ISDN2 Digital Telephone Line

Integrated Service Digital Network (ISDN)

If your business needs between 2 and 8 voice lines, then ISDN2 is what you need, if you need 8 lines or more then ISDN30 is a better option.

ISDN2 is installed in pairs of channels. An ISDN2 line refers to a pair of channels. An ISDN2 line (2 channels) is also sometimes referred to as an ISDN2 circuit. Confusing isn't it……..?

Each ISDN2 line (circuit) therefore provides 2 speech channels. If your business or organisation requires 4 simultaneous speech paths, you would need two ISDN2 lines/circuits providing four channels. If you required 6 simultaneous speech paths, then you would need three ISDN2 lines/circuits providing 6 channels and so on.

The most popular and useful ISDN2 features used by most businesses are as follows:

Caller ID - this will provide you with the incoming caller's number (as long as the caller is not with holding their number).
'DDI's - This stands for 'Direct Dial Inwards'. This allows your business to allocate different published numbers for different handset users, different groups, departments and so on. You can also allocate DDI numbers for marketing purposes. For example you may decide to publish a specific DDI number on Yell so that you can tell a caller is calling from Yell's web site - the options here can obviously be expanded to suit you. DDI's are available in multiples of 10.
Call diversion or trunk to trunk transfer. Using ISDN2 lines connected to your phone system you can divert calls to external numbers seamlessly. I.e. a call comes into the office on channel 1 and is then routed out of the office to an external number (a mobile?) on channel 2. This is great if external staff need to be contacted or you need to reroute calls externally when the office is not manned

Why use us for Voice

Pay substantially less on line rental & call costs compared to BT & other providers
We'll manage BT for you
You are still using the BT infrastructure
A BT Openreach engineer will install the lines
Deal with UK based professional friendly staff
Receive one bill for calls and line rental
Fully trained telecoms professionals