Video conferencing using SILC card

[twscrb]

Option 61, Release 3.0

We've been using an SILC card for ISDN BRI for our Polycom Viewstation successfully. We recently switched to another brand of video conferencing equipment but now we can't receive any incoming ISDN calls for video. During the installation of the video equipment, no changes were made to the PBX. The same BRI lines were just plugged into the new equipment.

On an incoming ISDN call this is what we're seeing when monitoring the D-channel:
DCH 1 IMSG SETUP REF 000080DC CH 13 2 TOD 8:46:02
CALLING #:917041737762 NUM PLAN: E164/NATIONAL (NPA)
CALLED #:9880 NUM PLAN: NUM UNKNOWN/UNKNOWN (UNKNOWN)

DCH 1 IMSG RELEASE REF 000080DC CH 13 2 TOD 8:46:12
CAUSE :RECOVERY ON TIMER EXPIRY

DCH 1 IMSG SETUP REF 000080DD CH 13 2 TOD 8:46:12
CALLING #:817030626651 NUM PLAN: E164/NATIONAL (NPA)
CALLED #:9880 NUM PLAN: NUM UNKNOWN/UNKNOWN (UNKNOWN)

DCH 1 IMSG RELEASE REF 000080DD CH 13 2 TOD 8:46:22
CAUSE :RECOVERY ON TIMER EXPIRY

DCH 1 IMSG SETUP REF 000080DE CH 13 2 TOD 8:46:26
PROGRESS: ORIG ADDR IS NOT ISDN
CALLING #:817030626651 NUM PLAN: E164/NATIONAL (NPA)
CALLED #:9880 NUM PLAN: NUM UNKNOWN/UNKNOWN (UNKNOWN)

DCH 1 IMSG RELEASE REF 000080DE CH 13 2 TOD 8:46:36
CAUSE :RECOVERY ON TIMER EXPIRY

Here's a printout of the BRI channels from LD 32:
SW DSL L2 #TEI L1 D-CHANNEL RCVY CLK MODE
==== ==== ==== ==== ==== ========= ==== ==== ====
00 = IDLE LINE RLS 0 DOWN
01 = IDLE LINE RLS 0 DOWN
02 = IDLE LINE RLS 0 DOWN
03 = UNEQ
04 = UNEQ
05 = UNEQ
06 = UNEQ
07 = UNEQ

... and a printout of one of the BRI TNs:

TN 4 1 5 0
DES BRI
CUST 0
CTYP SILC
OPT BRIL
MISP 2
MODE NTAS
B1CT VCE DTA
B2CT VCE DTA
LDN NO
XLST 0
MTEI 8
MCAL 16
MTSP 2
LAPD 0
PRID 6
PDCA 1
FDN
EFD
HUNT 9882
EHT
TGAR 1
NCOS 7
SGRP 0
CLS CTD ICDD CDMD MRD ABDD PGND BRTD
DATE 16 SEP 2002

 

[SL1M1]

Try to disabling the SILC card and then the MISP (Loop)

LD 32
.DISC (SILC Card)
.DISL (MISP Loop)

.ENLL (MISP Loop) will forcedownload/process
.ENLC (SILC Card)

See if this helps

Cheers!!

 

[twscrb]

SL1M1, I disabled/re-enabled the SILC and MISP cards and had a different remote site dial into our site but it still didn't work. I can see the incoming call trying to make the connection but it just never connects.

Here's one of the D channel messages:

DCH 1 IMSG SETUP REF 000083B5 CH 13 8 TOD 17:03:18
CALLING #:6238710 NUM PLAN: NUM UNKNOWN/NATIONAL (UNKNOWN)
CALLED #:9880 NUM PLAN: NUM UNKNOWN/UNKNOWN (UNKNOWN)
DCH 1 IMSG RELEASE REF 000083B5 CH 13 8 TOD 17:03:28
CAUSE :RECOVERY ON TIMER EXPIRY

 

[bhassell2000]

is the new video unit configured the same? The same SPIDs?

Thanks,

Buddy

Linked in Profile

http://www.linkedin.com/pub/buddy-hassell/7/5a5/b8b

 

[marc3lo]

Make a test calling the new Videoconference unit with a single channel. If the call is connect it rhe problem should be on the videoconfernce config.

 

[SL1M1]

If all is the same in config and physical connections revert/connect the original Video Conf and test again, you could also source a ISDN2 tester and see if you can call Out & Internal, may seem silly but re-krone/punch down the SILC ports on the frame aswell

Cheers!!