Eicon Networks ISDN NT1 Dokumentacja Pobierz pdf (Strona 14)

As far as the interface to the public network is concerned, however, the network simply sees the ISPBX as

single user with multiple channels available.

4. A user on an ISPBX can use different D-Channel protocols to those in use by the public ISDN network

connected to the ISPBX - true or false?

True.

Since the ISPBX is effectively a private network to which all the users are connected, the ISPBX is in total

control of the ISDN protocol it wishes to use.

The information from the users gets presented to the public network by the ISPBX itself. The ISPBX

therefore needs to communicate externally to the public network in whatever protocol is being used by the

local ISDN provider. Internally, however, it can, and frequently does, deploy ISDN using a proprietary

implementation of the protocol.

This is usually in order to add special features for use within the private network. However, this also means

that certain functions which standards-based ISDN equipment expects to be present may not be

implemented in the normal way on the ISPBX.

These differences can frequently be the cause of problems arising when using ISDN equipment via an

ISPBX. The best method of diagnosing these type of faults is to get access to a standard public ISDN line

and see if the problem persists. If it doesn't, as is likely, then the ISPBX will need to be re-configured or

upgraded.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 55 56

Brak uwag

Eicon Networks ISDN NT1 Dokumentacja Strona 14