Last Modified: Nov 22, 2021
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Known Affected Versions:
11.5.1, 11.5.0, 11.4.1, 11.4.0, 11.3.0
Opened: May 30, 2014
Related Article: K16229
SIP sessions fail to setup media flows.
SIP media sessions are not established.
This occurs under the following conditions: -- SIP-ALG is configured on a virtual server. -- SIP client and server exchange more than one INVITE, and the second INVITE has a new cseq number. This can happen when the Proxy is requiring authentication from the client.
SIP-ALG now keeps track of the second INVITE and sequence number and recognizes the 200OK.