Axon 1.31 bug on sip commands relay

Masterpiece · February 25, 2008

Axon 1.31 + Linksys SPA2102 (5.1.12)

1) Axon sends "408 Request Timeout" to remote host, after receives "488 Not Acceptable Here" from local host.

When remote SIP host detects FAX call, it tryes to reinvite to T.38 protocol, after that AXON sends "Invite" to Linksys SPA-2102 and gets "488 Not Acceptable Here" answer (because T.38 is disabled on Linksys, as it is not correctly supported on all SIP hosts), than it for unknown reason sends "408 Request Timeout" to remote SIP host and session ends. Why it sends "408" but not "488" ???

03:28:48 NAT Keep Alive Packet Sent to stun01.sipphone.com
03:29:01 NAT Keep Alive Packet Sent to sipnet.ru
03:29:01 NAT Keep Alive Packet Sent to sipnet.ru
03:29:04 UDP Packet Received from 192.168.193.200:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
INVITE sip:849974xxxxxx@192.168.192.100 SIP/2.0
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-78b75367
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
To: <sip:849974xxxxxx@192.168.192.100>
Remote-Party-ID: 101 <sip:101@192.168.192.100>;screen=yes;party=calling
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 101 INVITE
Max-Forwards: 70
Contact: 101 <sip:101@192.168.193.200:5060>
Expires: 240
User-Agent: Linksys/SPA2102-5.1.12
Content-Length: 211
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: x-sipura, replaces
Content-Type: application/sdp

v=0
o=- 131740 131740 IN IP4 192.168.193.200
s=-
c=IN IP4 192.168.193.200
t=0 0
m=audio 8000 RTP/AVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:30
a=sendrecv

----------------------------------------------------------------

03:29:04 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-78b75367
To: <sip:849974xxxxxx@192.168.192.100>
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 101 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Proxy-Authenticate: Digest realm="axon@core",nonce="v21250qaq13264w",opaque="",stale=FALSE,algorithm=MD5
Content-Length: 0


----------------------------------------------------------------

03:29:04 UDP Packet Received from 192.168.193.200:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
ACK sip:849974xxxxxx@192.168.192.100 SIP/2.0
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-78b75367
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
To: <sip:849974xxxxxx@192.168.192.100>
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 101 ACK
Max-Forwards: 70
Contact: 101 <sip:101@192.168.193.200:5060>
User-Agent: Linksys/SPA2102-5.1.12
Content-Length: 0


----------------------------------------------------------------

03:29:04 UDP Packet Received from 192.168.193.200:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
INVITE sip:849974xxxxxx@192.168.192.100 SIP/2.0
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-505495b
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
To: <sip:849974xxxxxx@192.168.192.100>
Remote-Party-ID: 101 <sip:101@192.168.192.100>;screen=yes;party=calling
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 INVITE
Max-Forwards: 70
Proxy-Authorization: Digest username="101",realm="axon@core",nonce="v21250qaq13264w",uri="sip:849974xxxxxx@192.168.192.100",
algorithm=MD5,response="af6bfff1641e78164a7cc2e1f30f1c5f",opaque=""
Contact: 101 <sip:101@192.168.193.200:5060>
Expires: 240
User-Agent: Linksys/SPA2102-5.1.12
Content-Length: 211
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: x-sipura, replaces
Content-Type: application/sdp

v=0
o=- 131740 131740 IN IP4 192.168.193.200
s=-
c=IN IP4 192.168.193.200
t=0 0
m=audio 8000 RTP/AVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:30
a=sendrecv

----------------------------------------------------------------

03:29:04 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-505495b
To: <sip:849974xxxxxx@192.168.192.100>;tag=8095
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:04 UDP Packet Sent to 213.85.168.52:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
INVITE sip:849974xxxxxx@qwerty.cnt.ru SIP/2.0
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport;branch=z9hG4bK17811236
To: <sip:849974xxxxxx@qwerty.cnt.ru>
From: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 797 INVITE
Max-Forwards: 69
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Contact: <sip:8499502xxxx@77.xx.xx.10:5060>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, INFO, REFER, NOTIFY
Supported: replaces
Content-Type: application/sdp
Content-Length: 263

v=0
o=- 131740 131740 IN IP4 192.168.193.200
s=-
c=IN IP4 77.xx.xx.10
t=0 0
m=audio 8000 RTP/AVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:30
a=sendrecv
a=domain:77.xx.xx.10
a=local:192.168.192.100 8000

----------------------------------------------------------------

03:29:04 UDP Packet Received from 213.85.168.52:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 77.xx.xx.10:5060;received=77.xx.xx.10;branch=z9hG4bK17811236;rport=5060
To: <sip:849974xxxxxx@qwerty.cnt.ru>
From: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 797 INVITE


----------------------------------------------------------------

03:29:04 UDP Packet Received from 213.85.168.52:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 77.xx.xx.10:5060;received=77.xx.xx.10;branch=z9hG4bK17811236;rport=5060
To: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
From: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 797 INVITE
Allow: ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,UPDATE,NOTIFY
Supported: 
Contact: <sip:849974xxxxxx@213.85.168.52:5060;transport=udp>
Remote-Party-ID: <sip:849974xxxxxx@213.85.168.66;user=phone>;screen=yes;party=called;privacy=off;id-type=subscriber
Content-Type: application/sdp
Content-Length: 352

v=0
o=BroadWorks 119131937 1 IN IP4 213.85.168.52
s=-
c=IN IP4 213.85.168.52
t=0 0
m=audio 20606 RTP/AVP 8 101 100
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=rtpmap:100 X-NSE/8000
a=fmtp:100 200-202
a=X-sqn:0
a=X-cap: 1 audio RTP/AVP 100
a=X-cpar: a=rtpmap:100 X-NSE/8000
a=X-cpar: a=fmtp:100 200-202
a=X-cap: 2 image udptl t38

----------------------------------------------------------------

03:29:04 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-505495b
To: <sip:849974xxxxxx@192.168.192.100>;tag=8095
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:06 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-505495b
To: <sip:849974xxxxxx@192.168.192.100>;tag=8095
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:08 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-505495b
To: <sip:849974xxxxxx@192.168.192.100>;tag=8095
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:10 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-505495b
To: <sip:849974xxxxxx@192.168.192.100>;tag=8095
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:12 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-505495b
To: <sip:849974xxxxxx@192.168.192.100>;tag=8095
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:14 UDP Packet Received from 213.85.168.52:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SIP/2.0 200 OK
Via: SIP/2.0/UDP 77.xx.xx.10:5060;received=77.xx.xx.10;branch=z9hG4bK17811236;rport=5060
To: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
From: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 797 INVITE
Allow: ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,UPDATE,NOTIFY
Supported: 
Accept: multipart/mixed,application/media_control+xml,application/sdp
Contact: <sip:849974xxxxxx@213.85.168.52:5060;transport=udp>
Remote-Party-ID: <sip:849974xxxxxx@213.85.168.66;user=phone>;screen=yes;party=called;privacy=off;id-type=subscriber
Content-Type: application/sdp
Content-Length: 352

v=0
o=BroadWorks 119131937 1 IN IP4 213.85.168.52
s=-
c=IN IP4 213.85.168.52
t=0 0
m=audio 20606 RTP/AVP 8 101 100
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=rtpmap:100 X-NSE/8000
a=fmtp:100 200-202
a=X-sqn:0
a=X-cap: 1 audio RTP/AVP 100
a=X-cpar: a=rtpmap:100 X-NSE/8000
a=X-cpar: a=fmtp:100 200-202
a=X-cap: 2 image udptl t38

----------------------------------------------------------------

03:29:14 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-505495b
To: <sip:849974xxxxxx@192.168.192.100>;tag=8095
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Contact: <sip:849974xxxxxx@192.168.192.100:5060>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY
Accept: application/sdp
Supported: replaces
Content-Type: application/sdp
Content-Length: 349

v=0
o=BroadWorks 119131937 1 IN IP4 213.85.168.52
s=-
c=IN IP4 192.168.192.100
t=0 0
m=audio 8002 RTP/AVP 8 101
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=rtpmap:100 X-NSE/8000
a=fmtp:100 200-202
a=X-sqn:0
a=X-cap: 1 audio RTP/AVP 100
a=X-cpar: a=rtpmap:100 X-NSE/8000
a=X-cpar: a=fmtp:100 200-202
a=X-cap: 2 image udptl t38

----------------------------------------------------------------

03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-505495b
To: <sip:849974xxxxxx@192.168.192.100>;tag=8095
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Contact: <sip:849974xxxxxx@192.168.192.100:5060>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY
Accept: application/sdp
Supported: replaces
Content-Type: application/sdp
Content-Length: 349

v=0
o=BroadWorks 119131937 1 IN IP4 213.85.168.52
s=-
c=IN IP4 192.168.192.100
t=0 0
m=audio 8002 RTP/AVP 8 101
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=rtpmap:100 X-NSE/8000
a=fmtp:100 200-202
a=X-sqn:0
a=X-cap: 1 audio RTP/AVP 100
a=X-cpar: a=rtpmap:100 X-NSE/8000
a=X-cpar: a=fmtp:100 200-202
a=X-cap: 2 image udptl t38

----------------------------------------------------------------

03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 UDP Packet Received from 192.168.193.200:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
ACK sip:849974xxxxxx@192.168.192.100:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.193.200:5060;branch=z9hG4bK-869987a5
From: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
To: <sip:849974xxxxxx@192.168.192.100>;tag=8095
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 102 ACK
Max-Forwards: 70
Proxy-Authorization: Digest username="101",realm="axon@core",nonce="v21250qaq13264w",uri="sip:849974xxxxxx@192.168.192.100",
algorithm=MD5,response="af6bfff1641e78164a7cc2e1f30f1c5f",opaque=""
Contact: 101 <sip:101@192.168.193.200:5060>
User-Agent: Linksys/SPA2102-5.1.12
Content-Length: 0


----------------------------------------------------------------

03:29:14 UDP Packet Sent to 213.85.168.52:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
ACK sip:849974xxxxxx@213.85.168.52:5060;transport=udp SIP/2.0
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport;branch=z9hG4bK17821236
To: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
From: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 797 ACK
Max-Forwards: 20
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:14 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)

..........

03:29:20 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:20 Rtp Relay 192.168.193.200:8000 >>> 213.85.168.52:20606 (252 bytes)
03:29:20 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:20 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:20 Rtp Relay 192.168.193.200:8000 >>> 213.85.168.52:20606 (252 bytes)
03:29:20 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (172 bytes)
03:29:21 Rtp Relay 213.85.168.52:20606 >>> 192.168.193.200:8000 (6 bytes)
03:29:21 Rtp Relay 192.168.193.200:8000 >>> 213.85.168.52:20606 (252 bytes)
03:29:21 UDP Packet Received from 213.85.168.52:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
INVITE sip:8499502xxxx@77.xx.xx.10:5060 SIP/2.0
Via: SIP/2.0/UDP 213.85.168.52:5060;branch=z9hG4bKf7b38430bgohfc4h37g0sb19mffl3.1
From: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
To: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 567932906 INVITE
Contact: <sip:849974xxxxxx@213.85.168.52:5060;transport=udp>
Allow: ACK,BYE,CANCEL,INFO,INVITE,OPTIONS,PRACK,REFER,UPDATE,NOTIFY
Supported: 
Accept: multipart/mixed,application/media_control+xml,application/sdp
Max-Forwards: 9
Content-Type: application/sdp
Content-Length: 247

v=0
o=BroadWorks 119131937 2 IN IP4 213.85.168.52
s=-
c=IN IP4 213.85.168.52
t=0 0
m=image 20606 udptl t38
a=X-sqn:0
a=X-cap: 1 audio RTP/AVP 100
a=X-cpar: a=rtpmap:100 X-NSE/8000
a=X-cpar: a=fmtp:100 200-202
a=X-cap: 2 image udptl t38

----------------------------------------------------------------

03:29:21 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
INVITE sip:101@192.168.193.200:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.192.100:5060;rport;branch=z9hG4bK17831236
To: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
From: <sip:849974xxxxxx@192.168.192.100>;tag=8095
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 797 INVITE
Max-Forwards: 20
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Contact: <sip:849974xxxxxx@192.168.192.100:5060>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, INFO, REFER, NOTIFY
Supported: replaces
Content-Type: application/sdp
Content-Length: 249

v=0
o=BroadWorks 119131937 2 IN IP4 213.85.168.52
s=-
c=IN IP4 192.168.192.100
t=0 0
m=image 20606 udptl t38
a=X-sqn:0
a=X-cap: 1 audio RTP/AVP 100
a=X-cpar: a=rtpmap:100 X-NSE/8000
a=X-cpar: a=fmtp:100 200-202
a=X-cap: 2 image udptl t38

----------------------------------------------------------------

03:29:21 UDP Packet Received from 192.168.193.200:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SIP/2.0 488 Not Acceptable Here
To: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
From: <sip:849974xxxxxx@192.168.192.100>;tag=8095
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 797 INVITE
Via: SIP/2.0/UDP 192.168.192.100:5060;branch=z9hG4bK17831236
Contact: 101 <sip:101@192.168.193.200:5060>
Warning: 304 spa "Media type not available"
Server: Linksys/SPA2102-5.1.12
Content-Length: 0


----------------------------------------------------------------

03:29:21 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
ACK sip:101@192.168.193.200:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.192.100:5060;rport;branch=z9hG4bK17831236
To: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
From: <sip:849974xxxxxx@192.168.192.100>;tag=8095
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 797 ACK
Max-Forwards: 20
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:21 UDP Packet Sent to 213.85.168.52:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 408 Request Timeout
Via: SIP/2.0/UDP 213.85.168.52:5060;branch=z9hG4bKf7b38430bgohfc4h37g0sb19mffl3.1
To: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
From: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 567932906 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:21 UDP Packet Sent to 192.168.193.200:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
BYE sip:101@192.168.193.200:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.192.100:5060;rport;branch=z9hG4bK17841236
To: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
From: <sip:849974xxxxxx@192.168.192.100>;tag=8095
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 798 BYE
Max-Forwards: 20
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:21 UDP Packet Sent to 213.85.168.52:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
BYE sip:849974xxxxxx@213.85.168.52:5060;transport=udp SIP/2.0
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport;branch=z9hG4bK17851236
To: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
From: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 798 BYE
Max-Forwards: 20
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:21 UDP Packet Received from 213.85.168.52:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
ACK sip:8499502xxxx@77.xx.xx.10:5060 SIP/2.0
Via: SIP/2.0/UDP 213.85.168.52:5060;branch=z9hG4bKf7b38430bgohfc4h37g0sb19mffl3.1
CSeq: 567932906 ACK
From: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
To: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
Max-Forwards: 9
Content-Length: 0


----------------------------------------------------------------

03:29:21 UDP Packet Received from 213.85.168.52:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
BYE sip:8499502xxxx@77.xx.xx.10:5060 SIP/2.0
Via: SIP/2.0/UDP 213.85.168.52:5060;branch=z9hG4bKf7b38430bgohfc4h37g0sd19mfvl3.1
From: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
To: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 567932907 BYE
Max-Forwards: 9
Content-Length: 0


----------------------------------------------------------------

03:29:21 UDP Packet Received from 213.85.168.52:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SIP/2.0 200 OK
Via: SIP/2.0/UDP 77.xx.xx.10:5060;received=77.xx.xx.10;branch=z9hG4bK17851236;rport=5060
To: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
From: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 798 BYE
Content-Length: 0


----------------------------------------------------------------

03:29:21 UDP Packet Sent to 213.85.168.52:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 200 OK
Via: SIP/2.0/UDP 213.85.168.52:5060;branch=z9hG4bKf7b38430bgohfc4h37g0sd19mfvl3.1
To: "101" <sip:8499502xxxx@qwerty.cnt.ru>;tag=8094
From: <sip:849974xxxxxx@qwerty.cnt.ru>;tag=1636064794-1203726708853
Call-ID: 1203587656-1236-CORE@77.xx.xx.10
CSeq: 567932907 BYE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:21 UDP Packet Received from 192.168.193.200:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SIP/2.0 200 OK
To: 101 <sip:101@192.168.192.100>;tag=f6c3ddecd7fd101fo0
From: <sip:849974xxxxxx@192.168.192.100>;tag=8095
Call-ID: 80cf47b0-8e21112b@192.168.193.200
CSeq: 798 BYE
Via: SIP/2.0/UDP 192.168.192.100:5060;branch=z9hG4bK17841236
Server: Linksys/SPA2102-5.1.12
Content-Length: 0


----------------------------------------------------------------

03:29:25 UDP Packet Sent to 213.85.168.52:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
REGISTER sip:qwerty.cnt.ru SIP/2.0
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport;branch=z9hG4bK17861236
Max-Forwards: 20
To: <sip:8499502xxxx@qwerty.cnt.ru>
From: <sip:8499502xxxx@qwerty.cnt.ru>;tag=8089
Call-ID: 1203587652-1236-CORE@77.xx.xx.10
CSeq: 5 REGISTER
Contact: <sip:8499502xxxx@77.xx.xx.10:5060>;NoExp=3600;q=0.90
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:32 UDP Packet Sent to 213.85.168.52:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
REGISTER sip:qwerty.cnt.ru SIP/2.0
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport;branch=z9hG4bK17871236
Max-Forwards: 20
To: <sip:8499502xxxx@qwerty.cnt.ru>
From: <sip:8499502xxxx@qwerty.cnt.ru>;tag=8089
Call-ID: 1203587652-1236-CORE@77.xx.xx.10
CSeq: 6 REGISTER
Contact: <sip:8499502xxxx@77.xx.xx.10:5060>;NoExp=3600;q=0.90
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

03:29:32 UDP Packet Received from 213.85.168.52:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SIP/2.0 200 OK
Via: SIP/2.0/UDP 77.xx.xx.10:5060;received=77.xx.xx.10;branch=z9hG4bK17871236;rport=5060
To: <sip:8499502xxxx@qwerty.cnt.ru>;tag=aprq726bvc2-remvq920000c0
From: <sip:8499502xxxx@qwerty.cnt.ru>;tag=8089
Call-ID: 1203587652-1236-CORE@77.xx.xx.10
CSeq: 6 REGISTER
Contact: <sip:8499502xxxx@77.xx.xx.10:5060>;expires=120


----------------------------------------------------------------

03:29:37 NAT Keep Alive Packet Sent to stun01.sipphone.com
03:29:52 NAT Keep Alive Packet Sent to sipnet.ru
03:29:52 NAT Keep Alive Packet Sent to sipnet.ru
03:30:23 NAT Keep Alive Packet Sent to qwerty.cnt.ru
03:30:26 NAT Keep Alive Packet Sent to stun01.sipphone.com

2) From time to time I got permanent "491 Request Pending" from AXON to remote SIP host. Allthough I have no active calls to that direction. I've tryed to restart AXON, reconnect - nothing helps. Permament 491.

16:39:39 UDP Packet Received from 192.168.193.200:5061 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
INVITE sip:740xxxx@192.168.192.100 SIP/2.0
Via: SIP/2.0/UDP 192.168.193.200:5061;branch=z9hG4bK-2cd97b5e
From: 102 <sip:102@192.168.192.100>;tag=3faa9d1dee850206o1
To: <sip:740xxxx@192.168.192.100>
Remote-Party-ID: 102 <sip:102@192.168.192.100>;screen=yes;party=calling
Call-ID: 51d84029-2806da6a@192.168.193.200
CSeq: 101 INVITE
Max-Forwards: 70
Contact: 102 <sip:102@192.168.193.200:5061>
Expires: 240
User-Agent: Linksys/SPA2102-5.1.12
Content-Length: 309
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: x-sipura, replaces
Content-Type: application/sdp

v=0
o=- 102912 102912 IN IP4 192.168.193.200
s=-
c=IN IP4 192.168.193.200
t=0 0
m=audio 8004 RTP/AVP 0 8 18 100 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:18 G729a/8000
a=rtpmap:100 NSE/8000
a=fmtp:100 192-193
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:30
a=sendrecv

----------------------------------------------------------------

16:39:39 UDP Packet Sent to 192.168.193.200:5061 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.193.200:5061;branch=z9hG4bK-2cd97b5e
To: <sip:740xxxx@192.168.192.100>
From: 102 <sip:102@192.168.192.100>;tag=3faa9d1dee850206o1
Call-ID: 51d84029-2806da6a@192.168.193.200
CSeq: 101 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Proxy-Authenticate: Digest realm="axon@core",nonce="v23218qaq41566w",opaque="",stale=FALSE,algorithm=MD5
Content-Length: 0


----------------------------------------------------------------

16:39:39 UDP Packet Received from 192.168.193.200:5061 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
ACK sip:740xxxx@192.168.192.100 SIP/2.0
Via: SIP/2.0/UDP 192.168.193.200:5061;branch=z9hG4bK-2cd97b5e
From: 102 <sip:102@192.168.192.100>;tag=3faa9d1dee850206o1
To: <sip:740xxxx@192.168.192.100>
Call-ID: 51d84029-2806da6a@192.168.193.200
CSeq: 101 ACK
Max-Forwards: 70
Contact: 102 <sip:102@192.168.193.200:5061>
User-Agent: Linksys/SPA2102-5.1.12
Content-Length: 0


----------------------------------------------------------------

16:39:39 UDP Packet Received from 192.168.193.200:5061 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
INVITE sip:740xxxx@192.168.192.100 SIP/2.0
Via: SIP/2.0/UDP 192.168.193.200:5061;branch=z9hG4bK-459f42ba
From: 102 <sip:102@192.168.192.100>;tag=3faa9d1dee850206o1
To: <sip:740xxxx@192.168.192.100>
Remote-Party-ID: 102 <sip:102@192.168.192.100>;screen=yes;party=calling
Call-ID: 51d84029-2806da6a@192.168.193.200
CSeq: 102 INVITE
Max-Forwards: 70
Proxy-Authorization: Digest 

username="102",realm="axon@core",nonce="v23218qaq41566w",uri="sip:740xxxx@192.168.192.100",
algorithm=MD5,response="78b20ff4bf

7ca55370b8519b25106cfe",opaque=""
Contact: 102 <sip:102@192.168.193.200:5061>
Expires: 240
User-Agent: Linksys/SPA2102-5.1.12
Content-Length: 309
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: x-sipura, replaces
Content-Type: application/sdp

v=0
o=- 102912 102912 IN IP4 192.168.193.200
s=-
c=IN IP4 192.168.193.200
t=0 0
m=audio 8004 RTP/AVP 0 8 18 100 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:18 G729a/8000
a=rtpmap:100 NSE/8000
a=fmtp:100 192-193
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:30
a=sendrecv

----------------------------------------------------------------

16:39:39 UDP Packet Sent to 192.168.193.200:5061 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.193.200:5061;branch=z9hG4bK-459f42ba
To: <sip:740xxxx@192.168.192.100>;tag=8288
From: 102 <sip:102@192.168.192.100>;tag=3faa9d1dee850206o1
Call-ID: 51d84029-2806da6a@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

16:39:39 UDP Packet Sent to 212.53.40.40:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
INVITE sip:740xxxx@sipnet.ru SIP/2.0
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport;branch=z9hG4bK46151236
To: <sip:740xxxx@sipnet.ru>
From: "102" <sip:502xxxx@sipnet.ru>;tag=8287
Call-ID: 1203587763-1236-CORE@77.xx.xx.10
CSeq: 797 INVITE
Max-Forwards: 69
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Contact: <sip:502xxxx@77.xx.xx.10:5060>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, INFO, REFER, NOTIFY
Supported: replaces
Content-Type: application/sdp
Content-Length: 354

v=0
o=- 102912 102912 IN IP4 192.168.193.200
s=-
c=IN IP4 77.xx.xx.10
t=0 0
m=audio 8000 RTP/AVP 0 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:18 G729a/8000
a=rtpmap:100 NSE/8000
a=fmtp:100 192-193
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:30
a=sendrecv
a=domain:77.xx.xx.10
a=local:192.168.192.100 8000

----------------------------------------------------------------

16:39:39 UDP Packet Received from 212.53.40.40:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport=5060;branch=z9hG4bK46151236
From: "102" <sip:502xxxx@sipnet.ru>;tag=8287
To: <sip:740xxxx@sipnet.ru>
Call-ID: 1203587763-1236-CORE@77.xx.xx.10
CSeq: 797 INVITE
Server: CommuniGatePro/5.2.1d
Content-Length: 0


----------------------------------------------------------------

16:39:39 UDP Packet Received from 212.53.40.40:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
INVITE sip:5335xx5@77.xx.xx.10:5060 SIP/2.0
Via: SIP/2.0/UDP 212.53.40.40:5060;branch=z9hG4bK156322-lnqxjfr;cgp=etc.tario.ru;rport
P-CGP-Redirector: copper@sipnet.ru
Record-Route: <sip:212.53.40.40:5060;lr>
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport=5060;branch=z9hG4bK46151236
Max-Forwards: 68
From: "102" <sip:502xxxx@sipnet.ru>;tag=8287
To: <sip:740xxxx@sipnet.ru>
Call-ID: 1203587763-1236-CORE@77.xx.xx.10
Contact: <sip:502xxxx@77.xx.xx.10:5060>
CSeq: 797 INVITE
Supported: replaces
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, INFO, REFER, NOTIFY
Content-Type: application/sdp
Content-Length: 354

v=0
o=- 102912 102912 IN IP4 192.168.193.200
s=-
c=IN IP4 77.xx.xx.10
t=0 0
m=audio 8000 RTP/AVP 0 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:18 G729a/8000
a=rtpmap:100 NSE/8000
a=fmtp:100 192-193
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=ptime:30
a=sendrecv
a=domain:77.xx.xx.10
a=local:192.168.192.100 8000

----------------------------------------------------------------

16:39:39 UDP Packet Sent to 212.53.40.40:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 491 Request Pending
Via: SIP/2.0/UDP 212.53.40.40:5060;branch=z9hG4bK156322-lnqxjfr;cgp=etc.tario.ru;rport
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport=5060;branch=z9hG4bK46151236
Record-Route: <sip:212.53.40.40:5060;lr>
To: <sip:740xxxx@sipnet.ru>;tag=8287
From: "102" <sip:502xxxx@sipnet.ru>;tag=8287
Call-ID: 1203587763-1236-CORE@77.xx.xx.10
CSeq: 797 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

16:39:39 UDP Packet Received from 212.53.40.40:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
ACK sip:5335xx5@77.xx.xx.10:5060 SIP/2.0
P-CGP-Redirector: copper@sipnet.ru
Via: SIP/2.0/UDP 212.53.40.40:5060;branch=z9hG4bK156322-lnqxjfr;cgp=etc.tario.ru;rport
Max-Forwards: 68
From: "102" <sip:502xxxx@sipnet.ru>;tag=8287
To: <sip:740xxxx@sipnet.ru>;tag=8287
Call-ID: 1203587763-1236-CORE@77.xx.xx.10
CSeq: 797 ACK
Content-Length: 0


----------------------------------------------------------------

16:39:39 UDP Packet Received from 212.53.40.40:5060 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SIP/2.0 491 Request pending
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport=5060;branch=z9hG4bK46151236
From: "102" <sip:502xxxx@sipnet.ru>;tag=8287
To: <sip:740xxxx@sipnet.ru>;tag=8287
Call-ID: 1203587763-1236-CORE@77.xx.xx.10
CSeq: 797 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

16:39:39 UDP Packet Sent to 212.53.40.40:5060 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
ACK sip:740xxxx@sipnet.ru SIP/2.0
Via: SIP/2.0/UDP 77.xx.xx.10:5060;rport;branch=z9hG4bK46151236
To: <sip:740xxxx@sipnet.ru>;tag=8287
From: "102" <sip:502xxxx@sipnet.ru>;tag=8287
Call-ID: 1203587763-1236-CORE@77.xx.xx.10
CSeq: 797 ACK
Max-Forwards: 20
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

16:39:39 UDP Packet Sent to 192.168.193.200:5061 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
SIP/2.0 480 Temporarily Unavailable
Via: SIP/2.0/UDP 192.168.193.200:5061;branch=z9hG4bK-459f42ba
To: <sip:740xxxx@192.168.192.100>;tag=8288
From: 102 <sip:102@192.168.192.100>;tag=3faa9d1dee850206o1
Call-ID: 51d84029-2806da6a@192.168.193.200
CSeq: 102 INVITE
User-Agent: NCH Swift Sound Axon Virtual PBX 1.31
Content-Length: 0


----------------------------------------------------------------

16:39:39 UDP Packet Received from 192.168.193.200:5061 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
ACK sip:740xxxx@192.168.192.100 SIP/2.0
Via: SIP/2.0/UDP 192.168.193.200:5061;branch=z9hG4bK-459f42ba
From: 102 <sip:102@192.168.192.100>;tag=3faa9d1dee850206o1
To: <sip:740xxxx@192.168.192.100>;tag=8288
Call-ID: 51d84029-2806da6a@192.168.193.200
CSeq: 102 ACK
Max-Forwards: 70
Proxy-Authorization: Digest 

username="102",realm="axon@core",nonce="v23218qaq41566w",uri="sip:740xxxx@192.168.192.100"
,algorithm=MD5,response="78b20ff4bf

7ca55370b8519b25106cfe",opaque=""
Contact: 102 <sip:102@192.168.193.200:5061>
User-Agent: Linksys/SPA2102-5.1.12
Content-Length: 0


----------------------------------------------------------------

16:39:46 NAT Keep Alive Packet Sent to stun.sipnet.ru

Masterpiece · March 5, 2008

So nobody gonna answer about "Request Timeout" to remote server, after AXON receives "Not Acceptable Here" from local client?

ahoman · March 10, 2008

So nobody gonna answer about "Request Timeout" to remote server, after AXON receives "Not Acceptable Here" from local client?

You may find the answer below:

http://www.nch.com.au/kb/10064.html

Masterpiece · March 10, 2008

You may find the answer below:
http://www.nch.com.au/kb/10064.html

There no answer to the question - why AXON sends "Request Timeout" to remote server, instead of forwarding "Not Acceptable Here"...

Masterpiece · June 6, 2008

Version 2.0 has the same bug!!! It is totally impossible to send\receive faxes via axon!!! In T.38 there is "no_signal" message (in direct connection to SIP server T.38 works fine), and G711 FAX Passthru also could not be used, because AXON responds "408 Request Timeout" to remote host, but not "488 Not Acceptable Here".

COULD SOMEONE INFLUENCE TO SUPPORT IN ORDER TO FIX THIS PROBLEM?

pythonpoole · June 6, 2008

Perhaps you should consider a Fax to E-mail line? You can get them amazingly cheap, in fact there used to be a company that gave them away for free. Essentially it's just a dedicated number they set-up for you and whenever a fax call comes in, they PDF it and send it to you via email.

Keep in mind faxes on VoIP are not that reliable. Unless you keep a perfect quality line, there were likely be some trouble. Every time the quality is distorted, the voice breaks up, or the jitter buffer time shifts the audio, the fax machine could lose out on the connection / have a corrupted transmission. Most VoIP devices which do support FAX or FAX passthru note this unreliability in the device's documentation.

If you want a more reliable FAX method I suggest either use a dedicated FAX line from your Telco or a Fax to Email service.

Masterpiece · June 8, 2008

When I connect my VoIP gateway DIRECTRLY to SIP provider, I have no troubles with sending\receiving faxes in T.38 or G.711 pass-thru, 90% of faxes are sent\received successfully.

pythonpoole · June 8, 2008

Did you ever submit the bug to NCH (using this page)? If you just posted here, it's unlikely the developers are even aware of the issue. You can also contact the Axon support team directly here.

Masterpiece · June 9, 2008

Countless number of times...

I've also sent private message to their forum accounts, to their emails... I hoped they would fix it in 2.00 version (at last in commercial edition) BUT NO LUCK! THEY EVEN DIDNT ANSWER!

pythonpoole · June 9, 2008

I suggest you PM nchaj, she is the Technical Support and Development Program Manager at NCH and I'm sure she will be happy to help you/inform the programmers of the problem on your behalf.

Masterpiece · June 9, 2008

Sent her a PM, waiting for the answer...

Masterpiece · June 10, 2008

Finally, she passed this trouble to the developers... Now we have a ghostly hope, that in the next release it would be fixed.

Axon 1.31 bug on sip commands relay

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