Troubleshooting Q.SIG Between Cisco 2811 and IPC Alliance.

[DELL ACORD]

Having an issue getting layer 2 between Cisco 2811 and IP Alliance sollution.

Layer 2 keeps bouncing.

Posting config. from Cisco 2811.

controller E1 0/0/0

pri-group timeslots 1-31 service mgcp

description DID Range(s): xxxx;xxxx;xxxx

interface Serial0/0/0:15

description Trader Q.SIG Link One

no ip address

encapsulation hdlc

isdn switch-type primary-qsig

isdn timer T310 300000

isdn protocol-emulate network

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

Any suggestions would be helpful.

Thanks,

DTA

[paolo bevilacqua]

Hi, likely you need clock source internal under controller E1 for this type of connection.

Hope this helps, please rate post if it does!

[DELL ACORD]

I have another site where clock source line is working.

E1 0/0/0 is up.

Applique type is Channelized E1 - balanced

No alarms detected.

alarm-trigger is not set

Version info Firmware: 20070320, FPGA: 20, spm_count = 0

Framing is CRC4, Line Code is HDB3, Clock Source is Line.

MABOSOF5MVTR02#sh isdn status

Global ISDN Switchtype = primary-qsig

%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may not apply

ISDN Serial0/0/0:15 interface

******* Network side configuration *******

dsl 0, interface ISDN Switchtype = primary-qsig

**** Master side configuration ****

L2 Protocol = Q.921 0x0000 L3 Protocol(s) = CCM MANAGER 0x0003

Layer 1 Status:

ACTIVE

Layer 2 Status:

TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 0 CCBs = 0

The Free Channel Mask: 0xFFFF7FFF

Number of L2 Discards = 0, L2 Session ID = 189

Both sites are configured the same on the Cisco side. Only one building is bouncing.

Vendor has stated both sites are configured the same on their equipment.

Thanks,

DTA

[paolo bevilacqua]

Setting clock source can resolve your issue so why not try it.

To look at circuit quality use "show controllers E1".