On further testing, using the IP address instead of the domain name in the URI setting of Linphone works with TCP, so I think this might be to do with SRV/NAPTR records associated with the domain.
On 31 January 2016 at 08:29, Nabeel <[email protected]> wrote: > Hello, > > There seems to be a problem with calls over TCP using Linphone, and since > Linphone is a popular open source application, I would like someone to > please verify this problem. Calls work fine with Linphone over UDP, but > after registering with TCP using the same credentials, calls do not connect > at all and lead to a request timeout. A request timeout does not say much > about the cause, but in this case I suspect there is something wrong with > TCP on the server side. I would like someone to please install Linphone on > your phone and connect to your OpenSIPS server using UDP and TCP. Please > report here if the calls work over both transports. >
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