I am forwarding a question from one of my co-workers. He is not a member of
this discussion group, so I will play middle man to the question.
Thanks for your responses.
I have a PBX ISDN-S/T interface application question. In this application,
the Motorola ISDN-S/T Interface transceiver (MC145574), which is on a PBX
line card, is configured as a TE and is connected to the Public Switched
Telephone Network (PSTN) through an external NT1 box. The transceiver must
be in the clock Slave mode (i.e. PCM clock and Frame Sync are provided from
the PBX).
In the TES mode, the Motorola transceiver does not support D-channel
contention resolution. This means that the PBX/TE--NT1 node must be
point-to-point only and cannot be connected multi-drop with other TE
devices attached to it. In the multi-drop configuration (if allowed),
these additional TEs would bypass the PBX and the PBX/TE must compete with
them for the PSTN bandwidth.
Questions:
Is there a demand anywhere in the worldwide market for multi-drop
capability at this type of PBX/TE--NT1 node? In the US? In Europe? In
Japan?
Do you know of any PBX manufacturers who provide this capability?
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Joe Dwyer
Manager of International Engineering
Inter-Tel, Inc.
7300 West Boston Street
Chandler, AZ 85226 U.S.A.
Tel: +1 602 961 9000 x1235
Fax: +1 602 961 6940
Email mailto:[email protected]
Home Page http://www.inter-tel.com
Inter-Tel is a single point of contact, full service solutions
integrator providing digital business communication platforms,
voice processing platforms, call processing and voice processing
software, CTI, network services and long distance calling services.
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