We have a SIP based PBX behind the firewall.
A VoIP server outside the firewall.
I enabled SIP Security and can make and receive calls.
However, T38 Faxing has issues.
The call comes in and is answered but the remote VoIP server is being given this IP to redirect the call to: 48.91.54.245 Astaro seems to be generating this IP in response!
If I disable SIP Security on Astaro, it works fine.
Any ideas?
Frame 67 (1114 bytes on wire, 1114 bytes captured)
Ethernet II, Src: Cisco_15:4a:c0 (00:15:62:15:4a:c0), Dst: Xensourc_b3:6b:91 (00:16:3e:b3:6b:91)
Internet Protocol, Src: 172.17.4.84 (172.17.4.84), Dst: 172.17.10.16 (172.17.10.16)
Internet Protocol, Src: 203.153.227.210 (203.153.227.210), Dst: 202.147.134.21 (202.147.134.21)
User Datagram Protocol, Src Port: sip (5060), Dst Port: sip (5060)
Session Initiation Protocol
Session Initiation Protocol (SIP as raw text)
INVITE sip:SDmdhc6-vv9pmjj9mvp7tbr5iqonkdpvku9rouvrjrdrvorsmqvt8@202.147.134.21:5060;transport=udp SIP/2.0\r\n
Via: SIP/2.0/UDP 203.153.227.210:5060;branch=z9hG4bK-d8754z-1665716847461422-1---d8754z-;rport\r\n
Max-Forwards: 70\r\n
Contact: \r\n
To: ;tag=SDscsbe01-736092134-1270777069476-\r\n
From: "61894239001 61894239001";tag=7453206f\r\n
Call-ID: SDscsbe01-0f096a0a75ffa14002f3dfaa8f370786-au418e3\r\n
CSeq: 2 INVITE\r\n
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE\r\n
Content-Type: application/sdp\r\n
User-Agent: 3CXPhoneSystem 8.0.10708.0\r\n
Content-Length: 299\r\n
\r\n
v=0\r\n
o=3cxPS 123731968000 517526781954 IN IP4 48.91.54.245\r\n
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