Cisco Bug: CSCul24898 - 8900/9900 Series IP Phone Sends malformed FROM header in SIP REGISTER
Nov 27, 2020
- Cisco Unified IP Phones 9900 Series
Known Affected Releases
Symptom: 8900/9900 IP phone unregisters after ending a call and will not re-register. Conditions: - Call was placed to a shared line - There was no caller-ID information sent by the provider for this call - Call was held on another phone and then resumed from the phone that unregistered.
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Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
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