[cisco-voip] Unusual Q921 Status

[James.Brown at barclayswealth.com]

All,

Has anyone seen a Q921 status similar to the following? I have witnessed this on MGCP and H323 Gateways running various 12.4 images.

Calls seem to be healthy across the link (it's a QSIG E1), but the TEI_ASSIGNED status is a concern. I read that "SAPI = 0" refers to the Q931 protocol, but why we have so many TEI numbers listed is a mystery.

Could anyone shed any light please?

Regards

James.

--

#show isdn status
Global ISDN Switchtype = primary-net5
%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may not apply
ISDN Serial0/2/0:15 interface
        ******* Network side configuration ******* 
        dsl 1, 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
        TEI = 2, Ces = 255, SAPI = 0, State = TEI_ASSIGNED
        TEI = 1, Ces = 255, SAPI = 1, State = TEI_ASSIGNED
        TEI = 4, Ces = 255, SAPI = 4, State = TEI_ASSIGNED
        TEI = 8, Ces = 255, SAPI = 8, State = TEI_ASSIGNED
        TEI = 2, Ces = 255, SAPI = 2, State = TEI_ASSIGNED
        TEI = 16, Ces = 255, SAPI = 16, State = TEI_ASSIGNED
        TEI = 32, Ces = 255, SAPI = 32, State = TEI_ASSIGNED
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 1 CCBs = 0
    The Free Channel Mask:  0xFFFF7FFF
    Number of L2 Discards = 0, L2 Session ID = 243
    Total Allocated ISDN CCBs = 0



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