Cisco Bug: CSCun41068 - VWIC3 faces one-way audio with few Service Providers(VWIC2 works fine)
Nov 27, 2020
- Cisco 3900 Series Integrated Services Routers
Known Affected Releases
Symptom: VWIC3 faces no-audio(no ringback) on Outbound calls. Inbound calls work fine. VWIC2 works absolutely fine. This happens with only few Service Provider(like Alcatel). Conditions: This happens with only few Service Providers(like Alcatel 1642). With VWIC2 works all fine. In the RIN you see audio but you do not get SIN/SOUT in PCM or get muted audio in SIN/SOUT if you get it. Applies to all IOS Applies to ISRG2(3945 platform specifically checked) Not a HW issue as applies to all 3945 having VWIC3 going to the provider. Only Outbound calls face the issue. Inbound calls work fine.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.
Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
- Related Community Discussions
- Number of Related Support Cases