Hi Cristi ,

Cristian Iconaru · ‎03-19-2014

Hi guys,

would it be possible to allow sip users to register over the sip trunk on the Call Manager? or is this method not allowed?

Thanks.

Best regards

Dragan Ilic · ‎03-19-2014

You're not using SIP trunk for registering users - you're using it for call routing. You register SIP devices as official one or third-party on CM.

On other hand if you want to register SIP for PSTN access you would need CUBE gate for that.

HTH,

Dragan

HTH,
Dragan

Chris Deren · ‎03-19-2014

What are the device types the users use? As correctly pointed out by Dragan the devices dont register via SIP trunk, but they can be SIP devices and register with CUCM as SIP endpoint.

Chris

Cristian Iconaru · ‎03-19-2014

Hi Chris,

thanks for the reply.

well the devices are sipml5/html5 sip clients. I'm trying the webrtc with the CM in my lab to see how it works.

The problem is that when I call from a sip client to a phone registered on the CM I've got: SIP/2.0 401 Unauthorized, so the call fails. I thought this might be due to the fact that the CM doesn't know the source IP of the INVITE. CM has no sip trunks.

If I set up a trunk on the CM to the webrtc gateway, then the sip clients try to register over the trunk and then I've got:

RECV:SIP/2.0 405 Method Not Allowed
Warning: 399 cucm "SIP trunk disallows REGISTER"

Any ideas? Do you have any experience with webrtc?

Thanks.

Chris Deren · ‎03-19-2014

What are the phones defined as in CUCM? remember not all SIP phones are offically supported by Cisco, in fact only handful of them are. Is it defined as 3rd party SIP device?

Chris

Cristian Iconaru · ‎03-19-2014

Third-party SIP Device. the phones do register on cm. (if the trunk is not set)

Thanks

Manish Prasad · ‎03-19-2014

Hi Cristi ,

Can you please send across sip messages. And which protocol are you using as WEBrtc communication protocol ?

See if one end of call leg is Web and other end is SIP , then you need intelligent WEBrtc server to interwork with these two protocols.

Thanks

Manish

Cristian Iconaru · ‎03-19-2014

Hi Manish,

between sip client and webrtc gw -> ws and between webrtc gw and CM -> sip.

here are the sip messages.

both phones are registered, 9000 is a 7912 and 8080 is sip.

192.168.15.2 - CM

192.168.15.202 - webrtc

SEND: INVITE sip:9000@192.168.15.2 SIP/2.0
Via: SIP/2.0/UDP 192.168.15.202:10060;branch=z9hG4bK-1536671115;rport
From: <sip:8080@192.168.15.2>;tag=400660433
To: <sip:9000@192.168.15.2>
Contact: <sip:8080@192.168.15.202:10060;ws-src-ip=192.168.251.105;ws-src-port=50731;ws-src-proto=ws;transport=udp>
Call-ID: df093113-7c32-2a2f-2372-8af2dfbe9235
CSeq: 1875466830 INVITE
Content-Type: application/sdp
Content-Length: 978
Max-Forwards: 70
Authorization: Digest username="8080",realm="ccmsipline",nonce="gHqGqDWK4zTzv6Ijl6ixW58AK/Gm4yC6",uri="sip:9000@192.168.15.2",response="352cb2e17e36b32ee4e0d52443d0a106",algorithm=MD5
User-Agent: webrtc2sip Media Server 2.6.0

v=0
o=doubango 1983 678901 IN IP4 192.168.15.202
s=-
c=IN IP4 192.168.15.202
t=0 0
a=tcap:1 RTP/SAVPF RTP/SAVP RTP/AVPF
m=audio 58690 RTP/AVP 8 0 101
c=IN IP4 192.168.15.202
a=ptime:20
a=minptime:1
a=maxptime:255
a=silenceSupp:off - - - -
a=rtpmap:8 PCMA/8000/1
a=rtpmap:0 PCMU/8000/1
a=rtpmap:101 telephone-event/8000/1
a=fmtp:101 0-16
a=acap:1 crypto:1 AES_CM_128_HMAC_SHA1_80 inline:1YfBfgbhIdMB6YVtyZgJqc77QPHwm9o42aEPbkHD
a=acap:2 crypto:2 AES_CM_128_HMAC_SHA1_32 inline:fujGVOi70hQnKkeUimcFUw2bH3ajZ2iW0xKy5Nrw
a=pcfg:1 t=1 a=1,2
a=pcfg:2 t=2 a=1,2
a=pcfg:3 t=3
a=sendrecv
a=rtcp-mux
a=ssrc:4034073057 cname:c08c56217e96dbc1e8234373eb5d2fcc
a=ssrc:4034073057 mslabel:6994f7d1-6ce9-4fbd-acfd-84e5131ca2e2
a=ssrc:4034073057 label:doubango@audio
a=ice-ufrag:uaektHZ6KFVn1fw
a=ice-pwd:HAj21nuOrDmIKl3ANXTc3K
a=candidate:tWR5PLw1x 1 udp 2130706431 192.168.15.202 58690 typ host
a=candidate:tWR5PLw1x 2 udp 2130706430 192.168.15.202 58691 typ host

RECV:SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.15.202:10060;branch=z9hG4bK-1536671115;rport
From: <sip:8080@192.168.15.2>;tag=400660433
To: <sip:9000@192.168.15.2>
Date: Wed, 19 Mar 2014 13:26:05 GMT
Call-ID: df093113-7c32-2a2f-2372-8af2dfbe9235
CSeq: 1875466830 INVITE
Allow-Events: presence
Content-Length: 0

RECV:SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 192.168.15.202:10060;branch=z9hG4bK-1536671115;rport
From: <sip:8080@192.168.15.2>;tag=400660433
To: <sip:9000@192.168.15.2>;tag=856401750
Date: Wed, 19 Mar 2014 13:26:05 GMT
Call-ID: df093113-7c32-2a2f-2372-8af2dfbe9235
CSeq: 1875466830 INVITE
Allow-Events: presence
WWW-Authenticate: Digest realm="ccmsipline", nonce="gHqGqDWK4zTzv6Ijl6ixW58AK/Gm4yC6", algorithm=MD5
Content-Length: 0

SEND: ACK sip:9000@192.168.15.2 SIP/2.0
Via: SIP/2.0/UDP 192.168.15.202:10060;branch=z9hG4bK-1536671115;rport
From: <sip:8080@192.168.15.2>;tag=400660433
To: <sip:9000@192.168.15.2>;tag=856401750
Call-ID: df093113-7c32-2a2f-2372-8af2dfbe9235
CSeq: 1875466830 ACK
Content-Length: 0
Max-Forwards: 70

Receiving SIP o/ WebSocket message: ACK sip:9000@192.168.15.2 SIP/2.0
Via: SIP/2.0/WS df7jal23ls0d.invalid;branch=z9hG4bKZEk81zTwfVde8oImts6ZHiTzchfBWh1N;rport
From: "8080"<sip:8080@192.168.15.2>;tag=XFKqC4zu0S9QfzzMzQ4u
To: <sip:9000@192.168.15.2>;tag=1464334432
Call-ID: ecc84fa2-3de3-d953-527f-5e7515cabca3
CSeq: 29519 ACK
Content-Length: 0
Route: <sip:192.168.15.2:5060;lr;sipml5-outbound;transport=udp>
Max-Forwards: 70

Thanks.

Manish Prasad · ‎03-24-2014

Really sorry for delay in reply.

On CUCM device- > phone page , what ip address do you see next to sip client which is registered as third party sip device ?

Is it same as webrtc gw ip 192.168.15.202 ?

https://supportforums.cisco.com/blog/12016616/webrtc-demo-system

Thanks

Manish

Cristian Iconaru · ‎03-24-2014

yes, it's the same as webrtc - 192.168.15.202.

any ideas?

Thanks.

Manish Prasad · ‎03-24-2014

What happens when you call from cisco phone to sip client ? Does it connect ?

And when you call from sipml client to cisco phone what message do you hear when call gets disconnected ?

Thanks

Manish

Cristian Iconaru · ‎03-24-2014

it doesn't really connect, it rings and when I answer the call gets terminated on the sip client side but the cisco phone stays "connected", as if it is connected. on webrtc console I got this, which is a bit strange because I only enbaled g711. so I believe something's wrong on webrtc side when I call from cisco -> sip.

***ERROR: function: "tdav_session_audio_start()"
file: "src/audio/tdav_session_audio.c"
line: "389"
MSG: No codec matched
***ERROR: function: "tmedia_session_mgr_start()"
file: "src/tmedia_session.c"
line: "873"
MSG: Failed to start audio session

sip -> cisco, there's no message played, the call gets "declined" with SIP/2.0 401 Unauthorized.

Thanks.

Manish Prasad · ‎03-24-2014

Hi Cristi,

Check this post , it matches the issue that you are facing.

https://code.google.com/p/webrtc2sip/wiki/Building_Source_v2_0

(Comment by ducdung0...@gmail.com, Jan 16, 2013 )

Rate useful post.

Thanks

Manish

Cristian Iconaru · ‎03-24-2014

where exactly? I know this post but it's nothing related to this issue.

I've tested the same config with asterisk and it works.

Thanks.

Cristian Iconaru · ‎03-20-2014

Any thoughts?

Thanks

CM Register over SIP Trunk