PeterInFrankfurt
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Posts posted by PeterInFrankfurt
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Thanks for the reply. I can find no relevant settings on the gateway. I noticed that a=fmtp:101 0-16 is not mentioned in the gateway's reply. However, RFC 2833 says:
Since all implementations MUST be able to receive events 0 through 15, listing these events in the a=fmtp line is OPTIONAL.
Are you saying the snomone pbx insists the gateway response explicitly includes a=fmtp... ?
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I need to send Out-of-Band DTMF to an extension, but the snomone appears to transcode the DTMF to in-band. (The "extension" is really an IKON gateway which only supports out-of-band DTMF.) Here's a part of the logfile:
[6] 2013/09/10 13:19:40: Call port 121: Different Codecs (local telephone-event/8000, remote PCMA/8000), callid f419f99b@pbx, falling back to transcoding
[6] 2013/09/10 13:19:40: Received DTMF *, call type attendant
[8] 2013/09/10 13:19:40: Attendant: Ignoring the DTMF * in the state connected
How can I make the pbx forward the DTMF as an RTP-event to the "extension"?
In case it's relevant, here's the INVITE etc.
2013/9/10 13:19:39 Tx: udp:172.27.66.105:5067 (959 bytes)
INVITE sip:240@172.27.66.105:5067 SIP/2.0
Via: SIP/2.0/UDP 172.27.66.106:5060;branch=z9hG4bK-abb91ea6476deec2bab243dd796c1b78;rport
From: "Svalbard MER1" <sip:401@localhost;user=phone>;tag=51546
To: "MSG Control Room" <sip:240@localhost>
Call-ID: 57a2ef9c@pbx
CSeq: 27025 INVITE
Max-Forwards: 70
Contact: <sip:240@172.27.66.106:5060;transport=udp>
Supported: 100rel, replaces, norefersub
Allow-Events: refer
Allow: INVITE, ACK, CANCEL, BYE, REFER, PRACK, INFO, UPDATE
Accept: application/sdp
User-Agent: snomONE/5.1.0
Alert-Info: <http://127.0.0.1/Bellcore-dr3>
Content-Type: application/sdp
Content-Length: 329
v=0
o=- 63349 63349 IN IP4 172.27.66.106
s=-
c=IN IP4 172.27.66.106
t=0 0
m=audio 41036 RTP/AVP 8 0 9 2 3 101
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:9 G722/8000
a=rtpmap:2 G726-32/8000
a=rtpmap:3 GSM/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=rtcp-xr:rcvr-rtt=all voip-metrics
a=sendrecv
and here's the OK back
2013/9/10 13:19:39 Rx: udp:172.27.66.105:5067 (820 bytes)
SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.27.66.106:5060;branch=z9hG4bK-abb91ea6476deec2bab243dd796c1b78;rport
From: "Svalbard MER1" <sip:401@localhost;user=phone>;tag=51546
To: "MSG Control Room" <sip:240@localhost>;tag=802229
Call-ID: 57a2ef9c@pbx
CSeq: 27025 INVITE
Contact: <sip:240@172.27.66.105:5067>
Allow: REGISTER,SUBSCRIBE,NOTIFY,INVITE,ACK,PRACK,OPTIONS,BYE,CANCEL,REFER,INFO,UPDATE
Content-Length: 149
Content-Type: application/sdp
Server: (innovaphone H323/[unknown])
Supported: replaces,100rel,sec-agree,answermode
P-Preferred-Identity: <sip:240@172.27.66.105:5067>
Remote-Party-ID: <sip:240@172.27.66.105:5067>;party=called;screen=no;privacy=off
v=0
o=- 49 1 IN IP4 172.27.66.105
s=-
c=IN IP4 172.27.66.105
t=0 0
a=sendrecv
m=audio 8184 RTP/AVP 8 0
a=ptime:20
a=silenceSupp:off - - - -
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Thanks! It works.
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I'm using snom one version 5.1.0 and need to disable the "camp on" feature. (some of my UAs have no dial pads) This option does not appear in the Domain Settings. Is it now located somewhere else or called something else?
Sending Out-of-Band DTMF to an IKON Gateway
in Gateways
Posted
I've found a way to make the gateway behave correctly - it works now! Many thanks for your help.