(PM) PM3 V.90 PRI Problem

Gary Merck (mgary@carol.net)
Tue, 2 Mar 1999 20:44:01 -0500 (EST)

I have a first for me. I am having trouble with V.90 connections over a
certain PRI. I have discovered that analog connections over this PRI are
lacking. I am sure the telco will need to be hand held during
troubleshooting and hope to tap the vast experiences of this group for
clues going into the trouble call.

To make a long story short, the PM3 with this "new" PRI cannot
support V.90 connections very well. From some locations with some V.90
modems, I am able to make a V.90 connection. But even in this case, I
always get slower connect speeds than I do going into a identically
configured PM3 sitting beside it in the same POP or to any other PM3 on my
network.

>From other locations, I cannot get a V.90 modem to connect to this PRI,
I have to force V.34 and of course it works fine with V.34 connections
always.

I'll stop here and not write a book. Config info below.

I have searched the archives and seen references to padding and levels.
Has anyone ran into something similar? Any recommendations?
Any good tools out there to help shed light?

3.8,5ESS,PRI,B8ZS/ESF

---------------------- line0 - T1 Primary Rate ISDN ---------------

Status: UP Framing: ESF Encoding: B8ZS PCM: u-law
Receive Level: +2dB to -7.5dB

Alarms Violations
----------------------------- -----------------------------
Blue 0 Bipolar 0
Yellow 0 CRC Errors 0
Receive Carrier Loss 0 Multiframe Sync 0
Loss of Sync 0

Thanks,

Gary

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