Preview Tool

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

Last Modified

Apr 12, 2021

Products (73)

  • Cisco 2600 Series Multiservice Platforms
  • 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
View all products in Bug Search Tool Login Required

Known Affected Releases


Description (partial)

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"

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)
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.