Trinidad and Tobago Computer Society

Author: ttcsadmin

  • Draft Policy on Cable Television Networks and Services

    Draft Policy on Cable Television Networks and Services

    This draft policy was released by the Telecommmunications Authority of Trinidad and Tobago (TATT) in December 2004. The deadline for comments on this policy was December 31st, 2004. The Trinidad and Tobago Computer Society (TTCS) obtained this paper document and scanned and converted it to a PDF in late December 2004.

    In January 2005, the TATT website came online and has made available the policy.

    Read TTCS comments on the

  • Draft Policy on Micro, Small and Medium-sized International Public Telecommunications Services and/or Networks

    Draft Policy on Micro, Small and Medium-sized International Public Telecommunications Services and/or Networks

    thumbnail-comments-on-iptsn

    This draft policy was released by the Telecommunications Authority of Trinidad and Tobago (TATT) in December 2004. The deadline for comments on this policy was December 31st, 2004. The Trinidad and Tobago Computer Society (TTCS) had obtained these paper documents and scanned and converted it into a PDF in late December 2004.

    In January 2005, the TATT website came online and has made available these draft policies for download.

    Read TTCS comments :

     

     

  • Draft National Policy on Data Protection (2004)

    The Draft National Policy on Data Protection was released for comment in November 2004 by the Ministry of Public Administration and Information (MPAI). According to the text,

    The Data Protection Policy applies to all personal information collected, used or disclosed by private sector and public sector organizations in the course of commercial or government related activity. Key among the Data Protection Policy provisions are:

      organizations are required to seek the consent of individuals prior to collecting, using or disclosing their personal information;

    • organizations must protect personal information with security safeguards appropriate to the sensitivity of the information; and
    • individuals may access personal information about themselves held by an organization and have it corrected, if necessary.

    This Data Protection Policy is based on the North American Model and meant to be compliant with rigorous standards for the protection of personal data as outlined in the European Union’s Data Protection Directive and takes into consideration the objectives of fastforward while focusing on the need to be compliant with the target market laws on which we are focused including compliance with the US HIPAA Act.

  • Draft National Policy on Electronic Transactions (2004)

    Draft National Policy on Electronic Transactions (2004)

    The Draft National Policy on Electronic Transactions was released for comment in November 2004 by the Ministry of Public Administration and Information (MPAI). According to the text:

    “This document provides the principles that will guide the policy for completion of The Electronic Transactions Bill….The main purpose of the Electronic Transactions Policy is to provide the legal framework for electronic transactions. This framework seeks to provide the legal principles to regulate the use of electronic documents and electronic signatures. The Policy provides the legal requirements governing records to be prepared in an electronic form and sets out the basic rule that an electronic record is not subject to legal challenge merely because it is in electronic form.
    The Policy recognizes that a legally binding document can be crated by use of an electronic signature. The Policy also provides for the formation of contract electronically and communication of electronic records. The Government is empowered under to make regulations relating to the use, import and export of
    encryption programs and other encryption products, and with respect to the protection of personal data. Furthermore, the Policy also makes provision for intermediaries and ecommerce service providers, and for the establishment of an Advisory Board to advise Government on the execution of this policy.”

    Download the Draft National Policy on Electronic Transactions  (PDF ; 15 pages ; size: 156K)

    Read the TTCS comments on the Data National Policy on Electronic Transactions  (TXT : 8K)

     

     

  • Windows XP Service Pack 2

    Windows XP Service Pack 2

    Windows XP Service Pack 2 (SP2) was released on August 6th 2004 and it is the largest update to Windows XP since the original release of Windows XP. SP2 is not immediately available (at this time: August 2004) for download from www.windowsupdate.com therefore users will have to download and install the “full” (also called the “Network Install”) of Windows XP Service Pack 2.

    It is available from Microsoft at this URL:

    http://download.microsoft.com/download/1/6/5/165b076b-aaa9-443d-84f0-73cf11fdcdf8/WindowsXP-KB835935-SP2-ENU.exe

    This link is for the English version. The file size is approximately 266 MB.

    (more…)
  • Slipstreaming with Windows XP Service Pack 2

    Slipstreaming with Windows XP Service Pack 2

    Slipstreaming is the term used to describe the integration of a service pack with the installation files from the original installation media. In this example, Windows XP Service Pack 2 will be integrated with the original files from Windows XP Home Edition.

    (more…)
  • Remove the XP Service Pack 2 Security Alert icon

    Remove the XP Service Pack 2 Security Alert icon

    Introduction

    Updated : January 12th, 2005

    Windows XP Service Pack 2 installs a brand new “Security Center” for users to protect their computers against a variety of security risks.

    Windows XP SP2 Security Center
    (more…)
  • Tech Specs for Trinidad & Tobago

    Tech Specs for Trinidad & Tobago

    Tech Specs for Trinidad and Tobago

    Created : July 7th, 2004

    Introduction

    This page provides information about some of the basic technical specifications and standards in use in Trinidad and Tobago. Will you be visiting Trinidad and Tobago in the near future? Will you be bringing your electronic devices (e.g. digital camera, cellphone, PDA, laptop computer, MP3 player, etc) with you? This page is for you.

    Electricity

    In Trinidad and Tobago, electricity is distributed by the Trinidad & Tobago Electricity Commission (T&TEC). Their official website is located at: http://www.ttec.co.tt/. According to their website, electricity is supplied:

    • at a frequency of 60 Hertz (60Hz).
    • the typical residential supply is AC, 115/230 Volt, single phase, 3 wire.

    For most purposes, the electrical outlets available to the typical visitor (at hotels, guest houses, homes of relatives/friends, etc) will supply 115V/60Hz electricity.

    Notes:

    • The electrical voltage can vary in the range 110V to 120V depending on time of day, load conditions, demand, etc.
    • Your electrical device should be able to operate in the 110V to 120V range.

    Types of electrical plugs:

    • Flat blade attachment plug
    • Flat blades with round grounding pin

    Telephones (land lines)

    Land line service in Trinidad and Tobago is provided by Telecommunications Services of Trinidad and Tobago (TSTT). Their webiste is located at: http://www.tstt.co.tt. TSTT uses standards similar to those of North America:

    • Telephone outlets use the RJ-11 socket.
    • Phones, fax machines, answering machines, modems, etc. are connected to the outlet via a RJ-11 modular plug.

    Cellular telephones

    The local phone company, Telecommunications Services of Trinidad and Tobago, (TSTT) offers both TDMA and GSM cellular service. Reminder: Check with your cellular service provider for information about roaming rates, compatibility, etc.) before bringing your cellular phone to Trinidad and Tobago.

    Further information about the GSM service can be found on our GSM in TnT page.

    Television/video standards

    Trinidad and Tobago uses the North American standard for television broadcasting.

    • Television/video standard: NTSC.
    • Number of lines: 525.
    • Frequency: 60Hz.

    NTSC to PAL and PAL to NTSC conversions are available from local video production companies (check the local telephone directory for contact information) but can be expensive for the average visitor.

    Internet Access

    Dial-up access is still the most common with “broadband” available in limited areas. For general information check this page: Internet Access Options in TnT

    As a visitor, you have several options by which you can access the Internet:

    Hotels

    The major hotels offer access in one form or the other:

    • The access can be directly from your room via a Ethernet cable or WiFi.
    • It may also be from a specially designated “computer room” where the hotel already has computers set and ready to access the Internet
    • It may also be from a specially designated “computer room” where you can plug your portable computer into a telephone jack or ethernet port.

    Cybercafes

    There are many cybercafes locate throughout the country, check the local telephone directory for contact information. Quality of service, speed and available equipment/applications varies from cafe to cafe.

    Dial-up access

    One local ISP, Opus Networx offers a “visitor account” for the duration of your stay. Check the website: http://www.opusnetworx.co.tt for further details.

    619-EASY

    The local phone company (TSTT) offers Internet access service without the need to sign-up for an account. Simply configure your computer to dial 619-easy (3279) and use the username EASY (use all capital letters because it is case-sensitive). There is no password. The call will cost TT 75 cents per minute (VAT inclusive) and will be billed to the phone number from which the call was made. e.g. if you make the call from telephone number 611-0001 and spend 10 minutes online, then the charge of (0.75 x 10) TT$7.50 for Internet access time will be added to the bill for phone number 611-0001. Please do not abuse the facility and leave your relatives or friends with large phone bills for Internet access time.

    Freenets

    There are no “freenet”-style 80211.b, 80211.g or other such public access wireless (“WiFi”) networks currently in operation (July 2004).

    Computer Hardware

    Hardware for PC desktop systems e.g. RAM modules, motherboards, keyboards, mice, network cards, hard drives, floppy drives, video cards, cases, cables, etc are available “off-the-shelf” from local retailers.

    Hardware for Macs is not so common. However, modern desktop Macs do use some components that are common to both Macs and PCs so, to a certain, limited extent, hardware is available.

    Internal hardware for laptops (PCs and Macs) is rare. These machines use proprietary form factor parts which will not be available “off-the-shelf”.

    Reminder: If you are traveling with your various electronic devices (e.g. laptop computer, PDA, digital camera, MP3 player, etc) bring: your AC adapter, spare batteries and your battery charger if possible/where applicable.

    Measurement Systems

    Trinidad and Tobago uses the Metric system for measurement:

    • Length: millimetres, centimetres, metres, kilometres.
    • Liquids: litres.
    • Weight: grams, kilograms.
    • Speed: kilometres per hour (Km/h).

    However, as a former british colony, it is not uncommon for citizens to refer to these measurements in their imperial formats, e.g. “pounds”, “miles”, “feet”, “inches”, etc. Note: the Metric system should be used for all business transactions.

    Batteries

    • Carbon and alkaline batteries are commonly available in the following formats: AAA, AA, C, D.
    • “Button” batteries, such as those used in watches and calculators are available.
    • Rechargable batteries and those with exotic contents e.g. lithium are less common.

    If your electronic equipment (e.g. laptop, digital camera, MP3 player, PDA) uses a battery with a proprietary form factor, it is unlikely you will be able to purchase a replacement “off-the-shelf”.

    Reminder: travel with spare batteries and your battery charger if possible/where applicable.

    Recordable Media

    Recordable Media is available in the following formats:

    • VHS standard video tape: 120 and 160 minutes (as measured in SP recording mode). (As of 2013, this is no longer considered a common medium)
    • Compact cassettes (As of 2013, this is no longer considered a common medium).
    • CD-R(ecordable): 650MB and 700MB are common.
    • CD-R specifically for audio is also available (but more expensive than “data” CD-Rs).
    • CR-RW (CD-rewritable) is available.
    • Recordable 4.7GB DVDs are available. Formats include: DVD-R, DVD-RW, DVD+R, DVD+RW.

    Local Radio Stations

    Local radio stations use the North American standard for frequency allocation:

    • The AM band uses 540 Khz to 1600Khz.
    • The FM band uses 88Mhz to 108Mhz.

    There are two AM stations: 610 (state owned/operated) and 730 (privately owned/operated).

    There are fifteen FM stations: 90.1, 92, 93, 94.1, 95.1, 96.1,
    97, 98.1, 100, 101, 102, 103, 104, 105, 106.

    Programming content includes: news, community announcements, local music, caribbean music, east-indian music, foreign pop music, hip-hop, talk radio, religious music and talk, easy listening and “golden-oldies”.

    Local Television Stations

    The 4 local television stations use the North American standard for frequency allocation:

    • Trinidad and Tobago Televsion (TTT): state owned/operated. VHF Channel 2 (in Trinidad) and VHF channel 13 (some parts of northern Trinindad and all of Tobago)
    • The Information Channel (TIC): state owned/operated. VFH Channel 4 (in Trinidad) and VHF channel 16 (some parts of northern Trinidad and all of Tobago)
    • CCN-TV6: privately owned/operated. VHF Channel 6 (in Trinidad), UHF channel 18 (some parts of northern Trinindad and all of Tobago), UHF channel 19 (only in Tobago).
    • Gayelle TV: privately owned/operated. UHF Channel 23. This is a “community” channel located in north western Trinidad. Other parts of the Trinidad and and all of Tobago may not receive this broadcast signal.

    These stations operate “over the air” on standard VHF and UHF broadcast frequencies. They are also available (unscrambled) on the local cable television system (CCTT) in Trinidad: TTT can be found on channel 3, TIC can be found on channel 4, TV6 can be found on channel 5, Gayelle on channel 7.

    Contact the creator of this page

    Before you send that email, remember:

    We can only answer questions involving Trinidad and Tobago. Do not email us with questions about other countries. We may not be able to answer your question(s).

    Information on this page is subject to change without further notice. We may not reply if your question has already been answered by material provided on this page. This page is for information purposes only. It is not an endorsement of the services provided by any entity linked to or mentioned on this page. You are solely responsible for any and all: financial loss, damage to your equipment or loss of data that may result directly or indirectly from the use of information contained on this page.

    If you have questions (that have not already been answered on this page), comments, more information to add to this page, etc, please contact us

    Last updated : 05/july/2004

    DISCLAIMER

    The creator(s) of this page and the TTCS are not affiliated with any entity linked to or mentioned on this page. This page has not been endorsed in any way by these entities. Information on this page is subject to change without further notice. If you use any information from this page, you do so at your own discretion and risk and you are solely responsible for any and all: financial loss, damage to your equipment or loss of data that may result directly or indirectly from such use. In other words, if you screw-up, or your equipment or data gets screwed up, it is 100% YOUR fault! Don’t blame anyone else

  • The IEEE 1394 Standard

    The IEEE 1394 Standard

    The IEEE 1394 Standard was originally created as a replacement for the SCSI interface. Three versions of the IEEE 1394 Standard have been approved by the Institute of Electrical and Electronics Engineers (IEEE):

    • 1394-1995:The original concept for a high-speed serial interface was conceived by Apple and the final Standard, 1394-1995, is based on Apple developed technology. The interface has the following capabilities:
      • Data transfer rates of up to 400 Mbps.
      • Bi-directional transfers.
      • High speed data transfer.
      • “Hot plug” connectivity (equipment using the interface can be connected and disconnected while the computer is powered on).
      • Digital interface.
      • A maximum cable length of 4.5 metres.
    • 1394a:Was finalised/adopted in 2000. It provided specifications for enhanced performance and power management on the FireWire bus.
    • 1394b:Was finalised/adopted in 2002. It supports a theoretical maximum speed of up to 3.2 Gbps at distances of up to 100 metres. It allows new types of media to be used for FireWire connections (e.g. fibre optic cabling).

    IEEE 1394a supports the following speeds:

    • 100 Mbps (S100)
    • 200 Mbps (S200)
    • 400 Mbps (S400)

    IEEE 1394b supports a maximum speed of 800 megabits per second and is backward compatible with 1394a.

    A maximum of 63 devices can be connected to one IEEE 1394 bus. The maximum number of bus-powered devices depends on the amount of power required by each device and the amount of power that can be provided by the computer.

    Most IEEE 1394 equipment and interface ports support IEEE 1394a. At this time, IEEE 1394b is most commonly found on products from Apple.

    IEEE 1394a is also known by the brand names “Firewire 400” and (to a lesser extent) “i.LINK”. IEEE 1394b is also known by the brand name “FireWire 800”.

    Cables and interface

    IEEE 1394 enables one cable to simultaneously carry digital video signals, digital audio signals, computer data and control signals. Cables are available in a variety of lengths. There are three types of connectors/ports:

    • 6-pin (Firewire 400. Can act as a power source for peripheral devices).
    • 4-pin (Firewire 400. Does not provide power to peripheral devices).
    • 9-pin (Firewire 800. Can act as a power source for peripheral devices).

    Cables can have different combinations of connectors:

    • 6-pin to 6-pin.
    • 6-pin to 4-pin.
    • 4-pin to 4-pin.
    • 9-pin to 9-pin.
    • 9-pin to 6-pin.
    • 9-pin to 4-pin.
    • Adapters are available to “downsize” a 6-pin connector to a 4-pin connector.
    • FireWire 400 devices/ports use either a 6-pin or 4-pin connector.
    • FireWire 800 uses the 9-pin connector and 9-pin port.
    • FireWire 400 products require an adapter cable in order to be used on a FireWire 800 port.
    • A FireWire 400 device can be plugged into either type of port (400 or 800) once it uses the appropriate connector.
    • FireWire 800 speeds can only be achieved if the FireWire 800 device is connected to a FireWire 800 port.

    Bus power:

    IEEE 1394 has been designed to allow devices to be powered through the IEEE 1394 cable (e.g. FireWire 800 can provide up to 45 watts, with a maximum of 1.5 amps and 30 volts). Devices receive power only when they actually need it. One of the best examples of such a device is the Apple iPod digital music player: “FireWire” is the sole data and power connection. The iPod recharges its built-in battery while downloading music from the computer.

    4-pin IEEE 1394 connectors/ports do not carry power therefore devices (which have those ports/are connected to such ports) will not receive power from the IEEE 1394 bus. They must be powered separately.

    Applications

    The most popular application of IEEE 1394 is as a data transfer interface for audio/visual (A/V) equipment and desktop and portable computers. Examples of that interface include connecting:

    • A/V devices to prosumer/professional editing equipment.
    • high resolution scanners to desktop and portable computers.
    • high speed optical drives (CD/DVD “burners”, DVD players) to desktop and portable computers.
    • external hard drives to desktop and portable computers.
    • consumer-level video cameras to desktop and portable computers.

    Firewire and i.LINK

    The IEEE 1394 Standard is sometimes refered to as “Firewire” and (to a lesser extent) “i.LINK” but this misleading because these terms (“Firewire” and “i.LINK”) are actually brand/marketing names and trademarks, not the actual Standard.

    “Firewire” is Apple’s brand/marketing name for IEEE 1394 and related technologies. “i.LINK” is Sony’s brand/marketing name for IEEE 1394 and related technologies. Vendors and manufacturers who wish to use these names and logos to promote their own products must enter into a licensing agreement with either company. Strictly speaking, hardware and software should be advertised as IEEE 1394 (a or b) compliant/compatible rather than “Firewire” or “i.LINK” compliant/compatible.

    According to Apple’s website:

    The FireWire Logo is an Apple trademark and must be licensed for use by third-parties. There is currently no licensing fee. The agreement is a 5-page Adobe Acrobat file, and contains all the information and guidelines third-party developers need to license the FireWire Logo for use on product packaging, advertising, and other product marketing materials.

    For the non-technical consumer: IEEE 1394, “Firewire” and “i.LINK” are compliant/compatible with one another because they are the same Standard. That is, an “i.LINK” device would work if plugged into a “Firewire” port and vice-versa.

    When purchasing IEEE 1394 equipment be aware of the following:

    • IEEE 1394, “Firewire” and “i.LINK” are the same Standard.
    • You may have to pay more if there is a (“Firewire” and “i.LINK”) brand name.
    • “Mac” devices can be used with a “PC” and vice-versa. However, be alert for device-driver issues.
    • Cables can be used interchangebly with Macs and PCs as long as they have the appropriate connectors.
    • Manufacturers may not explicitly state their device is “Firewire” or “i.LINK” compatible in order to avoid licensing agreements with Apple and Sony. If it is IEEE 1394 compliant/compatible, it should work.

    Trivia: Most people refer to IEEE 1394 as “Firewire” for many reasons:

    • IEEE 1394 sounds “too technical”.
    • “Firewire” is more “user-friendly” (sounds “better” than either “IEEE 1394” and “i.LINK).
    • End users find it easier to remember the term “Firewire”.
    • Apple has been better at marketing the “Firewire” brand name than Sony has with “i.LINK”.

    Disclaimer

    Information on this page is subject to change without further notice. If you use any information from this page, you do so at your own discretion and risk and you are solely responsible for any and all: financial loss, damage to your equipment or loss of data that may result directly or indirectly from such use. In other words, if you screw-up, or your equipment or data gets screwed up, it is 100 percent YOUR fault! Don’t blame anyone else.

  • GSM in TnT | [05-jul-2004]

    GSM in TnT | [05-jul-2004]

    GSM in TnT

    updated : 05 July 2004

    Introduction

    This page is about the GSM cellular telephone service offered by TSTT to citizens of Trinidad and Tobago.

    GSM is the: Global System for Mobile Communications. It is a next generation telecommunications service that offers capabilities beyond the traditional voice and text of exisiting cellular services. TSTT is marketing the service under the brand name: “mpower”.

    Note: the Trinidad and Tobago Computer Society (TTCS) is unable to answer questions about services in other countries.

    What are the features of GSM?]

    GSM offers the same features as the existing TDMA system :

    • Voice calls
    • Call waiting
    • Call hold
    • Call forwarding
    • Caller ID
    • SMS (short messaging service)
    • Per second billing (TSTT will not round the call time up to the nearest minute).
    • Voice Mail (a fee will be applied for playing-back recorded messages while roaming).

    In addition to these features:

    • “Call barring of incoming calls while roaming” (block incoming calls while roaming).
    • Ability to roam, that is, use GSM networks outside of Trinidad and Tobago. See this section of the FAQ (Frequently Asked Questions) section for more information about roaming.
    • Data Services
      The original GSM specification has a data transfer rate of 9.6K. Technologies such as GPRS (general packet radio service) have increased those transfer rates to allow users to browse the Internet, send/receive e-mail. In the near future, users will also be able to take advantage of multimedia services such as streaming audio and video.
    • WAP Internet access. (not available from TSTT at this time)

    Data Services, including Internet access, are currently under trial and have not been officially launched at this time (early July 2004). The Services should be launched towards the end of July 2004. Further information about data services can be found at this link.

    Where can I roam with my TSTT-based GSM phone?

    The ability to roam with a TSTT-based GSM phone is dependant upon these factors:

    • The GSM frequencies supported by your phone. The TSTT system uses 1800MHz (1.8GHz). If you travel frequently to different areas of the globe then a tri-band phone would be a better investment. See the FAQ (Frequently Asked Questions) section for more information about tri-band phones.
    • Whether or not TSTT has a roaming agreement with the network operator that provides GSM service in the area where you wish to roam. The roaming agreement provides for user authentication, billing procedures and service charges. See the FAQ (Frequently Asked Questions) section for more information about roaming.

    Reminder: roaming with a cellular phone (either TDMA or GSM) is expensive.

    List of countries where TSTT customers have GSM or TDMA roaming capability. More countries will be added to this list as information becomes available:

    This table is based on TSTT advertisements in the Guardian newspaper (Monday 13 October 2003, pages 36 and 37) and (Thursday 12 February 2004, page 79).

    Where can I roam with my TSTT-based GSM phone?

    The ability to roam with a TSTT-based GSM phone is dependant upon these factors:

    • The GSM frequencies supported by your phone. The TSTT system uses 1800MHz (1.8GHz). If you travel frequently to different areas of the globe then a tri-band phone would be a better investment. See the FAQ (Frequently Asked Questions) section for more information about tri-band phones.
    • Whether or not TSTT has a roaming agreement with the network operator that provides GSM service in the area where you wish to roam. The roaming agreement provides for user authentication, billing procedures and service charges. See the FAQ (Frequently Asked Questions) section for more information about roaming.

    Reminder: roaming with a cellular phone (either TDMA or GSM) is expensive.

    List of countries where TSTT customers have GSM or TDMA roaming capability. More countries will be added to this list as information becomes available:

    • This table is based on TSTT advertisments in the Guardian newspaper (Monday 13 October 2003, pages 36 and 37) and (Thursday 12 February 2004, page 79).
    Operator Available Service Technology/Frequency Rate (US$ per minute)
    Anguilla Cable & Wireless voice, voice mail TDMA
    Antigua APUA PCS voice, 2-way text, voice mail GSM 1900MHz $0.66
    Antigua Cable & Wireless voice, voice mail TDMA
    Aruba Digicel voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.55
    Australia Optus voice, 2-way text, voice mail GSM 900MHz $0.44
    Austria Connect Austria voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.68
    Austria AUTMM-T-Mobile voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.72 ($0.33 for SMS)
    Barbados Cable & Wireless voice, voice mail TDMA
    Barbados Digicell voice, 2-way text, voice mail GSM 900/1800/1900Mhz $0.55 ($0.36 for SMS)
    Belgium Base voice, 2-way text, voice mail GSM 1800MHz $0.77
    Belize BTL voice, 2-way text, voice mail GSM 1900MHz $1.43
    Bermuda Telecom/AT&T voice, 2-way text, voice mail GSM 1900MHz $0.60
    Brazil1 TNL voice, 2-way text, voice mail GSM 1800MHz $0.92
    Brazil BTL voice, 2-way text, voice mail GSM 1800MHz $1.43
    Bulgaria Glo Bul voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.40
    Canada Microcell voice, 2-way text, voice mail GSM 1900MHz $0.69
    Canada Rogers voice, 2-way text, voice mail GSM 1900MHz $0.76
    Canada AT&T voice, voice mail TDMA $0.74
    Canada Cingular voice, voice mail TDMA $0.99
    Cayman Islands Cable & Wireless voice, voice mail TDMA
    Denmark Sonofon voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.58
    Denmark TDC Mobile voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.03
    Dominica Cable & Wireless voice, voice mail TDMA
    Dominican Republic Orange voice, 2-way text, voice mail GSM 1900MHz $0.46
    France Orange France voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.74
    France SFR voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.73
    Germany O2 voice, 2-way text, voice mail GSM 1800MHz $1.04
    Grenada Cable & Wireless voice, voice mail TDMA
    Grenada Digicel voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.55
    Guadeloupe Orange Caraibe voice, 2-way text, voice mail GSM 900MHz $0.61
    Guadeloupe Bouygues voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.91
    Hong Kong CSL voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.32
    Hong Kong Hutchison voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.30
    India Spice-Punjab voice, 2-way text, voice mail GSM 900MHz $1.44
    India Spice-Karanataka voice, 2-way text, voice mail GSM 900MHz $1.44
    Israel Cellcom voice, 2-way text, voice mail GSM 900MHz/1800MHz $1.36
    Israel Orange/Partner voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.70
    Italy Vodafone/Omnitel voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.39
    Italy TIM voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.52
    Jamaica Digicel voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.55
    Jamaica Cable & Wireless voice,voice mail TDMA
    Martinique Bouygues voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.91
    Martinique Orange Caraibe voice, 2-way text, voice mail GSM 900MHz $0.61
    Mauritius Emtel voice, 2-way text, voice mail GSM 900MHz $0.48
    Montserrat Cable & Wireless voice, voice mail TDMA
    Netherlands Ben/T-Mobile voice, voice mail GSM 1800MHz $0.50
    Republic of Panama Cable & Wireless voice, 2-way text, voice mail GSM 850MHz $0.76 ($0.22 for SMS)
    Portugal Vodafone voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.61
    Russia Beeline/KB Impuls voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.50
    South Africa MTN voice, 2-way text, voice mail GSM 900MHz $0.38
    Spain2 ESPRT-Amena voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.80 ($0.29 for SMS)
    Spain TME voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.82
    Spain Vodafone/Airtel Mobile SA voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.70
    St.Bathelemey Orange Caraibe voice, 2-way text, voice mail GSM 900MHz $0.61
    St.Kitts & Nevis Cable & Wireless voice, voice mail TDMA
    St.Lucia AT&T voice, 2-way text, voice mail GSM 1900MHz $0.61
    St.Lucia Digicel voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.55
    St.Lucia Cable & Wireless voice, voice mail TDMA
    St.Maarten Orange Caraibe voice, 2-way text, voice mail GSM 900MHz $0.61
    St.Maarten Bouygues voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.91
    St.Martin Orange Caraibe voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.61
    St.Vincent AT&T voice, 2-way text, voice mail GSM 1900MHz $0.61
    St.Vincent Digicel voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.55
    St.Vincent Cable & Wireless voice, voice mail TDMA
    Sweden Telia Mobile AB voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.63
    Switzerland Sunrise voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.72
    Taiwan Farestone voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.24
    Turks & Caicos Cable & Wireless voice, voice mail TDMA
    UK O2 voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.81
    UK Orange voice, 2-way text, voice mail GSM 1800MHz $0.32
    UK T-Mobile/One 2 One/DT Mobile voice, 2-way text, voice mail GSM 1800MHz $0.35
    UK Vodafone voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.20
    USA AT&T voice, 2-way text, voice mail GSM 1900MHz $1.09
    USA AT&T voice, voice mail TDMA $0.74
    USA Cingular voice, voice mail TDMA $0.99
    USA Cingular East voice, 2-way text, voice mail GSM 1900MHz $0.76
    USA Cingular West voice, 2-way text, voice mail GSM 1900MHz $0.76
    USA Verizon/Rogers AT&T voice, voice mail TDMA $0.99

    Important Notes:

    1 ALL calls terminated on the TNL Brazil network are charged a one time charge of US$0.54.

    2 ALL calls terminated on the ESPRT-Amena network are charged a set-up charge of US$0.17.

    • Rates are in US dollars and DO NOT include value added tax (VAT)and other taxes/tolls.
    • Rates are subject to change without further notice.
    • Charges apply to ALL calls made and received on the handset.
    • Prices/rates valid as of 09 February 2004.
    • Prices represent the per minute rate.
    • Toll and other charges are applied to all international calls made while roaming.
    • Toll charges are similar to those printed in the TSTT telephone directory.
    • Additional taxes maybe applied by the individual carriers.
    • TSTT’s GSM network operates on the 1800MHz (1.8GHz) frequency.

    Note to visitors from (USA/Canada/Europe/Asia/”foreign”): If your “home network” is based in one of these countries/with one of these cellular/network operators, then you may have “seamless” GSM roaming facilities in Trinidad and Tobago. As always, contact the cellular/network operator who currently provides you with GSM services for further information.

    New roaming agreements (countries) for TSTT customers

    Information in this section is based on a TSTT advertisment in the Guardian newspaper (Tuesday 22 June 2004, page 40).

    TSTT has expanded its roaming coverage by entering into agreements with the following cellular operators:

    Operator Available Service Technology/Frequency Airtime (US$ per minute) SMS (US$ per message)
    Curacao Telecom Curacao voice, 2-way text, voice mail GSM 900MHz/1900MHz $0.66 $0.40
    Dominica Orange Caraibe voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.78 $0.25
    Finland Finnet Networks voice, 2-way text, voice mail GSM 900MHz/1800MHz/3G $0.40 $0.19
    Greece Cosmote Mobile Tel voice, 2-way text, voice mail GSM 1800MHz $0.54 $0.20
    India BPL-Kerala voice, 2-way text, voice mail GSM 900MHz $1.82 $0.48
    India BPL-Maharashtra voice, 2-way text, voice mail GSM 900MHz $1.82 $0.48
    India BPL-Mumbai voice, 2-way text, voice mail GSM 900MHz $1.82 $0.48
    India BPL-Tamil Nadu voice, 2-way text, voice mail GSM 900MHz $1.82 $0.48
    Malta Go Mobile voice, 2-way text, voice mail GSM 1800MHz $0.62 $0.31
    Mexico Telcel voice, 2-way text, voice mail GSM 1900MHz $0.94 $0.39
    St. Maarten Telcell voice, 2-way text, voice mail GSM 900MHz $0.60 $0.17
    Suriname Telesur voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.90 $0.28
    Taiwan Chunghwa Telecom Mobile voice, 2-way text, voice mail GSM 900MHz/1800MHz $0.31 $0.17
    USA T-Mobile voice, 2-way text, voice mail GSM 1900MHz $0.69 $0.10

    Notes:

    • Prices are valid/effective as of Thursday 3rd June 2004.
    • Prices DO NOT include tolls and taxes.
    • TSTT customers who roam in these countries will be able to:
      • Make and receive voice calls.
      • Send text messages.
      • Retrieve TSTT voicemail.
    • Customers of these carriers will be able to use the same features when they roam in Trinidad and Tobago.

    Special roaming rates for TSTT/Cable and Wireless customers

    Information in this section is based on a TSTT advertisment in the Guardian newspaper (Wednesday 02 June 2004, page 6).

    TSTT customers roaming on any Cable and Wireless cellular network in the Caribbean will be able to use the following roaming rates:

    • Airtime: US 22 cents per minute.
    • SMS text: US 35 cents per message. Receiving is free.
    • These prices DO NOT include VAT.
    • These prices are applicable as of 29 April 2004.
    • Additional taxes and tolls may be added to the base price depending on location.

    These rates are effective only when roaming in the following countries:

    • Anguilla
    • Antigua & Barbuda
    • Barbados
    • Cayman Islands
    • Dominica
    • Grenada
    • Jamaica
    • Montserrat
    • St Kitts & Nevis
    • St. Lucia
    • St. Vincent
    • Turks and Caicos

    Notes:

    • TSTT customers roaming on other cellular networks will be billed according to this table.
    • These rates apply to both TDMA and GSM customers.

    New international rates

    Information in this section is based on a TSTT advertisment in Newsday (Tuesday 29 June 2004, page 24).

    TSTT has reduced the rates on international calls by fifty percent (50%) effective 29 June 2004. This rate reduction is applicable to mobile users and means that the discount offered on the 10-10-335 service will no longer be available.

    These new rates DO NOT APPLY to the following countries:

    • Anguilla
    • Antigua
    • Barbados
    • British Virgin Islands
    • Cuba
    • Dominica
    • French Guiana
    • Grenada
    • Guadeloupe
    • Guyana
    • Jamaica
    • Martinique
    • Monserrat
    • Nauru Island
    • Niue Island
    • Norfolk Island
    • Sao Tome
    • Solomon Islands
    • St. Bartholomew
    • St. Helena
    • St. Kitts/Nevis
    • St. Lucia
    • St. Vincent and the Grenadines
    • Turks and Caicos
    • Venezuala
    • Wallis and Fortuna
    • Callers to these countries will receive a forty percent (40%) discount after the first four (4) minutes.

    What are the rates for post-paid GSM service?

    Mpower post-paid plans:

    mpower 100 mpower 200 mpower 500 mpower 800 mpower 1500 mpower 2500 mpower unlimited mpower corporate mpower corporate employee
    Monthly access fee $161.00 $287.50 $517.50 $690.00 $1,150.00 $1,725.00 $5,750.00 $86.25 $92.00
    Included minutes 100 200 500 800 1500 2500 Unlimited Not applicable Not applicable
    Rollover minutes Included Included Included Included Included Included Not applicable Free calls Mon – Fri: 10pm – 6am Free calls Mon – Fri: 10pm – 6am
    Sunday calls 12 cents per minute 12 cents per minute 12 cents per minute 12 cents per minute 12 cents per minute 12 cents per minute Not applicable 12 cents per minute 12 cents per minute
    Lingo messages 25 25 25 50 75 100 Unlimited Not applicable Not applicable
    Additional minutes $1.30 $1.04 92 cents 81 cents 75 cents 63 cents Not applicable 63 cents 63 cents
    Additional lingo 25 cents 25 cents 25 cents 25 cents 25 cents 25 cents Not applicable 20 cents 20 cents
    • This table is based on a TSTT advertisment in the Guardian newspaper (Saturday 29 March 2003, pages 40 and 41).
    • All prices are in TT dollars and are VAT inclusive.
    • These rates apply only to calls made on the TSTT network (i.e. within Trinidad and Tobago).
    • Rates for a TSTT customer roaming abroad can be found here.
    • Post-paid customers get the following “value-added-services” at no additional cost: caller ID, call waiting, call forwarding,
      call barring (block incoming calls while roaming) and voice mail, roll-over minutes, 12 cents per minute on Sundays, per second billing.
    • Data services will incur separate, additional service charges.
    • A fee will be applied for playing-back recorded messages (voice mail messages) while roaming.
    • Note to visitors from (USA/Canada/Europe/Asia/”foreign”): These rates are for TSTT customers on the TSTT network. Your roaming charges will be different.

    TSTT has revised its post-paid mpower plans. The new plans will be effective from 1st August 2004. All prices are in TT dollars and are VAT inclusive. The following table is based on an official TSTT advertisment (Trinidad Guardian Wednesday 30th June page 6 and Express Wednesday 30th June page 47).

    mpower 75 mpower 150 mpower 300 mpower 600 mpower 1000 mpower 2000 mpower 3000 mpower unlimited mpower corporate mpower corporate employee
    Monthly access fee $89.00 $161.00 $287.50 $517.50 $690.00 $1,150.00 $1,725.00 $3,450.00 $86.25 $92.00
    Included minutes 75 150 300 600 1000 2000 3000 Unlimited 100 100
    Rollover minutes Included Included Included Included Included Included Included Not applicable Free calls Mon – Fri: 10pm – 6am Free calls Mon – Fri: 10pm – 6am
    Sunday calls 12 cents per minute 12 cents per minute 12 cents per minute 12 cents per minute 12 cents per minute 12 cents per minute 12 cents per minute Not applicable 12 cents per minute 12 cents per minute
    Lingo messages 25 25 25 25 50 75 100 Unlimited 25 25
    Additional minutes 99 cents 90 cents 80 cents 70 cents 60 cents 50 cents 40 cents Not applicable 40 cents 50 cents
    Additional lingo 25 cents 25 cents 25 cents 25 cents 25 cents 25 cents 25 cents Not applicable 20 cents 20 cents

    What are the rates for pre-paid GSM service?

    An official TSTT advertisment (Trinidad Guardian Friday 5th December 2003 page 39) states the following rates for pre-paid GSM service:

    • Peak rate: TT$1.99 per minute.
    • Off-peak rate: TT$0.99 per minute.
    • Sunday rate: TT$0.65 per minute.
    • To send TSTT Lingo (SMS) messages: TT$0.35 per message.

    TSTT has revised the rates for its mpower pre-paid GSM service. The new rates will be effective from 1st August 2004. All prices are in TT dollars and are VAT inclusive. The following information is based on an official TSTT advertisment (Trinidad Guardian Wednesday 30th June page 6 and Express Wednesday 30th June page 47).

    There are 2 packages for pre-paid customers: “just talk” and “talk ‘n lingo”:

    “just talk” rates:

    • Peak: TT$1.59 per minute.
    • Off peak: TT$0.79 per minute.

    “talk ‘n lingo” rates:

    • Peak: TT$1.79 per minute.
    • Off peak: TT$0.69 per minute.
    • Saturdays and holidays: TT$0.69 per minute.
    • Sundays TT$0.59 per minute.
    • Lingo: 50 “free” per month.

    Pre-paid cards (for both Liberty and Mpower pre-paid customers) are available in the following denominations: The rates are in TT dollars:

    This table is based on an official TSTT advertisment: Trinidad Guardian Monday 24th May 2004 page 22.

    Card Denomination Cost of card (VAT incl) Bonus Expiry Available in
    $10 $11.50 nil 30 days e-card only
    $15 $17.25 nil 30 days e-card and mobile prepaid card
    $25 $28.75 nil 60 days e-card only
    $50 $57.50 nil 120 days e-card and mobile prepaid card
    $100 $115.00 $10 120 days e-card and mobile prepaid card
    $200 $230.00 $50 150 days e-card only

    Mzone: description and rates

    Information in this section is based on an official TSTT advertisment in Newsday Wednesday 30th June 2004 page 20.

    TSTT will be marketing its GSM-based data services under the brand name mzone. The first mzone service will be Internet access via GPRS (general packet radio service). Users will have an always-on connection and will be able to use their mobile telephone (once it is capable of doing so) or GPRS-enabled device (e.g. a PDA) to:

    • access their email.
    • browse the WWW.
    • transfer files.
    • use instant messaging.

    Preliminary reports from users of the trial service indicate that access speeds are similar to those of dial-up Internet access via regular land-lines.

    Data services will be launched soon and TSTT has published the following introductory rates:

    • Introductory rates are valid from 22nd July 2004 to 31st August 2004.
    • Users who sign for these special rates will pay them until 31st March 2005.
    • Users will have to pay regular rates from 1st April 2005.
    mzone unlimited mzone 10 mzone 20 mzone basic
    Monthly access fee $99.99 $37.50 $75.00 $15.00
    mbytes included unlimited 10 20 0
    Additional kbytes Not applicable 3 cents 3 cents 3 cents

    REGULAR mzone rates (see following table) will be effective from 1st September 2004.

    mzone unlimited mzone 10 mzone 20 mzone basic
    Monthly access fee $149.99 $49.99 $99.99 $19.99
    mbytes included unlimited 10 20 0
    Additional kbytes Not applicable 3 cents 3 cents 3 cents

    Will existing (TDMA) cellular phones continue to work now that TSTT operates a GSM service?

    TSTT has stated that it will continue to maintain/support the existing (TDMA) cellular network. However, as of Monday 17th May 2004, TSTT no longer activates TDMA phones for post-paid (“Connect”) service but existing “Connect” customers will continue to receive service. TSTT will continue to activate pre-paid TDMA (“Liberty”) phones. If you want to be on a post-paid plan, you will now have to purchase a GSM phone and sign up for one of the GSM packages. See these sections for more information:

    Can my (USA/Canada/European/Asian/”foreign”) GSM cellular phone work on the TSTT GSM system?

    It should be able to work on the TSTT system as long as it can use the 1800Mhz frequency. However, the ability to use your “foreign”
    phone and the features available to you while in Trinidad and Tobago will be determined by the roaming agreement between TSTT and the network operator that services the
    area where you normally use your phone. The roaming agreement provides for user authentication, billing procedures and service charges.

    Contact the cellular/network operator who currently provides you with GSM services. This network operator is the entity responsible for making the roaming agreement and will be able to tell you:

    • Where (geographic location) you can roam with your phone. For example, if you can roam with your phone in Trinidad and Tobago.
    • If your phone/handset is compatible with those foreign systems.
    • Which network and/or card-enabled features will be available to you while you roam.
    • The rates for roaming.
    • The billing procedures for roaming.
    • If the roaming is “seamless” or “unregistered”. See the FAQ (Frequently Asked Questions) section for more information about roaming.

    What models/brands of cellular phones will work on TSTT’s GSM system?

    Any GSM cellular phone that can use the 1800Mhz frequency should be able to work on the TSTT system. However, you should check with TSTT before
    purchasing that “used”/”pre-owned” phone. If you decide to switch from TDMA to GSM, there are a variety (in terms of features and cost) of GSM phones available from the popular brands e.g. Motorola and Nokia. At the present time GSM handsets and service plans are more expensive than TDMA handsets and service plans in Trinidad and Tobago.

    TSTT is offering the following Nokia handsets with its various GSM service plans :

    • Nokia 2100
    • Nokia 3310
    • Nokia 3410
    • Nokia 3510
    • Nokia 5100
    • Nokia 5210
    • Nokia 6310i
    • Nokia 6510
    • Nokia 6610
    • Nokia 7210
    • Nokia 7650
    • Nokia 8310
    • Nokia Communicator 9210i

    Further details about the Nokia phones on this list can be found at the official Nokia website: http://www.nokiausa.com/.

    TSTT is offering the following Motorola handsets with its various GSM service plans:

    • Motorola A388
    • Motorola C332
    • Motorola C333
    • Motorola T190
    • Motorola V66i

    TSTT is offering the following Samsung handsets with its various GSM service plans:

    • Samsung A300
    • Samsung R220

    TSTT is offering the following Sony-Ericsson handsets with its various GSM service plans:

    • Sony-Ericsson T202
    • Sony-Ericsson T68i

    As always, contact TSTT for further information on cost, availability, different brands of phones, etc.

    Will TSTT provide Subscriber Identity Modules (SIMs) for the GSM phones?

    TSTT will provide Subscriber Identity Modules (SIMs) (See: What are SIMs?) for the phones that are bundled with its various GSM service plans. In general, SIMs will be issued with the purchase of a handset. You will be able to purchase additional SIMs without having to purchase a handset.

    SIM configuration: TSTT will provide the SIM configuration in order to identify TSTT specific customers as well as enable various services for the local network. See the What models/brands of cellular phones will work on TSTT’s GSM system? section for a list of GSM phones being provided by TSTT.

    Activating non-TSTT SIMs

    • TSTT has stated that it cannot activate a foreign SIM card.
    • TSTT has stated that its GSM services cannot be activated on SIMs from a foreign provider.

    About “locked” phones

    • Handsets sold by TSTT will be “SIM-locked” and therefore will only work with TSTT SIMs.
    • If you have a (new/used) GSM phone from (USA/Canada/Europe/Asia/”foreign”) and it is “SIM-locked” to a foreign operator’s network, that phone/handset will not work with TSTT SIM cards. See: What are SIMs? and What is “SIM lock”?.
    • Note to visitors from (USA/Canada/Europe/Asia/”foreign”): The SIM provided by YOUR network operator will continue to work in YOUR phone when you roam in Trinidad and Tobago. However, if your phone is “SIM-locked”, you will not be able to use a TSTT SIM card in that phone.
    • The creator(s) of this page cannot provide any sort of help/instructions on how to unlock “SIM-locked” or any other sort of “locked” GSM phones! Do not ask for such instructions.
    • The creator(s) of this page cannot provide any sort of help/instructions on how to unlock “locked” TDMA phones!

    I am from (USA/Canada/Europe/Asia/”foreign”) and I want to use my GSM cellular phone on the TSTT GSM system

    You must first contact the cellular/network operator who currently provides you with GSM services. The network operator will be able to provide you with the relevant details about roaming especially where (geographic location) you can roam with your phone. You can also consult the following sections on this page:

    I want to purchase my GSM cellular phone from (USA/Canada/Europe/Asia/”foreign”) and use it on the TSTT GSM system

    If you want to purchase a GSM cellular phone from (USA/Canada/Europe/Asia/”foreign”), it must meet these specifications:

    • It must be able to operate on the 1800MHz (1.8GHz) frequency.
    • It must not be “SIM-locked” to a foreign operator’s network. If the phone/handset is locked, it will not work with TSTT SIM cards. See: What are SIMs? and What is “SIM lock”?.

    Other factors to take into consideration:

    • Do not purchase SIMs from outside of Trinidad and Tobago for use on the TSTT GSM network. See: Activating non-TSTT SIMs.
    • If you travel frequently and wish to roam with your GSM phone then you may want to purchase a tri-band phone. See the FAQ (Frequently Asked Questions) section for more information about tri-band phones.
    • If you wish to use the GSM data services (e.g. GPRS), make sure the particular phone model has that capability.
    • Know what you are purchasing! Less expensive GSM phones tend to be limited to voice and text messaging and do not have data capability.
    • SIM-locked phones restrict you to a particular cellular network. Lock-free phones (that is, phones which are not SIM-locked at the factory) allow you to use any SIM from any GSM provider anywhere in the world.

    TSTT GSM network specifications

    • Operator Name: Telecommunications Services of Trinidad and Tobago Ltd
    • Network Name: TSTT
    • Network Type: GSM 1800
    • Handset Code: TSTT
    • Network Code: 374 12
    • Network Status: Operational

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    FAQ (Frequently Asked Questions)

    • What is dual band?
      Dual band refers to the ability of GSM network infrastructure and phones to operate across two frequency bands. For example at 900MHz and at 1800MHz.
    • What is a tri-band phone?
      A tri-band cellular phone has the ability to operate on the 3 different frequencies (depending on location) commonly used by GSM operators. These GSM frequencies are: 900MHz, 1800MHz and 1900MHz.
    • What is a dual mode phone?
      A dual mode cellular phone has the ability to operate in either analog or digital mode depending on network conditions. This description is exclusive to TDMA phones since the GSM system is one hundred percent digital. TSTT has discontinued analog TDMA service.
    • Can my existing (TDMA) cellular phone work on the TSTT GSM system?
      No, because TDMA cellular phones are incompatible with the GSM system.
    • What is GPRS?
      GPRS is the GSM Packet Radio Service. Packet switching utilises the network only when there is data to be sent as opposed to sending a continuous stream of data over a permanent connection. Users are able to send and receive data at speeds of up to (a theoretical maximum) of 115Kbit/s. GPRS enables users to connect to a wide range of public and private data networks which use standard data protocols such as TCP/IP and make use of applications such as email or Internet (WWW) access.
    • What are SIMs?
      What are “Smart” cards?
      Subscriber Identity Module (SIM) cards are used to provide individual identities for each mobile user: e.g. authentication and storage for user data and network configuration information. The current generation of SIMs (“Smart” cards) contain microchips which extend the “intelligence” and capability of the card. Users are now able to access a vast range of card-enabled (as opposed to network-enabled) applications. The SIM must be inserted in the phone for the user to make and receive calls.
    • What is “SIM lock”?
      “SIM lock” is the term used to describe the pre-programming of handsets by manufacturers to ensure that the handsets will only work with SIMs issued by a specific GSM network operator. For example: TSTT has stated that it will be selling SIM-locked phones. This means that if you try to use a non-TSTT SIM, the phone will not work.
    • What is “roaming”?
      Roaming is the ability for a cellular customer to make and receive voice calls, send and receive data, etc on “visited” networks, that is, GSM networks located outside the geographical coverage area of their home network. These “visited” networks can be accessed in the same manner as the home network. For example, a TSTT customer (with a GSM phone) is able to make and receive voice calls while travelling in Europe (an example of international/global roaming). There are 3 types of roaming:

      • National Roaming: The visited network is in the same country as the home network.
      • International Roaming or Global Roaming: The visited network is outside the home country.
      • Inter-standard roaming: The visited network operates on a different technical standard than the home network.
    • What is “seamless roaming”?
      Seamless roaming allows cellular customers to make and receive calls on “visited” networks, as long as there is a roaming agreement between the operator of the “visited” network and the operator of their “home” network.
    • What is “unregistered roaming”?
      Unregistered roaming allows cellular customers to make (originate) calls on “visited” networks where there are NO roaming agreements between the operator of the “visited” network and the operator of their “home” network. Calls are billed via one of these methods: Collect, Credit Card or Calling Card. Calls which originate via unregistered roaming are usually more expensive than calls which originate via seamless roaming. TSTT does not officially support unregistered roaming at this time (July 2004).
    • Where did you get all of this information? Do you work for TSTT?
      The creator(s) of this page and the TTCS are not affiliated with Telecommunications Services of Trinidad and Tobago (TSTT). All information on this page was gathered from public sources. No one invoved in the creation and maintainence of this page is employed by TSTT.
    • How long has this GSM page been online?
      This GSM page has been online since 20 October 2002.

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    How do I contact TSTT for more information?

    TSTT can be contacted about GSM service:

    • At any TSTT Customer Service Centre.
    • Via telephone number: 824-TSTT (8788).
    • At the official TSTT website: http://www.tstt.co.tt
    • You can also check the local telephone directory for general information about TSTT Mobile Services and contact information.

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    Contact the creator of this page

    Before you send that email, remember:

    • We can only answer questions involving services in Trinidad and Tobago
    • Do not email us about services/problems etc in other countries.
    • We may not be able to answer your question(s). No one invoved with this page is employed by/affiliated with TSTT.
    • Information on this page is subject to change without further notice.
    • The creator(s) of this page cannot provide any sort of help/instructions on how to unlock “SIM-locked” or any other sort of “locked” GSM or TDMA cellular phones!
    • We may not reply if your question has already been answered by material provided on this page.
    • This page is for information purposes only. It is not an endorsement of the services provided by TSTT.

    If you have questions (that have not already been answered on this page), comments, more information to add to this page, etc, please contact us at: ttcs@opus.co.tt

    Last updated : 05/july/2004

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    DISCLAIMER: The creator(s) of this page and the TTCS are not affiliated with Telecommunications Services of Trinidad and Tobago (TSTT). This page has not been endorsed in any way by TSTT. Information on this page is subject to change without further notice. If you use any information from this page, you do so at your own discretion and risk and you are solely responsible for any and all: financial loss, damage to your equipment or loss of data that may result directly or indirectly from such use. In other words, if you screw-up, or your equipment or data gets screwed up, it is 100% YOUR fault! Don’t blame anyone else.

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