<-- SIP read from 216.18.125.7:5065:
ACK sip:s@192.168.1.101 SIP/2.0
To: <sip:18198502523@216.18.125.3;user=phone>;tag=as66f3f883
From: "anonymous"<sip:anonymous@anonymous.invalid>;tag=d3aeaa05
Via: SIP/2.0/UDP 216.18.125.7:5065;branch=z9hG4bK-d87543-4a6d894813fcbe09-1-cHA0MDNmMzgxYWFlNTkyMTFiOWQxNg..-d87543-
Call-ID: 2f4ff91a273a0f436b8d017e26c89133
CSeq: 185851410 ACK
Contact: <sip:Gjuq2l5Ch49Inivqkpc6UNOpnAoS_Ovkg..@216.18.125.7:5065>
Max-Forwards: 68
Allow: REGISTER, OPTIONS, INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, INFO, SUBSCRIBE
Supported: em, timer, replaces, path
User-Agent: Audiocodes-Sip-Gateway-Mediant 2000/v.4.80A.034.004
Content-Length: 0