Cisco Bug: CSCul90883 - One-way audio call happens when CCM service is stopped in H.323 ICT call
Nov 27, 2020
- Cisco Unified Communications Manager (CallManager)
Known Affected Releases
Symptom: Call Preservation does not work fine then one-way audio happens when SDL Link Out of Service is detected. Conditions: The issue happens with calls through Gatekeeper or non-Gatekeeper ICT. Here is an example of an environment that it is seen: Call Flow: IP Phone A ---- CUCM#1(*) ---- CUCM#2 ---- Gatekeeper or non-Gatekeeper ICT ---- CUCM#3 ---- CUCM#4 ---- IP Phone B Service parameter : Allow Peer to Preserve H.323 Calls is TRUE Steps: 1. IP Phone B places a call to IP Phone A and the call is established. 2. Stopping CCM Service on CUCM#1(*) for testing. 3. CUCM#2 detects SDL Link Out of Service and sends CloseLogicalChannel to CUCM#3. 4. One-way audio issue is seen on IP Phone B side. IP Phone B cannot hear audio from IP Phone A. <<<<<< Strange behavior IP Phone A can hear audio from IP Phone B.
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