<------------>
    -- Started music on hold, class 'default', on SIP/trunk-squire-outcoming-00000029

<--- SIP read from UDP:10.20.1.2:5060 --->
ACK sip:0633040100@87.248.56.101:5060 SIP/2.0
Via: SIP/2.0/UDP 10.20.1.2:5060;branch=z9hG4bK609B2663A2AF6B65
From: <sip:0287250030@87.248.56.101>;tag=D12E38D6D5BC6B87
To: <sip:0633040100@87.248.56.101>;tag=as785ae896
Call-ID: CA3DF1B34853CF48@10.20.1.2
CSeq: 6560 ACK
Contact: <sip:0287250030@10.20.1.2;uniq=73A845E0147AC676B88F6EC07EFF8>
Max-Forwards: 70
User-Agent: AVM FRITZ!Box Fon WLAN 7170 Annex A 58.04.84 (Apr 4 2011)
Content-Length: 0

<------------->
--- (10 headers 0 lines) ---

<--- SIP read from UDP:10.20.1.2:5060 --->
INVITE sip:0633040100@87.248.56.101:5060 SIP/2.0
Via: SIP/2.0/UDP 10.20.1.2:5060;rport;branch=z9hG4bKB656757AE324D2EB
From: <sip:0287250030@87.248.56.101>;tag=D12E38D6D5BC6B87
To: <sip:0633040100@87.248.56.101>;tag=as785ae896
Call-ID: CA3DF1B34853CF48@10.20.1.2
CSeq: 6561 INVITE
Contact: <sip:0287250030@10.20.1.2;uniq=73A845E0147AC676B88F6EC07EFF8>
Authorization: Digest username="0287250030", realm="asterisk", nonce="46f88911", uri="sip:0633040100@87.248.56.101:5060", response="d24306b6578c9820630bb3341673529d", algorithm=MD5
Max-Forwards: 70
User-Agent: AVM FRITZ!Box Fon WLAN 7170 Annex A 58.04.84 (Apr 4 2011)
Supported: 100rel,replaces
Allow-Events: telephone-event,refer
Allow: INVITE,ACK,OPTIONS,CANCEL,BYE,UPDATE,PRACK,INFO,SUBSCRIBE,NOTIFY,REFER,MESSAGE,PUBLISH
Content-Type: application/sdp
Accept: application/sdp, multipart/mixed
Accept-Encoding: identity
Content-Length: 375

v=0
o=user 1321894 1321896 IN IP4 10.20.1.2
s=call
c=IN IP4 10.20.1.2
t=0 0
m=audio 7082 RTP/AVP 8 0 2 102 100 99 97 18 101
a=sendrecv
a=rtpmap:2 G726-32/8000
a=rtpmap:102 G726-32/8000
a=rtpmap:100 G726-40/8000
a=rtpmap:99 G726-24/8000
a=rtpmap:97 iLBC/8000
a=fmtp:97 mode=30
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-11
a=rtcp:7083