Unable to get D-Channel to establish between Nortel Opt 11 and CS1000

[Cory356]

All of a sudden one of our remote branch office Option 11's cannot establish a D-Channel connection to our Main Office CS1000 via a Cisco PRI. This has worked fine ever since I started working here 5 years ago but all of a sudden on Thursday its failed. I have replaced the DTI card in the remote Option 11, rolled the DTI card in the Option 11 and have verified that the cards are good. I have checked the cabling from our Cisco 7206 in the main office to the PRI card in the Option 11, checked the cabling from the PRI card in the Option 11 to the WIC card in our Cisco 2801 at the remote site. We have swapped ports on the 7206 and verified that the Cisco is not the issue. We are not seeing any alarms and if I do a show voice call sum in the 2801 router it looks as if 8 B-Channels will establish but not the D-Channel. Our maintenance company is saying it is Cisco, our Cisco vendor is saying it's Nortel. Any ideas of what else I can look at?

 

[bhassell2000]

loop back the circuit to the nortel and turn it up. If you get a "release wrong mode" message it tells me the hardware and programming should be good. Make sure you have one end network and one end user on the dch programming.

Thanks,

Buddy

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[Cory356]

not to sound ignorant but how exactly do I loop back the circuit?

 

[Cory356]

I just spoke with our Nortel guy and he said we have done that and it is programmed to be one end user and one end network.

Here is what is coming out of the Cisco router that act as the CSU

The 0/3/0:0.24 is our D-Channel

Lexington-2801#sh voice call sum
PORT CODEC VAD VTSP STATE VPM STATE
============== ========= === ==================== ======================
0/3/0:0.24 - - - S_TRUNK_PEND
0/3/0:1.5 - - - S_TRUNK_PEND
0/3/0:2.6 - - - S_TRUNK_PEND
0/3/0:3.7 - - - S_TRUNK_PEND
0/3/0:4.8 - - - S_TRUNK_PEND
0/3/0:5.9 g711ulaw y S_CONNECT S_TRUNKED
0/3/0:6.10 g711ulaw y S_CONNECT S_TRUNKED
0/3/0:7.11 g711ulaw y S_CONNECT S_TRUNKED
0/3/0:8.12 g711ulaw y S_CONNECT S_TRUNKED
0/3/0:9.13 - - - S_TRUNK_PEND
0/3/0:10.14 - - - S_TRUNK_PEND
0/3/0:11.15 - - - S_TRUNK_PEND
0/3/0:12.16 - - - S_TRUNK_PEND
0/3/0:13.17 g711ulaw y S_CONNECT S_TRUNKED
0/3/0:14.18 g711ulaw y S_CONNECT S_TRUNKED
0/3/0:15.19 g711ulaw y S_CONNECT S_TRUNKED
0/3/0:16.20 g711ulaw y S_CONNECT S_TRUNKED
0/3/0:17.21 - - - S_TRUNK_PEND
0/3/0:18.22 - - - S_TRUNK_PEND
0/3/0:19.23 - - - S_TRUNK_PEND

This is what the Loop and DCH look like at the CS1000


PRI* TRK LOOP 20 - ENBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : NO ALARM
CH 01 - UNEQ CH 02 - UNEQ
CH 03 - UNEQ CH 04 - UNEQ
CH 05 - MBSY TIE 3VCE * CH 06 - MBSY TIE 3VCE *
CH 07 - MBSY TIE 3VCE * CH 08 - MBSY TIE 3VCE *
CH 09 - MBSY TIE 3VCE * CH 10 - MBSY TIE 3VCE *
CH 11 - MBSY TIE 3VCE * CH 12 - MBSY TIE 3VCE *
CH 13 - MBSY TIE 3VCE * CH 14 - MBSY TIE 3VCE *
CH 15 - MBSY TIE 3VCE * CH 16 - MBSY TIE 3VCE *
CH 17 - MBSY TIE 3VCE * CH 18 - MBSY TIE 3VCE *
CH 19 - MBSY TIE 3VCE * CH 20 - MBSY TIE 3VCE *
CH 21 - MBSY TIE 3VCE * CH 22 - MBSY TIE 3VCE *
CH 23 - MBSY TIE 3VCE * CH 24 - DCH 8


DCH 008 : OPER RLS AUTO
DES : LEXINGTON

Here is what they look like on the Option 11

PRI* TRK LOOP 9 - ENBL
FFMT/LCMT/YALMT: ESF/B8Z/FDL
TRACKING
SERVICE RESTORE: YES
YEL ALM PROCESS: YES
ALARM STATUS : NO ALARM
CH 01 - UNEQ CH 02 - UNEQ
CH 03 - UNEQ CH 04 - UNEQ
CH 05 - MBSY TIE * CH 06 - MBSY TIE *
CH 07 - MBSY TIE * CH 08 - MBSY TIE *
CH 09 - MBSY TIE * CH 10 - MBSY TIE *
CH 11 - MBSY TIE * CH 12 - MBSY TIE *
CH 13 - MBSY TIE * CH 14 - MBSY TIE *
CH 15 - MBSY TIE * CH 16 - MBSY TIE *
CH 17 - MBSY TIE * CH 18 - MBSY TIE *
CH 19 - MBSY TIE * CH 20 - MBSY TIE *
CH 21 - MBSY TIE * CH 22 - MBSY TIE *
CH 23 - MBSY TIE * CH 24 - DCH 3

DCH 03 : OPER RLS AUTO
DES : LEX

 

[Cory356]

I turned on D channel monitoring in the option 11 and I am seeing this come across .. not sure what it means



DCH: 3 OE130
0020
DCH: 3 I 0FB0
D02E
DCH: 3 O0080
0020
DCH: 3 I 2F30
D02E
DCH: 3 O2850
0020
DCH: 3 I 5680
D02E

 

[Cory356]

When I do an LCNT I get the following on the Opt 11


PRI TRK LOOP 9
TRSH CNT:
BPV -038
SLIPD -000
SLIPR -006
CRC -000
LOSFA -010
OS_BPV -003
OS_LOSFA-001
OS_YEL -000

 

[bhassell2000]

can you post the dch programming from ld 22 ADAN?

Thanks,

Buddy

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[phonejack99]

Are you using TMDI cards?