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Cisco Bug: CSCuq91086 - SIP-ESRST Resuming call on shared line fails. Results in new call

Last Modified

Nov 27, 2020

Products (2)

  • Cisco 2600 Series Multiservice Platforms
  • Cisco 2600 Series Multiservice Platforms

Known Affected Releases


Description (partial)

Phones failover to ESRST mode. Shared lines are defined across multiple phones and lines. When a call comes in and is answered then placed on hold, that call can only be "resumed" on the phone that placed it on hold. Resuming the call from one of the other phones that shares that line fails and results in a new call being made and processed by the ESRST gateway.

Platform independent. Reproduced on 2900 series ISR
15.2T, 15.4(3)M 
7861 SIP IP phones
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