Find out how ISDN2e works, how to get started, what equipment you’ll need and learn about the features and benefits of ISDN2e.

This is terminated at the customers premises with a BT Line Box (NT1) which is the ISDN equivalent of the standard telephone interface. There are two variants of the Line Box, the NTE6C and the newer NTE8, both provide two RJ45 sockets for connecting to the line.

ISDN2e is BT's high-performance voice and data service for small offices. With a basic installation you can connect up to eight digital devices and make two calls at once. ISDN also offers 64/128k internet access - useful if broadband hasn't yet reached your exchange.

This document is a guide to the installation procedure for the BT ISDN2e NTE8D. 2. Suitable for intemal use, at ambient temperatures between -5 °C and +40 °C. Two S/T interf ace RJ45 type customer sockets wired in parallel. An In/Out switch for the S-Bus terminating resistors.

Find out how ISDN2e works and look at the user guides for ISDN and ISDN Connect. Learn more about the differences between point-to-point and point-to-multipoint configuration and about the features and benefits you get with ISDN2e.

By the end of 2025 the UKs analogue network (PSTN Lines, ISDN2e, ISDN30e will be switched off. This means the BT’s copper network will no longer be in use. We are moving to a digital IP network and if you have not already looked at moving to a VOIP solution for your business telephone connectivity now is the time to do so.

Example S-BUS Connections using an ISDN Basic Access Tester, Digital CPE Simulator, laptop or similar device. Use the tester to confirm “Power Source 1 restricted”.

If your business needs between 2 and 8 voice lines, then ISDN2e is what you need, Note, if you need 8 lines or more, ISDN30 is a better option. Please see ISDN30 for more detail. ISDN2e can be installed by BT or any other reseller of network services. ISDN2e is …

switch settings. All extension wiring MUST have a Type 2 socket (which incorporates terminating resistors), a Further S-Bus wiring details can be found in BS EN 50098-1.

Two simultaneous phone calls can be made (or more on primary rate), using the same pair of wires that your POTS telephone used to connect to. This is achieved by interleaving the data for each call, a technique called “time division multiplexing” (TDM).