17:49:54.260220 IP (tos 0x68, ttl 62, id 4586, offset 0, flags [none], proto UDP (17), length 908)
    1.2.10.40.16060 > asterisk.5060: [udp sum ok] SIP, length: 880
	INVITE sip:555@1.2.3.15 SIP/2.0
	Via: SIP/2.0/UDP 192.168.15.204:16060;branch=z9hG4bK-7b152889
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>
	Remote-Party-ID: "Test 540" <sip:test540@1.2.3.15>;screen=yes;party=calling
	Call-ID: ad173655-db659339@192.168.15.204
	CSeq: 101 INVITE
	Max-Forwards: 70
	Contact: "Test 540" <sip:test540@192.168.15.204:16060>
	Expires: 240
	User-Agent: Cisco/SPA508G-7.6.2f
	Content-Length: 261
	Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER, UPDATE, MESSAGE
	Supported: replaces
	Content-Type: application/sdp
	
	v=0
	o=- 305931 305931 IN IP4 192.168.15.204
	s=-
	c=IN IP4 192.168.15.204
	t=0 0
	m=audio 16424 RTP/AVP 9 0 18 101
	a=rtpmap:9 G722/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:18 G729a/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=ptime:30
	a=sendrecv
17:49:54.264760 IP (tos 0x0, ttl 64, id 54108, offset 0, flags [DF], proto UDP (17), length 522)
    asterisk.5060 > 1.2.10.40.16060: [bad udp cksum 0xd0fb -> 0xcebc!] SIP, length: 494
	SIP/2.0 401 Unauthorized
	Via: SIP/2.0/UDP 192.168.15.204:16060;rport=16060;received=1.2.10.40;branch=z9hG4bK-7b152889
	Call-ID: ad173655-db659339@192.168.15.204
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>;tag=z9hG4bK-7b152889
	CSeq: 101 INVITE
	WWW-Authenticate: Digest realm="asterisk",nonce="1588628994/f02d81dd88728a6d73a0f64c5f7e5a06",opaque="279ba535614f4b36",algorithm=md5,qop="auth"
	Server: Asterisk PBX
	Content-Length:  0
	
17:49:54.274130 IP (tos 0x68, ttl 62, id 4587, offset 0, flags [none], proto UDP (17), length 432)
    1.2.10.40.16060 > asterisk.5060: [udp sum ok] SIP, length: 404
	ACK sip:555@1.2.3.15 SIP/2.0
	Via: SIP/2.0/UDP 192.168.15.204:16060;branch=z9hG4bK-7b152889
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>;tag=z9hG4bK-7b152889
	Call-ID: ad173655-db659339@192.168.15.204
	CSeq: 101 ACK
	Max-Forwards: 70
	Contact: "Test 540" <sip:test540@192.168.15.204:16060>
	User-Agent: Cisco/SPA508G-7.6.2f
	Content-Length: 0
	
17:49:54.278357 IP (tos 0x68, ttl 62, id 4588, offset 0, flags [none], proto UDP (17), length 1170)
    1.2.10.40.16060 > asterisk.5060: [udp sum ok] SIP, length: 1142
	INVITE sip:555@1.2.3.15 SIP/2.0
	Via: SIP/2.0/UDP 192.168.15.204:16060;branch=z9hG4bK-d013f7ed
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>
	Remote-Party-ID: "Test 540" <sip:test540@1.2.3.15>;screen=yes;party=calling
	Call-ID: ad173655-db659339@192.168.15.204
	CSeq: 102 INVITE
	Max-Forwards: 70
	Authorization: Digest username="test540",realm="asterisk",nonce="1588628994/f02d81dd88728a6d73a0f64c5f7e5a06",uri="sip:555@1.2.3.15",algorithm=MD5,response="a54c25fc7c8624589148a1e564a5fc34",opaque="279ba535614f4b36",qop=auth,nc=00000001,cnonce="920b2696"
	Contact: "Test 540" <sip:test540@192.168.15.204:16060>
	Expires: 240
	User-Agent: Cisco/SPA508G-7.6.2f
	Content-Length: 261
	Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER, UPDATE, MESSAGE
	Supported: replaces
	Content-Type: application/sdp
	
	v=0
	o=- 305931 305931 IN IP4 192.168.15.204
	s=-
	c=IN IP4 192.168.15.204
	t=0 0
	m=audio 16424 RTP/AVP 9 0 18 101
	a=rtpmap:9 G722/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:18 G729a/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-15
	a=ptime:30
	a=sendrecv
17:49:54.282910 IP (tos 0x0, ttl 64, id 54109, offset 0, flags [DF], proto UDP (17), length 349)
    asterisk.5060 > 1.2.10.40.16060: [bad udp cksum 0xd04e -> 0xb853!] SIP, length: 321
	SIP/2.0 100 Trying
	Via: SIP/2.0/UDP 192.168.15.204:16060;rport=16060;received=1.2.10.40;branch=z9hG4bK-d013f7ed
	Call-ID: ad173655-db659339@192.168.15.204
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>
	CSeq: 102 INVITE
	Server: Asterisk PBX
	Content-Length:  0
	
17:49:54.284344 IP (tos 0x0, ttl 64, id 54110, offset 0, flags [DF], proto UDP (17), length 861)
    asterisk.5060 > 1.2.10.40.16060: [bad udp cksum 0xd24e -> 0xff48!] SIP, length: 833
	SIP/2.0 183 Session Progress
	Via: SIP/2.0/UDP 192.168.15.204:16060;rport=16060;received=1.2.10.40;branch=z9hG4bK-d013f7ed
	Call-ID: ad173655-db659339@192.168.15.204
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>;tag=323071ec-8037-4cf5-9003-9ed7c02a0254
	CSeq: 102 INVITE
	Server: Asterisk PBX
	Contact: <sip:1.2.3.15:5060>
	Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE
	Content-Type: application/sdp
	Content-Length:   281
	
	v=0
	o=- 305931 305933 IN IP4 1.2.3.15
	s=Asterisk
	c=IN IP4 1.2.3.15
	t=0 0
	m=audio 14534 RTP/AVP 9 18 0 101
	a=rtpmap:9 G722/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-16
	a=ptime:20
	a=maxptime:150
	a=sendrecv
17:49:54.296527 IP (tos 0x0, ttl 64, id 54112, offset 0, flags [DF], proto UDP (17), length 1077)
    asterisk.5060 > 1.2.10.40.sip: [bad udp cksum 0xd326 -> 0x197b!] SIP, length: 1049
	INVITE sip:test555@1.2.10.40:5060;x-ast-orig-host=192.168.15.221:5060 SIP/2.0
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjc885f38b-50e5-4825-a8f5-9414ca0db2be
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>
	Contact: <sip:asterisk@1.2.3.15:5060>
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	CSeq: 6772 INVITE
	Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE
	Supported: 100rel, timer, replaces, norefersub
	Session-Expires: 1800
	Min-SE: 90
	Max-Forwards: 70
	User-Agent: Asterisk PBX
	Content-Type: application/sdp
	Content-Length:   289
	
	v=0
	o=- 1248887589 1248887589 IN IP4 1.2.3.15
	s=Asterisk
	c=IN IP4 1.2.3.15
	t=0 0
	m=audio 17330 RTP/AVP 9 18 0 101
	a=rtpmap:9 G722/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-16
	a=ptime:20
	a=maxptime:150
	a=sendrecv
17:49:54.384667 IP (tos 0xb0, ttl 62, id 31518, offset 0, flags [none], proto UDP (17), length 567)
    1.2.10.40.sip > asterisk.5060: [udp sum ok] SIP, length: 539
	SIP/2.0 100 Trying
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjc885f38b-50e5-4825-a8f5-9414ca0db2be
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: "Test 555" <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	CSeq: 6772 INVITE
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	Contact: <sip:test555@192.168.15.221:5060>
	User-Agent: PolycomRealPresenceTrio-Trio_8800-UA/5.9.3.7982
	Accept-Language: en
	Content-Length: 0
	
17:49:54.385206 IP (tos 0xb0, ttl 62, id 31519, offset 0, flags [none], proto UDP (17), length 633)
    1.2.10.40.sip > asterisk.5060: [udp sum ok] SIP, length: 605
	SIP/2.0 180 Ringing
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjc885f38b-50e5-4825-a8f5-9414ca0db2be
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: "Test 555" <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	CSeq: 6772 INVITE
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	Contact: <sip:test555@192.168.15.221:5060>
	User-Agent: PolycomRealPresenceTrio-Trio_8800-UA/5.9.3.7982
	Allow-Events: conference,talk,hold
	Accept-Language: en
	Require: 100rel
	RSeq: 8193
	Content-Length: 0
	
17:49:54.385695 IP (tos 0x0, ttl 64, id 54121, offset 0, flags [DF], proto UDP (17), length 523)
    asterisk.5060 > 1.2.10.40.sip: [bad udp cksum 0xd0fc -> 0x2a89!] SIP, length: 495
	PRACK sip:test555@1.2.10.40:5060 SIP/2.0
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjfb2dff10-674a-44dc-a8f5-16f426bfc29f
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	CSeq: 6773 PRACK
	RAck: 8193 6772 INVITE
	Max-Forwards: 70
	User-Agent: Asterisk PBX
	Content-Length:  0
	
17:49:54.385875 IP (tos 0x0, ttl 64, id 54122, offset 0, flags [DF], proto UDP (17), length 861)
    asterisk.5060 > 1.2.10.40.16060: [bad udp cksum 0xd24e -> 0xf552!] SIP, length: 833
	SIP/2.0 183 Session Progress
	Via: SIP/2.0/UDP 192.168.15.204:16060;rport=16060;received=1.2.10.40;branch=z9hG4bK-d013f7ed
	Call-ID: ad173655-db659339@192.168.15.204
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>;tag=323071ec-8037-4cf5-9003-9ed7c02a0254
	CSeq: 102 INVITE
	Server: Asterisk PBX
	Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE
	Contact: <sip:1.2.3.15:5060>
	Content-Type: application/sdp
	Content-Length:   281
	
	v=0
	o=- 305931 305933 IN IP4 1.2.3.15
	s=Asterisk
	c=IN IP4 1.2.3.15
	t=0 0
	m=audio 14534 RTP/AVP 9 18 0 101
	a=rtpmap:9 G722/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-16
	a=ptime:20
	a=maxptime:150
	a=sendrecv
17:49:54.398934 IP (tos 0xb0, ttl 62, id 31520, offset 0, flags [none], proto UDP (17), length 562)
    1.2.10.40.sip > asterisk.5060: [udp sum ok] SIP, length: 534
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjfb2dff10-674a-44dc-a8f5-16f426bfc29f
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: "Test 555" <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	CSeq: 6773 PRACK
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	Contact: <sip:test555@192.168.15.221:5060>
	User-Agent: PolycomRealPresenceTrio-Trio_8800-UA/5.9.3.7982
	Accept-Language: en
	Content-Length: 0
	
17:49:56.306783 IP (tos 0xb0, ttl 62, id 31521, offset 0, flags [none], proto UDP (17), length 1016)
    1.2.10.40.sip > asterisk.5060: [udp sum ok] SIP, length: 988
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjc885f38b-50e5-4825-a8f5-9414ca0db2be
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: "Test 555" <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	CSeq: 6772 INVITE
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	Contact: <sip:test555@192.168.15.221:5060>
	Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,INFO,MESSAGE,SUBSCRIBE,NOTIFY,PRACK,UPDATE,REFER
	Supported: replaces,timer,100rel
	User-Agent: PolycomRealPresenceTrio-Trio_8800-UA/5.9.3.7982
	Allow-Events: conference,talk,hold
	Accept-Language: en
	Session-Expires: 1800;refresher=uas
	Content-Type: application/sdp
	Content-Length: 226
	
	v=0
	o=- 1588628995 1588628995 IN IP4 192.168.15.221
	s=Polycom IP Phone
	c=IN IP4 192.168.15.221
	b=AS:2048
	t=0 0
	a=sendrecv
	m=audio 2256 RTP/AVP 9 101
	a=rtpmap:9 G722/8000
	a=rtpmap:101 telephone-event/8000
	a=sendrecv
17:49:56.307490 IP (tos 0x0, ttl 64, id 54264, offset 0, flags [DF], proto UDP (17), length 895)
    asterisk.5060 > 1.2.10.40.16060: [bad udp cksum 0xd270 -> 0x83a4!] SIP, length: 867
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 192.168.15.204:16060;rport=16060;received=1.2.10.40;branch=z9hG4bK-d013f7ed
	Call-ID: ad173655-db659339@192.168.15.204
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>;tag=323071ec-8037-4cf5-9003-9ed7c02a0254
	CSeq: 102 INVITE
	Server: Asterisk PBX
	Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE
	Contact: <sip:1.2.3.15:5060>
	Supported: 100rel, timer, replaces, norefersub
	Content-Type: application/sdp
	Content-Length:   281
	
	v=0
	o=- 305931 305933 IN IP4 1.2.3.15
	s=Asterisk
	c=IN IP4 1.2.3.15
	t=0 0
	m=audio 14534 RTP/AVP 9 18 0 101
	a=rtpmap:9 G722/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-16
	a=ptime:20
	a=maxptime:150
	a=sendrecv
17:49:56.307494 IP (tos 0x0, ttl 64, id 54265, offset 0, flags [DF], proto UDP (17), length 495)
    asterisk.5060 > 1.2.10.40.sip: [bad udp cksum 0xd0e0 -> 0xb0f9!] SIP, length: 467
	ACK sip:test555@1.2.10.40:5060 SIP/2.0
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPjabd5d53e-074a-4d60-ab4b-267ffa74b0ad
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	CSeq: 6772 ACK
	Max-Forwards: 70
	User-Agent: Asterisk PBX
	Content-Length:  0
	
17:49:56.308398 IP (tos 0x0, ttl 64, id 54266, offset 0, flags [DF], proto UDP (17), length 1076)
    asterisk.5060 > 1.2.10.40.sip: [bad udp cksum 0xd325 -> 0x15ba!] SIP, length: 1048
	INVITE sip:test555@1.2.10.40:5060 SIP/2.0
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj7bbd3afb-76c5-47d7-a104-bafb93b5aeb0
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	Contact: <sip:asterisk@1.2.3.15:5060>
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	CSeq: 6774 INVITE
	Allow: OPTIONS, REGISTER, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE, PRACK, REFER, MESSAGE
	Supported: 100rel, timer, replaces, norefersub
	Session-Expires: 1800;refresher=uas
	Min-SE: 90
	Max-Forwards: 70
	User-Agent: Asterisk PBX
	Content-Type: application/sdp
	Content-Length:   289
	
	v=0
	o=- 1248887589 1248887590 IN IP4 1.2.3.15
	s=Asterisk
	c=IN IP4 1.2.3.15
	t=0 0
	m=audio 17330 RTP/AVP 9 18 0 101
	a=rtpmap:9 G722/8000
	a=rtpmap:18 G729/8000
	a=rtpmap:0 PCMU/8000
	a=rtpmap:101 telephone-event/8000
	a=fmtp:101 0-16
	a=ptime:20
	a=maxptime:150
	a=sendrecv
17:49:56.332111 IP (tos 0x68, ttl 62, id 4693, offset 0, flags [none], proto UDP (17), length 715)
    1.2.10.40.16060 > asterisk.5060: [udp sum ok] SIP, length: 687
	ACK sip:1.2.3.15:5060 SIP/2.0
	Via: SIP/2.0/UDP 192.168.15.204:16060;branch=z9hG4bK-318dc8fe
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>;tag=323071ec-8037-4cf5-9003-9ed7c02a0254
	Call-ID: ad173655-db659339@192.168.15.204
	CSeq: 102 ACK
	Max-Forwards: 70
	Authorization: Digest username="test540",realm="asterisk",nonce="1588628994/f02d81dd88728a6d73a0f64c5f7e5a06",uri="sip:555@1.2.3.15",algorithm=MD5,response="a54c25fc7c8624589148a1e564a5fc34",opaque="279ba535614f4b36",qop=auth,nc=00000001,cnonce="920b2696"
	Contact: "Test 540" <sip:test540@192.168.15.204:16060>
	User-Agent: Cisco/SPA508G-7.6.2f
	Content-Length: 0
	
17:49:56.341855 IP (tos 0xb0, ttl 62, id 31522, offset 0, flags [none], proto UDP (17), length 1016)
    1.2.10.40.sip > asterisk.5060: [udp sum ok] SIP, length: 988
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj7bbd3afb-76c5-47d7-a104-bafb93b5aeb0
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: "Test 555" <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	CSeq: 6774 INVITE
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	Contact: <sip:test555@192.168.15.221:5060>
	Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,INFO,MESSAGE,SUBSCRIBE,NOTIFY,PRACK,UPDATE,REFER
	Supported: replaces,timer,100rel
	User-Agent: PolycomRealPresenceTrio-Trio_8800-UA/5.9.3.7982
	Allow-Events: conference,talk,hold
	Accept-Language: en
	Session-Expires: 1800;refresher=uas
	Content-Type: application/sdp
	Content-Length: 226
	
	v=0
	o=- 1588628995 1588628996 IN IP4 192.168.15.221
	s=Polycom IP Phone
	c=IN IP4 192.168.15.221
	b=AS:2048
	t=0 0
	a=sendrecv
	m=audio 2256 RTP/AVP 9 101
	a=rtpmap:9 G722/8000
	a=rtpmap:101 telephone-event/8000
	a=sendrecv
17:49:56.342378 IP (tos 0x0, ttl 64, id 54269, offset 0, flags [DF], proto UDP (17), length 495)
    asterisk.5060 > 1.2.10.40.sip: [bad udp cksum 0xd0e0 -> 0x7fa4!] SIP, length: 467
	ACK sip:test555@1.2.10.40:5060 SIP/2.0
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj3bd54b43-7ba9-4386-85d8-facb7b4d41e0
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	CSeq: 6774 ACK
	Max-Forwards: 70
	User-Agent: Asterisk PBX
	Content-Length:  0
	
17:49:58.063683 IP (tos 0x68, ttl 62, id 4779, offset 0, flags [none], proto UDP (17), length 660)
    1.2.10.40.16060 > asterisk.5060: [udp sum ok] SIP, length: 632
	BYE sip:1.2.3.15:5060 SIP/2.0
	Via: SIP/2.0/UDP 192.168.15.204:16060;branch=z9hG4bK-fa577a20
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>;tag=323071ec-8037-4cf5-9003-9ed7c02a0254
	Call-ID: ad173655-db659339@192.168.15.204
	CSeq: 103 BYE
	Max-Forwards: 70
	Authorization: Digest username="test540",realm="asterisk",nonce="1588628994/f02d81dd88728a6d73a0f64c5f7e5a06",uri="sip:1.2.3.15:5060",algorithm=MD5,response="fe9c0d3b0d08ebe170a50776efdf50e8",opaque="279ba535614f4b36",qop=auth,nc=00000002,cnonce="920b2696"
	User-Agent: Cisco/SPA508G-7.6.2f
	Content-Length: 0
	
17:49:58.064059 IP (tos 0x0, ttl 64, id 54479, offset 0, flags [DF], proto UDP (17), length 383)
    asterisk.5060 > 1.2.10.40.16060: [bad udp cksum 0xd070 -> 0x095e!] SIP, length: 355
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 192.168.15.204:16060;rport=16060;received=1.2.10.40;branch=z9hG4bK-fa577a20
	Call-ID: ad173655-db659339@192.168.15.204
	From: "Test 540" <sip:test540@1.2.3.15>;tag=c0de3ba581e1ce29o0
	To: <sip:555@1.2.3.15>;tag=323071ec-8037-4cf5-9003-9ed7c02a0254
	CSeq: 103 BYE
	Server: Asterisk PBX
	Content-Length:  0
	
17:49:58.064948 IP (tos 0x0, ttl 64, id 54480, offset 0, flags [DF], proto UDP (17), length 519)
    asterisk.5060 > 1.2.10.40.sip: [bad udp cksum 0xd0f8 -> 0xb973!] SIP, length: 491
	BYE sip:test555@1.2.10.40:5060 SIP/2.0
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj630211a9-79e9-4473-bacb-42b1aebfa400
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	CSeq: 6775 BYE
	Reason: Q.850;cause=16
	Max-Forwards: 70
	User-Agent: Asterisk PBX
	Content-Length:  0
	
17:49:58.078372 IP (tos 0xb0, ttl 62, id 31523, offset 0, flags [none], proto UDP (17), length 560)
    1.2.10.40.sip > asterisk.5060: [udp sum ok] SIP, length: 532
	SIP/2.0 200 OK
	Via: SIP/2.0/UDP 1.2.3.15:5060;rport;branch=z9hG4bKPj630211a9-79e9-4473-bacb-42b1aebfa400
	From: "Test 540" <sip:test540@1.2.3.15>;tag=5b199690-dcb5-4250-899c-44f4340d41a6
	To: "Test 555" <sip:test555@1.2.10.40;x-ast-orig-host=192.168.15.221:5060>;tag=C20F4F3-DFC458A3
	CSeq: 6775 BYE
	Call-ID: 9d212482-ab23-42b2-b9ce-e78304cfaae1
	Contact: <sip:test555@192.168.15.221:5060>
	User-Agent: PolycomRealPresenceTrio-Trio_8800-UA/5.9.3.7982
	Accept-Language: en
	Content-Length: 0