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Cisco Bug: CSCuq23360 - H323 GW plays ringback after H225 connect for PRI calls

Last Modified

Jul 31, 2017

Products (9)

  • Cisco IOS
  • Cisco 7206 Router
  • Cisco 7301 Router
  • Cisco 7204 Router
  • Cisco 7206VXR Router
  • Cisco 7202 Router
  • Cisco 7200 Series NPE-G2 Network Processing Engine
  • Cisco 7201 Router
  • Cisco 7204VXR Router

Known Affected Releases

15.2(4)M 15.3(2.24)T 15.4(2.12)T

Description (partial)

Symptom:
Caller continuously hears ringback tone while called party is able to hear caller. Two way audio is established after HOLD-RESUME.

Conditions:
Call Flow 
PSTN -> PRI -> GW -> H323 -> CUCM .

This issue is reproduced when using Native Call Queue functionality in CUCM 9.X or above.

A Similar issue for FXO lines is addressed in CSCue29351
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Bug Details Include

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