Please check this bug .
CSCtg47522 SCCP CIPC and IP Phone 7970 will not failover to SRST 8.0/8.1
| Version | 7.0(3) |
|---|
| Original-version | 7.0(3) |
|---|
| To-be-fixed | 9.9(9) 8.6(1) |
|---|
CIPC 7.0(3) and 7.0(3.3) uses an unsupported phone firmware--version 8.3(5)--that sends malformed LineStatV2Message which results to not register with SRST 8.0
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CIPC uses the wrong format for the LineStatV2Message sent during registration to SRST/CME. This causes it not to register with SRST/CME 8.0.
CIPC will display "CM Fallback Service Operating" and will never display the line information. The phone will eventually unregister and get stuck in a loop.
Symptom:
The phone displays the message "CM Fallback Service Operating" in the status area. Button Lines do not display an extension number..
Conditions:
CIPC 7.x
SRST router running IOS 15.0(1)XA or 15.1(1)T
Workaround:
CIPC uses a phone firmware version that currently does not support SRST 8.0. Please downgrade IOS/SRST version to 15.0(1)M
Description
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Per Nancy Chen suggestion, fixed committed into 15.1(1)T2 and 15.1(2)T2.
Retest
1) 15.1(1)T2 = CME 8.0. Both CIPC 8.5.0.x and IP Phone 7970 SCCP 9.1.1 do not failover, CUCM version 8.5.1.1000-23
2) 15.1(2)T2 = CME 8.1.CIPC 7.0(3) and 7.0(3.3) uses an unsupported phone firmware--version 8.3(5)--that sends malformed LineStatV2Message which results to not register with SRST 8.0
-----------
CIPC uses the wrong format for the LineStatV2Message sent during registration to SRST/CME. This causes it not to register with SRST/CME 8.0.
CIPC will display "CM Fallback Service Operating" and will never display the line information. The phone will eventually unregister and get stuck in a loop.
Tin Luong 04/12/2011
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Per Nancy Chen suggestion, fixed committed into 15.1(1)T2 and 15.1(2)T2.
Retest
1) 15.1(1)T2 = CME 8.0. Both CIPC 8.5.0.x and IP Phone 7970 SCCP 9.1.1 do not failover, CUCM version 8.5.1.1000-23
2) 15.1(2)T2 = CME 8.1.
It could be this bug
HTH
PS: Rate useful posts
Regards,
sumit
