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Cisco Bug: CSCvt48649 - calling party ID is not being updated from ISDN during transfer.

Last Modified

Mar 25, 2020

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

++ calling party ID is not being being updated from ISDN , basically the voice gateway generates q931 NOTIFY message to update caller ID successfully but if same message received from ISDN provider it failed to process it.
++ call flow: 
CUCM cluster 1 >>>> SIP >>>> Gateway 1 (ISR4331) >>> PRI >>>>> ISDN provider >>>> PRI >>>> Gateway 2 (ISR4331) >>>> SIP >>>> CUCM cluster 2 

the problem noticed when the call being transferred as the redirect caller ID is not being updates as expected.

++ both routers same model/ (ISR4331 , IOS version 16.11.1a) and have same configurations.

transfer over ISDN.
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