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decoding the error message TEI_ASSIGNED

Posted on 2017-03-08
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Last Modified: 2017-03-14
I support a remote center that has phone over a PRI line. At the moment, no calls can go in or out. When I look at the router, Cisco 2901, there are no recent errors on the line, but the output for the "show isdn status", this is the output:

 dsl 0, interface ISDN Switchtype = primary-ni
        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 = TEI_ASSIGNED
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 0 CCBs = 0
    The Free Channel Mask:  0x807FFFFF
    Number of L2 Discards = 0, L2 Session ID = 4
    Total Allocated ISDN CCBs = 0

what does "State = TEI_ASSIGNED" mean? How do I resolve this?
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Question by:Keith Smith, MBA
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gheist earned 500 total points
ID: 42040927
can you trace ISDN? TEI_ASSIGNED state means cannot connect other end
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Author Comment

by:Keith Smith, MBA
ID: 42042068
Gheist,

Just found out today that rebooting the router resolved the issue. I do not think this is the total resolve, but a cough drop for the real problem.  I think there is something more to this and this will happen again. Next time I will be better prepared with this bit of knowledge. Thanks for your response.

Keith
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by:gheist
gheist earned 500 total points
ID: 42042126
Probably provider updated their end and it had to go down and up to restart....
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Author Comment

by:Keith Smith, MBA
ID: 42042132
never thought of that ... will make a note of that if it happens again. Thanks.
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Expert Comment

by:gheist
ID: 42043507
Collect good syslog, thats nice to send to technical help desk (dont burden callcenter with your problems (tm) )
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Author Comment

by:Keith Smith, MBA
ID: 42043543
always remember that point ... you only fail that point once
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Expert Comment

by:gheist
ID: 42043573
If yhe help request looks complex enough syslog will look complex enough to get free escalation to right team that can read it...
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Author Closing Comment

by:Keith Smith, MBA
ID: 42048256
information provided help clear up confusion on the message that help resolve problem.
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