(PM) PM3 CT1

John Nowack (john@tremont.dpc.net)
Tue, 16 Jun 1998 11:18:16 -0500

I have a PM3 with 2 CT1's that was turned up a couple of weeks ago. I
am having some problems with connects on that box, and while the local
GTE guys are very willing to work with me, we are getting stumped and
their upper-level support is not being helpful ("it's a modem, that's just
the way it is").

V.34 users are getting poor connects and there are lots of retrains.
K56Flex users are getting good connects (in the 46-50K range).

The T1's are provisioned D4-AMI, wink start out of a 5ESS switch. The same
switch that feeds two other PM3s with PRI from another city. These used
to be CT1 until about 3 weeks before the new PM3 was put in, and it worked
great for a year. The T1's themselves are clean, taking no errors except
for when we are trying something.

Some interesting things: I cannot place a 56K DOSBS call from the PRI-
fed using at&n55 or at&n56. I get the following output:
at&n56dt9254600
S46: Sending Call Request - 9254600

S46: Received Proceeding
S46: Received Disconnect Incompatible Dest (B1 ID:802f)
S46: Sending Disconnect Request
S46: Received Clear Conf (B1 ID:802f)
NO CARRIER

at&n55dt9254600
S46: Sending Call Request - 9254600 (VOICE)

S46: Received Proceeding
S46: Received Progress Unspecified Cause
S46: Received Connect - B1
CONNECT 56000
(then nothing -- no login: prompt after waiting two minutes)

I can call another CT1-fed PM3 in another city using either at&n56 or
at&n55 with no problems.

I suspect the CT1 is not provisioned right or there is something wrong
somewhere. While I was writing this GTE called and said they wanted to
try moving the T1s to a different fiber card. The one they are on now
is a AT&T that is not clocked from the switch, but is free-running. We'll
see, but if anyone has any ideas I'm all ears. I had opened a ticket
with Livingston (Lucent), but they said (and I can understand) as the PM3
was functioning OK, it was a telco issue with the switch and they couldn't
tell the telco exactly what to change (which is what seems to be needed).

John

--
John Nowack
john@dpc.net
DPConsultants, Inc.
Sys Admin -- dpc.net
309-925-2451
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