[Jan 11 09:04:03] VERBOSE[3075] chan_sip.c:
<--- SIP read from UDP:10.0.2.121:5060 --->
SUBSCRIBE sip:28@10.0.2.3 SIP/2.0
Via: SIP/2.0/UDP 10.0.2.121:5060;branch=z9hG4bK-5smh5ebg8jdo;rport
From: <sip:21@10.0.2.3>;tag=2k4ghv51jq
To: <sip:28@10.0.2.3>
Call-ID: 3c287f814814-tlex7kjst79b
CSeq: 13 SUBSCRIBE
Max-Forwards: 70
Contact: <sip:21@10.0.2.121:5060;line=s0co3mb3>;reg-id=1
Event: dialog
Accept: application/dialog-info+xml
User-Agent: snom320/8.4.22
Authorization: Digest username="21",realm="asterisk",nonce="238c81f5",uri="sip:28@10.0.2.3",response="a1ca79c773d635133a970bd732369548",algorithm=MD5
Expires: 3600
Content-Length: 0


<------------->
[Jan 11 09:04:03] VERBOSE[3075] chan_sip.c: --- (14 headers 0 lines) ---
[Jan 11 09:04:03] DEBUG[3075] acl.c: Found IP address for this socket
[Jan 11 09:04:03] DEBUG[3075] chan_sip.c: Setting SIP_TRANSPORT_UDP with address 10.0.2.3:5060
[Jan 11 09:04:03] DEBUG[3075] chan_sip.c: Allocating new SIP dialog for 3c287f814814-tlex7kjst79b - SUBSCRIBE (No RTP)
[Jan 11 09:04:03] DEBUG[3075] chan_sip.c: **** Received SUBSCRIBE (10) - Command in SIP SUBSCRIBE
[Jan 11 09:04:03] VERBOSE[3075] chan_sip.c: Creating new subscription
[Jan 11 09:04:03] DEBUG[3075] chan_sip.c: Initializing initreq for method SUBSCRIBE - callid 3c287f814814-tlex7kjst79b
[Jan 11 09:04:03] VERBOSE[3075] chan_sip.c: Sending to 10.0.2.121 : 5060 (no NAT)
[Jan 11 09:04:03] DEBUG[3075] chan_sip.c: build_route: Contact hop: <sip:21@10.0.2.121:5060;line=s0co3mb3>;reg-id=1
[Jan 11 09:04:03] VERBOSE[3075] chan_sip.c: list_route: hop: <sip:21@10.0.2.121:5060;line=s0co3mb3>
[Jan 11 09:04:03] VERBOSE[3075] chan_sip.c: Found peer '21' for '21' from 10.0.2.121:5060
[Jan 11 09:04:03] VERBOSE[3075] chan_sip.c:
<--- Transmitting (no NAT) to 10.0.2.121:5060 --->
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.0.2.121:5060;branch=z9hG4bK-5smh5ebg8jdo;received=10.0.2.121;rport=5060
From: <sip:21@10.0.2.3>;tag=2k4ghv51jq
To: <sip:28@10.0.2.3>;tag=as46a37eb2
Call-ID: 3c287f814814-tlex7kjst79b
CSeq: 13 SUBSCRIBE
Server: FPBX-2.8.0(1.6.2.301220)
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces, timer
WWW-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="702e8e7e"
Content-Length: 0


<------------>
[Jan 11 09:04:03] DEBUG[3075] chan_sip.c: Trying to put 'SIP/2.0 401' onto UDP socket destined for 10.0.2.121:5060
[Jan 11 09:04:03] VERBOSE[3075] chan_sip.c: Scheduling destruction of SIP dialog '3c287f814814-tlex7kjst79b' in 6400 ms (Method: SUBSCRIBE)