06:28:16.982282 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 1285)
    localhost..6060 > localhost..5060: SIP, length: 1257
	INVITE sip:op3@192.168.20.60 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport;branch=z9hG4bK1830764452
	From: <sip:00@192.168.20.40>;tag=554232430
	To: <sip:op3@192.168.20.60>
	Call-ID: 1027022968
	CSeq: 20 INVITE
	Contact: <sip:00@127.0.0.1:6060>
	Content-Type: application/sdp
	Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,REFER,NOTIFY,INFO,UPDATE,PRACK,SUBSCRIBE
	Max-Forwards: 70
	User-Agent: eXosip/5.3.0
	X-Endpoint-Type: DS
	Allow-Events: conference
	Supported: replaces,timer,100rel
	Content-Length:   750
	
	v=0
	o=gateway 0 17 IN IP4 192.168.20.60
	s=conversation
	c=IN IP4 192.168.20.60
	t=0 0
	m=audio 10004 RTP/SAVP 8 0 4 18 101 13 98
	a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:I8pVb9bcUeTx0SxqZcNPQVMzGbiDy/AoFnbTXnLv
	a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:mgkH1Upzb65/2b59IM4YIxY7WjbmP5hcmZjUibpz
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	m=audio 10004 RTP/AVP 8 0 4 18 101 13 98
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
06:28:17.004128 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 1479)
    localhost..5060 > localhost..6060: SIP, length: 1451
	INVITE sip:op3@127.0.0.1:6060;transport=udp SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-524287-1---bf0924550c29b502;rport
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1830764452
	Max-Forwards: 69
	Record-Route: <sip:192.168.20.60:5060;transport=udp;lr>
	Contact: <sip:00@127.0.0.1:6060>
	To: <sip:op3@192.168.20.60>
	From: <sip:00@192.168.20.40>;tag=554232430
	Call-ID: 1027022968
	CSeq: 20 INVITE
	Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, INFO, UPDATE, PRACK, SUBSCRIBE
	Content-Type: application/sdp
	Supported: replaces, timer, 100rel
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	X-Endpoint-Type: DS
	X-Secure-Transport: yes
	Content-Length: 750
	
	v=0
	o=gateway 0 17 IN IP4 192.168.20.60
	s=conversation
	c=IN IP4 192.168.20.60
	t=0 0
	m=audio 10004 RTP/SAVP 8 0 4 18 101 13 98
	a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:I8pVb9bcUeTx0SxqZcNPQVMzGbiDy/AoFnbTXnLv
	a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:mgkH1Upzb65/2b59IM4YIxY7WjbmP5hcmZjUibpz
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	m=audio 10004 RTP/AVP 8 0 4 18 101 13 98
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
06:28:17.014199 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 362)
    localhost..6060 > localhost..5060: SIP, length: 334
	SIP/2.0 100 Trying
	Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-524287-1---bf0924550c29b502;rport=5060
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1830764452
	From: <sip:00@192.168.20.40>;tag=554232430
	To: <sip:op3@192.168.20.60>
	Call-ID: 1027022968
	CSeq: 20 INVITE
	User-Agent: eXosip/5.3.0
	Content-Length: 0
	
06:28:17.059695 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 683)
    localhost..6060 > localhost..5060: SIP, length: 655
	SIP/2.0 180 Ringing
	Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-524287-1---bf0924550c29b502;rport=5060
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1830764452
	Record-Route: <sip:192.168.20.60:5060;transport=udp;lr>
	From: <sip:00@192.168.20.40>;tag=554232430
	To: <sip:op3@192.168.20.60>;tag=1817180611
	Call-ID: 1027022968
	CSeq: 20 INVITE
	Contact: <sip:op3@127.0.0.1:6060>
	Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,REFER,NOTIFY,INFO,UPDATE,PRACK,SUBSCRIBE
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	Supported: replaces,timer,100rel
	P-Asserted-Identity: <sip:op3@192.168.20.60>
	Require: 100rel
	RSeq: 100
	Content-Length: 0
	
06:28:17.072934 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 249)
    localhost..5060 > localhost..6060: SIP, length: 221
	SIP/2.0 100 Trying
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1830764452
	To: <sip:op3@192.168.20.60>
	From: <sip:00@192.168.20.40>;tag=554232430
	Call-ID: 1027022968
	CSeq: 20 INVITE
	Content-Length: 0
	
06:28:17.080041 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 608)
    localhost..5060 > localhost..6060: SIP, length: 580
	SIP/2.0 180 Ringing
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1830764452
	Record-Route: <sip:192.168.20.60:5060;transport=udp;lr>
	Require: 100rel
	Contact: <sip:op3@127.0.0.1:6060>
	To: <sip:op3@192.168.20.60>;tag=1817180611
	From: <sip:00@192.168.20.40>;tag=554232430
	Call-ID: 1027022968
	CSeq: 20 INVITE
	Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, INFO, UPDATE, PRACK, SUBSCRIBE
	Supported: replaces, timer, 100rel
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	RSeq: 100
	P-Asserted-Identity: <sip:op3@192.168.20.60>
	Content-Length: 0
	
06:28:17.105117 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 425)
    localhost..6060 > localhost..5060: SIP, length: 397
	PRACK sip:op3@127.0.0.1:6060 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport;branch=z9hG4bK1772458070
	Route: <sip:192.168.20.60:5060;transport=udp;lr>
	From: <sip:00@192.168.20.40>;tag=554232430
	To: <sip:op3@192.168.20.60>;tag=1817180611
	Call-ID: 1027022968
	CSeq: 21 PRACK
	Contact: <sip:00@127.0.0.1:6060>
	Max-Forwards: 70
	User-Agent: eXosip/5.3.0
	RAck: 100 20 INVITE
	Content-Length: 0
	
06:28:17.116951 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 462)
    localhost..5060 > localhost..6060: SIP, length: 434
	PRACK sip:op3@127.0.0.1:6060 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-524287-1---7150d9256623871a;rport
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1772458070
	Max-Forwards: 69
	Contact: <sip:00@127.0.0.1:6060>
	To: <sip:op3@192.168.20.60>;tag=1817180611
	From: <sip:00@192.168.20.40>;tag=554232430
	Call-ID: 1027022968
	CSeq: 21 PRACK
	User-Agent: eXosip/5.3.0
	RAck: 100 20 INVITE
	Content-Length: 0
	
06:28:17.127958 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 614)
    localhost..6060 > localhost..5060: SIP, length: 586
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-524287-1---7150d9256623871a;rport=5060
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1772458070
	From: <sip:00@192.168.20.40>;tag=554232430
	To: <sip:op3@192.168.20.60>;tag=1817180611
	Call-ID: 1027022968
	CSeq: 21 PRACK
	Contact: <sip:op3@127.0.0.1:6060>
	Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,REFER,NOTIFY,INFO,UPDATE,PRACK,SUBSCRIBE
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	Supported: replaces,timer,100rel
	X-Endpoint-Type: FXS
	P-Asserted-Identity: <sip:op3@192.168.20.60>
	Content-Length: 0
	
06:28:17.136094 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 539)
    localhost..5060 > localhost..6060: SIP, length: 511
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1772458070
	Contact: <sip:op3@127.0.0.1:6060>
	To: <sip:op3@192.168.20.60>;tag=1817180611
	From: <sip:00@192.168.20.40>;tag=554232430
	Call-ID: 1027022968
	CSeq: 21 PRACK
	Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, INFO, UPDATE, PRACK, SUBSCRIBE
	Supported: replaces, timer, 100rel
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	P-Asserted-Identity: <sip:op3@192.168.20.60>
	X-Endpoint-Type: FXS
	Content-Length: 0
	
06:28:21.537147 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 1102)
    localhost..6060 > localhost..5060: SIP, length: 1074
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-524287-1---bf0924550c29b502;rport=5060
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1830764452
	Record-Route: <sip:192.168.20.60:5060;transport=udp;lr>
	From: <sip:00@192.168.20.40>;tag=554232430
	To: <sip:op3@192.168.20.60>;tag=1817180611
	Call-ID: 1027022968
	CSeq: 20 INVITE
	Contact: <sip:op3@127.0.0.1:6060>
	Content-Type: application/sdp
	Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,REFER,NOTIFY,INFO,UPDATE,PRACK,SUBSCRIBE
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	Supported: replaces,timer,100rel
	X-Endpoint-Type: FXS
	P-Asserted-Identity: <sip:op3@192.168.20.60>
	Content-Length:   395
	
	v=0
	o=gateway 0 0 IN IP4 192.168.20.60
	s=conversation
	c=IN IP4 192.168.20.60
	t=0 0
	m=audio 10002 RTP/SAVP 8 101 13 98
	a=rtpmap:8 PCMA/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:zkZKsKgXv7LLI5fhh0qwaHHDq6AbjRj6KZPZKBFy
	a=sendrecv
	m=audio 0 RTP/AVP 8 0 4 18 101 13 98
06:28:21.557167 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 1025)
    localhost..5060 > localhost..6060: SIP, length: 997
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1830764452
	Record-Route: <sip:192.168.20.60:5060;transport=udp;lr>
	Contact: <sip:op3@127.0.0.1:6060>
	To: <sip:op3@192.168.20.60>;tag=1817180611
	From: <sip:00@192.168.20.40>;tag=554232430
	Call-ID: 1027022968
	CSeq: 20 INVITE
	Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, INFO, UPDATE, PRACK, SUBSCRIBE
	Content-Type: application/sdp
	Supported: replaces, timer, 100rel
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	P-Asserted-Identity: <sip:op3@192.168.20.60>
	X-Endpoint-Type: FXS
	Content-Length: 395
	
	v=0
	o=gateway 0 0 IN IP4 192.168.20.60
	s=conversation
	c=IN IP4 192.168.20.60
	t=0 0
	m=audio 10002 RTP/SAVP 8 101 13 98
	a=rtpmap:8 PCMA/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:zkZKsKgXv7LLI5fhh0qwaHHDq6AbjRj6KZPZKBFy
	a=sendrecv
	m=audio 0 RTP/AVP 8 0 4 18 101 13 98
06:28:21.574693 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 399)
    localhost..6060 > localhost..5060: SIP, length: 371
	ACK sip:op3@127.0.0.1:6060 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport;branch=z9hG4bK180670483
	Route: <sip:192.168.20.60:5060;transport=udp;lr>
	From: <sip:00@192.168.20.40>;tag=554232430
	To: <sip:op3@192.168.20.60>;tag=1817180611
	Call-ID: 1027022968
	CSeq: 20 ACK
	Contact: <sip:00@127.0.0.1:6060>
	Max-Forwards: 70
	User-Agent: eXosip/5.3.0
	Content-Length: 0
	
06:28:21.585690 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 436)
    localhost..5060 > localhost..6060: SIP, length: 408
	ACK sip:op3@127.0.0.1:6060 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-524287-1---29b7c8661ada0276;rport
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK180670483
	Max-Forwards: 69
	Contact: <sip:00@127.0.0.1:6060>
	To: <sip:op3@192.168.20.60>;tag=1817180611
	From: <sip:00@192.168.20.40>;tag=554232430
	Call-ID: 1027022968
	CSeq: 20 ACK
	User-Agent: eXosip/5.3.0
	Content-Length: 0
	
06:28:21.701247 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 1299)
    localhost..6060 > localhost..5060: SIP, length: 1271
	INVITE sip:00@192.168.20.40 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport;branch=z9hG4bK403010529
	From: <sip:3@192.168.20.40>;tag=1214697537
	To: <sip:00@192.168.20.40>
	Call-ID: 1450925902
	CSeq: 20 INVITE
	Contact: <sip:3@127.0.0.1:6060>
	Content-Type: application/sdp
	Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,REFER,NOTIFY,INFO,UPDATE,PRACK,SUBSCRIBE
	Max-Forwards: 70
	User-Agent: eXosip/5.3.0
	X-Endpoint-Type: DS
	Allow-Events: conference
	Supported: replaces,timer,100rel
	Content-Length:   768
	
	v=0
	o=gateway 0 18 IN IP4 192.168.20.60
	s=conversation
	c=IN IP4 0.0.0.0
	t=0 0
	m=audio 10004 RTP/SAVP 8 0 4 18 101 13 98
	a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:qy+Mo6UfN7/W7sQrs8fFn+ioWkq+0lqOLLohmXzU
	a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:S0juts/k6k24Adfw8FriOWx0se5VEwoUIPaK+uht
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	a=inactive
	m=audio 10004 RTP/AVP 8 0 4 18 101 13 98
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	a=inactive
06:28:21.728894 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 1457)
    192.168.20.60.5060 > 192.168.20.40.5060: SIP, length: 1429
	INVITE sip:00@192.168.20.40 SIP/2.0
	Via: SIP/2.0/UDP 192.168.20.60:5060;branch=z9hG4bK-524287-1---cb4fb87cf7e2da15;rport
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK403010529
	Max-Forwards: 69
	Record-Route: <sip:192.168.20.60:5060;transport=udp;lr>
	Contact: <sip:3@127.0.0.1:6060>
	To: <sip:00@192.168.20.40>
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 20 INVITE
	Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, INFO, UPDATE, PRACK, SUBSCRIBE
	Content-Type: application/sdp
	Supported: replaces, timer, 100rel
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	X-Endpoint-Type: DS
	Content-Length: 768
	
	v=0
	o=gateway 0 18 IN IP4 192.168.20.60
	s=conversation
	c=IN IP4 0.0.0.0
	t=0 0
	m=audio 10004 RTP/SAVP 8 0 4 18 101 13 98
	a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:qy+Mo6UfN7/W7sQrs8fFn+ioWkq+0lqOLLohmXzU
	a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:S0juts/k6k24Adfw8FriOWx0se5VEwoUIPaK+uht
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	a=inactive
	m=audio 10004 RTP/AVP 8 0 4 18 101 13 98
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	a=inactive
06:28:21.749126 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 504)
    192.168.20.40.5060 > 192.168.20.60.5060: SIP, length: 476
	SIP/2.0 407 Proxy Authentication Required
	Via: SIP/2.0/UDP 192.168.20.60:5060;branch=z9hG4bK-524287-1---cb4fb87cf7e2da15;rport=5060
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK403010529
	Proxy-Authenticate: Digest nonce="8516:da0faed36020f8c94f9235628b7174fd",algorithm=MD5,realm="192.168.20.40",qop="auth,auth-int"
	To: <sip:00@192.168.20.40>;tag=a77b335d
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 20 INVITE
	Content-Length: 0
	
06:28:21.758350 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 307)
    192.168.20.60.5060 > 192.168.20.40.5060: SIP, length: 279
	ACK sip:00@192.168.20.40 SIP/2.0
	Via: SIP/2.0/UDP 192.168.20.60:5060;branch=z9hG4bK-524287-1---cb4fb87cf7e2da15;rport
	Max-Forwards: 70
	To: <sip:00@192.168.20.40>;tag=a77b335d
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 20 ACK
	Content-Length: 0
	
06:28:21.761363 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 413)
    localhost..5060 > localhost..6060: SIP, length: 385
	SIP/2.0 407 Proxy Authentication Required
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK403010529
	Proxy-Authenticate: Digest nonce="8516:da0faed36020f8c94f9235628b7174fd",algorithm=MD5,realm="192.168.20.40",qop="auth,auth-int"
	To: <sip:00@192.168.20.40>;tag=a77b335d
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 20 INVITE
	Content-Length: 0
	
06:28:21.766628 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 266)
    localhost..6060 > localhost..5060: SIP, length: 238
	ACK sip:00@192.168.20.40 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport;branch=z9hG4bK403010529
	From: <sip:3@192.168.20.40>;tag=1214697537
	To: <sip:00@192.168.20.40>;tag=a77b335d
	Call-ID: 1450925902
	CSeq: 20 ACK
	Content-Length: 0
	
06:28:21.778950 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 1542)
    localhost..6060 > localhost..5060: SIP, length: 1514
	INVITE sip:00@192.168.20.40 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport;branch=z9hG4bK1049753513
	From: <sip:3@192.168.20.40>;tag=1214697537
	To: <sip:00@192.168.20.40>
	Call-ID: 1450925902
	CSeq: 21 INVITE
	Contact: <sip:3@127.0.0.1:6060>
	Proxy-Authorization: Digest username="3", realm="192.168.20.40", nonce="8516:da0faed36020f8c94f9235628b7174fd", uri="sip:00@192.168.20.40", response="300a05f46f0229acd5303bf8812e6ef6", algorithm=MD5, cnonce="1820eaae", qop=auth, nc=00000001
	Content-Type: application/sdp
	Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,REFER,NOTIFY,INFO,UPDATE,PRACK,SUBSCRIBE
	Max-Forwards: 70
	User-Agent: eXosip/5.3.0
	X-Endpoint-Type: DS
	Allow-Events: conference
	Supported: replaces,timer,100rel
	Content-Length:   768
	
	v=0
	o=gateway 0 18 IN IP4 192.168.20.60
	s=conversation
	c=IN IP4 0.0.0.0
	t=0 0
	m=audio 10004 RTP/SAVP 8 0 4 18 101 13 98
	a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:qy+Mo6UfN7/W7sQrs8fFn+ioWkq+0lqOLLohmXzU
	a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:S0juts/k6k24Adfw8FriOWx0se5VEwoUIPaK+uht
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	a=inactive
	m=audio 10004 RTP/AVP 8 0 4 18 101 13 98
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	a=inactive
06:28:21.805426 IP (tos 0x0, ttl 64, id 57935, offset 0, flags [+], proto UDP (17), length 1500)
    192.168.20.60.5060 > 192.168.20.40.5060: SIP, length: 1472
	INVITE sip:00@192.168.20.40 SIP/2.0
	Via: SIP/2.0/UDP 192.168.20.60:5060;branch=z9hG4bK-524287-1---d10913283efb6273;rport
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1049753513
	Max-Forwards: 69
	Record-Route: <sip:192.168.20.60:5060;transport=udp;lr>
	Contact: <sip:3@127.0.0.1:6060>
	To: <sip:00@192.168.20.40>
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 21 INVITE
	Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, INFO, UPDATE, PRACK, SUBSCRIBE
	Content-Type: application/sdp
	Proxy-Authorization: Digest username="3",realm="192.168.20.40",nonce="8516:da0faed36020f8c94f9235628b7174fd",uri="sip:00@192.168.20.40",response="300a05f46f0229acd5303bf8812e6ef6",algorithm=MD5,cnonce="1820eaae",qop=auth,nc=00000001
	Supported: replaces, timer, 100rel
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	X-Endpoint-Type: DS
	Content-Length: 768
	
	v=0
	o=gateway 0 18 IN IP4 192.168.20.60
	s=conversation
	c=IN IP4 0.0.0.0
	t=0 0
	m=audio 10004 RTP/SAVP 8 0 4 18 101 13 98
	a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:qy+Mo6UfN7/W7sQrs8fFn+ioWkq+0lqOLLohmXzU
	a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:S0juts/k6k24Adfw8FriOWx0se5VEwoUIPaK+uht
	a=rtpmap:8 PCMA/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:4 G723/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=rtpmap:13 CN/8000
	a=rtpmap:98 PCMA/8000
	a=gpmd:98 vbd=yes
	a=inactive
	m=audio 10004 RTP/AVP 8 0 4 18 101 13 98
	a=rtpmap:8 PCMA/8000
	a=[!sip]
06:28:21.892945 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 248)
    localhost..5060 > localhost..6060: SIP, length: 220
	SIP/2.0 100 Trying
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1049753513
	To: <sip:00@192.168.20.40>
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 21 INVITE
	Content-Length: 0
	
06:28:21.902113 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 339)
    192.168.20.40.5060 > 192.168.20.60.5060: SIP, length: 311
	SIP/2.0 100 Trying
	Via: SIP/2.0/UDP 192.168.20.60:5060;branch=z9hG4bK-524287-1---d10913283efb6273;rport=5060
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1049753513
	To: <sip:00@192.168.20.40>
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 21 INVITE
	Content-Length: 0
	
06:28:21.912124 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 548)
    192.168.20.40.5060 > 192.168.20.60.5060: SIP, length: 520
	SIP/2.0 480 Temporarily Unavailable
	Via: SIP/2.0/UDP 192.168.20.60:5060;branch=z9hG4bK-524287-1---d10913283efb6273;rport=5060
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1049753513
	To: <sip:00@192.168.20.40>;tag=1848537065
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 21 INVITE
	Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, INFO, UPDATE, PRACK, SUBSCRIBE
	Supported: replaces, timer, 100rel
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	Content-Length: 0
	
06:28:21.930193 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 309)
    192.168.20.60.5060 > 192.168.20.40.5060: SIP, length: 281
	ACK sip:00@192.168.20.40 SIP/2.0
	Via: SIP/2.0/UDP 192.168.20.60:5060;branch=z9hG4bK-524287-1---d10913283efb6273;rport
	Max-Forwards: 70
	To: <sip:00@192.168.20.40>;tag=1848537065
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 21 ACK
	Content-Length: 0
	
06:28:21.930483 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 457)
    localhost..5060 > localhost..6060: SIP, length: 429
	SIP/2.0 480 Temporarily Unavailable
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK1049753513
	To: <sip:00@192.168.20.40>;tag=1848537065
	From: <sip:3@192.168.20.40>;tag=1214697537
	Call-ID: 1450925902
	CSeq: 21 INVITE
	Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, REFER, NOTIFY, INFO, UPDATE, PRACK, SUBSCRIBE
	Supported: replaces, timer, 100rel
	User-Agent: eXosip/5.3.0
	Allow-Events: conference
	Content-Length: 0
	
06:28:21.935160 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 511)
    localhost..6060 > localhost..5060: SIP, length: 483
	ACK sip:00@192.168.20.40 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport;branch=z9hG4bK1049753513
	From: <sip:3@192.168.20.40>;tag=1214697537
	To: <sip:00@192.168.20.40>;tag=1848537065
	Call-ID: 1450925902
	CSeq: 21 ACK
	Proxy-Authorization: Digest username="3", realm="192.168.20.40", nonce="8516:da0faed36020f8c94f9235628b7174fd", uri="sip:00@192.168.20.40", response="300a05f46f0229acd5303bf8812e6ef6", algorithm=MD5, cnonce="1820eaae", qop=auth, nc=00000001
	Content-Length: 0
	
06:28:21.950780 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 365)
    localhost..6060 > localhost..5060: SIP, length: 337
	BYE sip:op3@127.0.0.1:6060 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport;branch=z9hG4bK632651689
	Route: <sip:192.168.20.60:5060;transport=udp;lr>
	From: <sip:00@192.168.20.40>;tag=554232430
	To: <sip:op3@192.168.20.60>;tag=1817180611
	Call-ID: 1027022968
	CSeq: 22 BYE
	Max-Forwards: 70
	User-Agent: eXosip/5.3.0
	Content-Length: 0
	
06:28:21.975679 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 402)
    localhost..5060 > localhost..6060: SIP, length: 374
	BYE sip:op3@127.0.0.1:6060 SIP/2.0
	Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-524287-1---754f66774ef05a74;rport
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK632651689
	Max-Forwards: 69
	To: <sip:op3@192.168.20.60>;tag=1817180611
	From: <sip:00@192.168.20.40>;tag=554232430
	Call-ID: 1027022968
	CSeq: 22 BYE
	User-Agent: eXosip/5.3.0
	Content-Length: 0
	
06:28:21.980729 IP (tos 0x68, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 369)
    localhost..6060 > localhost..5060: SIP, length: 341
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-524287-1---754f66774ef05a74;rport=5060
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK632651689
	From: <sip:00@192.168.20.40>;tag=554232430
	To: <sip:op3@192.168.20.60>;tag=1817180611
	Call-ID: 1027022968
	CSeq: 22 BYE
	User-Agent: eXosip/5.3.0
	Content-Length: 0
	
06:28:21.990232 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto UDP (17), length 282)
    localhost..5060 > localhost..6060: SIP, length: 254
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 127.0.0.1:6060;rport=6060;branch=z9hG4bK632651689
	To: <sip:op3@192.168.20.60>;tag=1817180611
	From: <sip:00@192.168.20.40>;tag=554232430
	Call-ID: 1027022968
	CSeq: 22 BYE
	User-Agent: eXosip/5.3.0
	Content-Length: 0