<--- SIP read from 200.155.126.98:5060 --->
REGISTER sip:sip1.bcmg.com.br SIP/2.0
Via: SIP/2.0/UDP 192.168.200.10:5060
From:  <sip:3058@sip1.bcmg.com.br;user=phone>
To:  <sip:3058@sip1.bcmg.com.br;user=phone>
Call-ID: 1163677255@192.168.200.10
CSeq: 44 REGISTER
Contact:  <sip:3058@200.155.126.98:5060;user=phone;transport=udp>;expires=120
User-Agent: Cisco ATA  v2.15 ata18x (020927a)
Content-Length: 0