PSTN over PRI for ISDN?
Leonard (pmfan@infinetgroup.com)
Mon, 12 May 1997 15:53:56 -0700 (PDT)
Hi,
we're taking PRIs into a dual pri PM3. We're considering dedicating
one of the PRIs to handle only ISDN BRI calls. I dunno if the mainboard
processor of a PM3 can handle such loads (1 PRI all ISDN and 1 PRI all
analog), but I have a more immediate concern:
Our local telco insists that we need to ride PSTN over the PRI.
I can understand the need to do that for analog calls, but they insist
it's also needed for ISDN BRI calls. They're explaination is that
the PRI comes "as is" without any telephone number, and that we still
need the PSTN for the telephone number to overline (1 per B channel).
I was wondering if anyone has gotten their PRI to handle ISDN calls
without any PSTN on it. We're paying a nuclear bomb for the PSTN (more
than twice the PRI cost).
Thanks.
Leonard.