REFER sip:sip@192.168.32.1 SIP/2.0 Max-Forwards: 70 Content-Length: 0 Via: SIP/2.0/UDP 192.168.32.84:5060;branch=z9hG4bK33686001d;rport Call-ID: 201d66817a4b0265062a611560fbdf99@vutbr.cz From: ;tag=e26e0d2cf0083ae To: "OptimTalk" ;tag=as26fac9b5 CSeq: 1454146061 REFER Supported: timer,replaces Contact: Refer-To: Referred-By: User-Agent: Stonehenge IP250-S 1.30.171