What is ISDN?

A growing Public Telecommunication Network providing end-to-end digital connectivity designed to integrate different services such as voice, image and data in a single infrastructure.
ISDN can be thought of as an alternative to the existing public switched telephone network (PSTN). However, ISDN provides better quality.
You can achieve MORE in LESS TIME and it COSTS far LESS.

It is easy to use.

You get INSTANT CALL CONNECTION, PERFECT CLARITY, RELIABILITY and SPEED.

It is based on DIGITAL TECHNOLOGY and provides a very low BER (Bit Error Rate).

With ISDN you achieve high quality, enhanced reliability, high efficiency, high integration and high speed with transmission speed of 64 Kbps. You achieve more in less time, minimising your transmission costs as you pay normal call charges on ISDN. All this is available on existing copper lines. One ISDN line can deliver 2 digital exchange lines of 64 Kbps, each.

In the developed world, 90% of business is within the reach of ISDN. It is the Global Standard for high speed voice, data and video communications. ISDN also equips you for faster Internet surfing, G4 faxes and more. ISDN is an intelligent means of communication. It powers your business, and will change the way you work. Yes, the future has arrived. Sri Lanka Telecom now offers you ISDN Services - giving a global advantage none can match.

Training
Short training sessions for ISDN customers are conducted by our ISDN experts. Periodic training workshops will also be held for corporate customers.

Click here to visit the home of ISDN products online

What are the Services available on ISDN?

Fast file transfer
ISDN will revolutionise the way you work. The businessman on the move will be a thing of the past. You don't need to courier or post text, photographs, drawings, video clips, etc. With ISDN this can be done between computers in seconds.

One does not have to physically carry information from one point to the other. Your computers can now exchange vital files and data across the Globe in an instant. ISDN - Data interchange is made within seconds instead of hours waiting at a normal dial-up connection terminal.

Fast internet access
You can search and download information from the Internet at twice the speed of the fastest analogue modem and save time and money on searching and downloading. The Internet is the globe's largest network. With the development of Internet and web based business and commerce (also called e-commerce) fast Internet access is a necessity and not a luxury. With SLT ISDN, your throughput can be as much as 128 Kbps instead of the usual 33.6 Kbps. Apart from web surfing at blinding speeds, website hosting and e-commerce is not only viable with ISDN, but also offers opportunities for developing and using active multi-media content.

Video conferencing
You can use ISDN to hold face to face meetings with people around the world, discuss and amend documents, images in real time without having to move from your desk. If you are a supplier or a manufacturer, ISDN will change the way you work in order to meet the urgent deadlines. Instead of sending or receiving designs or samples by post or expensive courier services you could transmit them through ISDN lines in minutes for a pittance. Moreover you could talk to your supplier or your customers face to face without having to travel thousands of miles. In fact, you could either see or show the product. Issues could be discussed and resolved using the ISDN - Video Conference facility.

Remote network access
You can work as efficiently from your home too. You need not be confined to your office. With ISDN you can access information held on your network and use the same applications.

Remote video surveillance
You can receive clear pictures much faster with the use of ISDN. Imagine a control centre tracking a regional stores network. As ISDN makes use of two channels for voice and image simultaneously, warning could be issued immediately for the safety of the control centre.

Network connectivity
With ISDN, you can combine two local area networks as one can allow data flow within these networks.

E-mail
Transference of memos, letters, invoices, statements.

Call line identification
Displays the number of the person who calls you before you answer a call and throughout the call.

G4 faxes
Faxing becomes 7 times faster with ISDN. If an A4 size page takes 10 seconds to fax under normal circumstances, with ISDN it takes only 1.5 seconds. Best of all you'll receive high resolution faxes like never before: a deadline plus for the fine detail commonly found in industries such as designing, publishing and advertising.

What are the Areas, currently ISDN available?

Service areas of ISDN

Colombo (Central) Maradana Maharagama Hambantota Kollupitiya Slave Island Homagama Ratmalana Mattakkuliya Havelock Town Moratuwa Biyagama Katunayake Kotte Boralesgamuwa Malwana Mount Lavinia Nugegoda Piliyandala Hokandara

ISDN services will be available in Kalutara and Kandy, in the near future.


Can I visit and experience a demonstration before subscribe to a ISDN service?
Yes, you can. Our Demonstration of ISDN services are available at following SLT Teleshops:
Slave Island, Kotte, Ratmalana, World Trade Center, Katunayake, Nugegoda.

What are the countries ISDN connected with?
 UK, India, Hong Kong, USA, Singapore, Japan


How to select the equipment (Equipment selection chart)?

	Analogue Telephone	Digital Telephone	Video Telephone	Video Conferencing	Email & Internet	Fast Facsimile
TA
NT1
NT1+
S-Bus 4-6 Way
Analogue Phone
Digital Phone
Video Phone
PCI Interface Card
PCMC (External)
Mini VC
G4 Fax

Minimum Requirement      Optional

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