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Cisco Bug: CSCup83179 - SIP P-Asserted-Identity shows pending for calling name via ISDN FACILITY

Last Modified

Sep 14, 2019

Products (73)

  • Cisco IOS
  • Cisco 819 Hardened Integrated Services Router
  • Cisco 888W Integrated Services Router
  • Cisco 886VAG 3G Integrated Services Router
  • Cisco C897VA Integrated Services Router
  • Cisco 886VA-CUBE Integrated Services Router
  • Cisco 881SRSTW Integrated Services Router
  • Cisco 861W Integrated Services Router
  • Cisco 812 CiFi Integrated Services Router
  • Cisco C892FSP Integrated Services Router
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Known Affected Releases

15.3(2)T3

Description (partial)

Symptom:
Call flow: 

Phone->PSTN->PRI->GW->SIP->CUCM->IP phone

The IP phone will show the caller id for an inbound call from the PSTN with the calling number correctly but will show the calling name as "pending"

Conditions:
The problem is only seen when the ISDN PRI is provisioned to receive the calling name via the "name to follow" FACILITY message a few msec after the Q931 SETUP message and the Cisco Gateway (GW) is hence configured with the command "timers buffer-invite X" (where X, in msec, is the time difference between the arrival of the initial Q931 SETUP message and the subsequent FACILITY message containing the calling name from the ISDN switch)
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Known Fixed Releases
  • Related Community Discussions
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