Hello, I'm encountering an issue where a Sonus SBC is rejecting all invites from pjsua. It seems to be the presence of multiple '/' characters in User-agent field: User-Agent: PJSUA v2.2 win32-6.1/i386/msvc-15.0 Replacing the '/' with '-' in os_info.c fixes the issue. According to Sonus the above User-Agent is out of spec, from 3261, 20.41 User-Agent The User-Agent header field contains information about the UAC originating the request. The semantics of this header field are defined in [H14.43]. From [H14.43, S10.45] Its syntax is defined as following: User-Agent = "User-Agent" HCOLON server-val *(LWS server-val) server-val = product / comment product = token [SLASH product-version] product-version = token Thanks, Bill
