U 192.168.100.251:5060 ->
192.168.100.248:5060 SIP/2.0 400 Cseq to small for this
call..From: 7000
<sip:7000@192.168.100.251>;tag=313f67a666bbe01fo0..To:
<sip:333 3@192.168.100.251>;tag=c0a864fa-13c4-3b657-e806584-486..Call-ID:
6c2c1772-c25c12c3@192.168.100.248..CSeq:
102 INVIT E..Via: SIP/2.0/UDP
192.168.100.248:5060;rport=5060;branch=z9hG4bK-3a2a2e37..Supported:
replaces..User-Agent: FXS_G W (4asipfxs.108a)..Content-Length:
0.... #