Yes 5060, it shows up in sip info on the server as port 15752 due to NAT I suppose..
on the 6757i you can set DTMF to RTP SIP INFO or BOTH I set to RTP
RTP encryption is disabled…
the call just fails.
here is a sip trace…
pbx*CLI> sip set debug peer 502
SIP Debugging Enabled for IP: 88.***.***.140:15752
pbx*CLI>
<--- SIP read from 88.***.***.140:15752 --->
INVITE sip:07*******75@***.***.***.53:5060 SIP/2.0
Via: SIP/2.0/UDP 192.68.1.40:5060;branch=z9hG4bK581335de56ec5d7e6.b5add2fc4a9dcb9e9
Max-Forwards: 70
From: "502" <sip:502@***.***.***.53:5060>;tag=75b1459841
To: "07*******75" <sip:07*******75@***.***.***.53:5060>
Call-ID: b65d02092a9f4fad
CSeq: 17221 INVITE
Allow: *INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, OPTIONS, UPDATE, PRACK, SUBSCRIBE, INFO
Allow-Events: talk, hold, conference, LocalModeStatus
Contact: "502" <sip:
[email protected]:5060;transport=udp>;+sip.instance="<urn:uuid:00000000-0000-1000-8000-00085D10B769>"
Supported: gruu, path, timer, 100rel, replaces
User-Agent: Aastra 57i/2.5.2.1010
Content-Type: application/sdp
Content-Length: 593
v=0
o=MxSIP 0 0 IN IP4 192.68.1.40
s=SIP Call
c=IN IP4 192.68.1.40
t=0 0
m=audio 3000 RTP/AVP 0 18 106 107 113 110 111 112 98 97 115 96 9 8 101
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=rtpmap:106 BV16/8000
a=rtpmap:107 BV32/16000
a=rtpmap:113 L16/16000
a=rtpmap:110 PCMU/16000
a=rtpmap:111 PCMA/16000
a=rtpmap:112 L16/8000
a=rtpmap:98 G726-16/8000
a=rtpmap:97 G726-24/8000
a=rtpmap:115 G726-32/8000
a=rtpmap:96 G726-40/8000
a=rtpmap:9 G722/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=silenceSupp

ff - - - -
a=fmtp:101 0-15
a=ptime:30
a=sendrecv
<------------->
--- (14 headers 25 lines) ---
Using INVITE request as basis request - b65d02092a9f4fad
<--- Reliably Transmitting (NAT) to 88.***.***.140:15752 --->
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.68.1.40:5060;branch=z9hG4bK581335de56ec5d7e6.b5add2fc4a9dcb9e9;received=88.***.***.140
From: "502" <sip:502@***.***.***.53:5060>;tag=75b1459841
To: "07*******75" <sip:07*******75@***.***.***.53:5060>;tag=as30bd5ad1
Call-ID: b65d02092a9f4fad
CSeq: 17221 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Proxy-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="3385701b"
Content-Length: 0
<------------>
Scheduling destruction of SIP dialog 'b65d02092a9f4fad' in 32000 ms (Method: INVITE)
Found user '502'
<--- SIP read from 88.***.***.140:15752 --->
ACK sip:07*******75@***.***.***.53:5060 SIP/2.0
Via: SIP/2.0/UDP 192.68.1.40:5060;branch=z9hG4bK581335de56ec5d7e6.b5add2fc4a9dcb9e9
Max-Forwards: 70
From: "502" <sip:502@***.***.***.53:5060>;tag=75b1459841
To: "07*******75" <sip:07*******75@***.***.***.53:5060>;tag=as30bd5ad1
Call-ID: b65d02092a9f4fad
CSeq: 17221 ACK
User-Agent: Aastra 57i/2.5.2.1010
Content-Length: 0
<------------->
--- (9 headers 0 lines) ---
Reliably Transmitting (NAT) to 88.***.***.140:15752:
OPTIONS sip:
[email protected]:5060;transport=udp SIP/2.0
Via: SIP/2.0/UDP ***.***.***.53:5060;branch=z9hG4bK658399da;rport
From: "Unknown" <sip:Unknown@***.***.***.53>;tag=as5926bf92
To: <sip:
[email protected]:5060;transport=udp>
Contact: <sip:Unknown@***.***.***.53>
Call-ID: 649e94d442d90d44255f206639f4e496@***.***.***.53
CSeq: 102 OPTIONS
User-Agent: Asterisk PBX
Max-Forwards: 70
Date: Sat, 14 Nov 2009 10:49:06 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Content-Length: 0
---
Reliably Transmitting (NAT) to 88.***.***.140:15752:
OPTIONS sip:
[email protected]:5060;transport=udp SIP/2.0
Via: SIP/2.0/UDP ***.***.***.53:5060;branch=z9hG4bK29611e07;rport
From: "Unknown" <sip:Unknown@***.***.***.53>;tag=as3781a393
To: <sip:
[email protected]:5060;transport=udp>
Contact: <sip:Unknown@***.***.***.53>
Call-ID: 495ae8284ce3a594093ee13611ccd156@***.***.***.53
CSeq: 102 OPTIONS
User-Agent: Asterisk PBX
Max-Forwards: 70
Date: Sat, 14 Nov 2009 10:49:06 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Content-Length: 0