Cisco Bug: CSCta16946 - incorrect SIP URI - @ sign is present when user field is empty
Feb 21, 2018
- Cisco 2800 Series Integrated Services Routers
Known Affected Releases
Symptom: When an ISDN SETUP message is sent without Calling Line Identity to the ISR, the ISR inserts the following PAID in the SIP INVITE: P-Asserted-Identity: <sip:@22.214.171.124> This is an incorrect SIP URI: the user field is empty and the @ sign is incorrectly included. Third party device does not accept this as valid SIP syntax and rejects the call. They would expect the following PAID: P-Asserted-Identity: <sip:126.96.36.199> Conditions: The ISR sends: P-Asserted-Identity: <sip:@188.8.131.52> We then receive: SIP/2.0 400 Invalid P-Asserted-Identity Note: If they configure a default CLI under the pots dialpeer then the call works, or if the ISDN SETUP has CLI the call works.
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