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There are two types of digital lines, ISDN2e and ISDN30e. The main differences are based on the number of lines that are required. ISDN2e comes in pairs of lines while ISDN30e comes in fibre cable with a min of 8 lines/channels and a max of 30 lines/channels on each connection.
What are the benefits of ISDN digital lines over traditional analogue exchange lines?
There are many, some examples are :-
- Route all your lines through the telephone system, including fax machines, direct lines and modems. This would reduce the number of lines that are rented and enable all calls to be routed over the Least Cost Route. (See Least Cost Routing section)
- Each handset/ device will have its own unique direct telephone number (DDI)
meaning callers can ring their contact in an organisation directly without having to waste an operators time routing regular callers around the system.
- On the display of the handset the incoming telephone number or name of the
caller would appear before being answered (just like on a mobile phone).
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