It seems BSC is sending payload type GSM to LCR, but LCR send payload type PCMA on the sip channel.
07.03.12 22:45:03.907 CH(69): New call ref LCR<->BSC callref new=0x80000029 07.03.12 22:45:03.907 CH(69): Codec negotiation LCR<->BSC bearer capa='given by MS' speech version='AMR given' ignored='Not suitable for LCR' version='5 given' ignored='Not supported by LCR' version='EFR given' ignored='Not suitable for LCR' version='Full Rate given' version='Half Rate given' ignored='Not suitable for LCR' 07.03.12 22:45:03.908 CH(69): MNCC_SETUP_IND LCR<->BSC calling number=07777201 imsi=413011492012312 dialing number=4290080001 07.03.12 22:45:03.908 CH(69): MNCC_LCHAN_MODIFY LCR<->BSC speech version='Full Rate given' mode 0x01 07.03.12 22:45:03.908 CH(69): MNCC_CALL_PROC_REQ LCR<->BSC progress coding=3 location=1 descr=8 07.03.12 22:45:03.908 CH(69): unknown LCR<->BSC 07.03.12 22:45:03.908 CH(70): NEW handle handle new=0x8d65cc0 07.03.12 22:45:03.908 CH(70): INVITE from uri=sip:07777201@192.168.1.30 to uri= sip:4290080001@192.168.1.25:4757 rtp ip=103.10.172.30 port=30026,30027 payload=PCMA:8 07.03.12 22:45:03.930 CH(70): RESPOND respond value=183 07.03.12 22:45:03.930 CH(70): Payload received rtp payload=PCMA:8 payload=telephone-event:101 07.03.12 22:45:13.117 CH(69): MNCC_DISC_IND LCR<->BSC cause coding=3 location=0 value=16 07.03.12 22:45:13.148 CH(69): MNCC_REL_REQ LCR<->BSC 07.03.12 22:45:13.148 CH(70): CANCEL cause value=16 07.03.12 22:45:13.169 CH(70): RESPOND respond value=487
On Wed, Mar 7, 2012 at 3:43 PM, Nik Pakar nikpakar@gmail.com wrote:
Hi Andreas, is the LCR actually transcoding gsm-fr to alaw towards sip side ?
Rgds Nik
On Wed, Mar 7, 2012 at 3:17 PM, Nik Pakar nikpakar@gmail.com wrote:
Hi Andreas,
Call signalling all works fine right through out from NITB to LCR and out on SIP. how ever im getting some strange media behaviour.
My setup is,
[MS]---[nano.BTS]---[NITB/LCR]----[SIP Softswitch]
LCR is setup to bridge two interfaces, so what ever comes from gsm goes to sip and what ever comes from sip goes to gsm.
Now a test call from a mobile to mobile, should go all the way to the softswitch and come back.
All works fine in terms of signalling.
But in media, LCR seems sending initial SDP to the softswitch as PCMA:8 not gsm FR.
So softswitch expect the media as PCMA and not transcoding.
Same if the call goes out from softswitch, still no medial as it think incoming media from LCR is on PCMA.
Any idea about this ?
This is the LCR trace - http://pastebin.com/5PNKYc5m This is the sip trace from softswitch - http://pastebin.com/cVtx1mFB
Rgds Nik
On Tue, Mar 6, 2012 at 3:38 PM, Nik Pakar nikpakar@gmail.com wrote:
Hi Andreas, got it working both ways now. Many thanks for nice work.
I will now test it further with transcoding.
And start on the documentation.
Rgds Nik
On Tue, Mar 6, 2012 at 12:51 PM, Nik Pakar nikpakar@gmail.com wrote:
Hi Andreas, i now have calls coming from external sip->LCR->gsm
But still cant figure out the dial plan to send a call out on sip, gsm->LCR->sip
I tried,
dialing=072333444 : extern interfaces=sip prefix=072333444
But on LCR trace it shows as below. I think im missing some thing small here. Appreciate if you can give a little hint.
Thanks nik
06.03.12 12:40:41.286 EP(1): ACTION (match) action goto line 11 06.03.12 12:40:41.286 EP(1): ACTION goto/menu (change to) ruleset extern dialing 072333444 06.03.12 12:40:41.286 EP(1): ACTION (match) action extern line 28 06.03.12 12:40:41.286 EP(1): ACTION extern (calling) number 072333444 interfaces sip 06.03.12 12:40:41.287 EP(1): SETUP ACKNOWLEDGE to CH(1) 06.03.12 12:40:41.287 EP(2): CHANNEL SELECTION (found given interface) interface sip 06.03.12 12:40:41.287 EP(2): INTERFACE (has no function) interface�@ 06.03.12 12:40:41.287 EP(2): INTERFACE (no free ports found) 06.03.12 12:40:41.287 EP(1): TONE to CH(1) directory default name cause_22 06.03.12 12:40:41.287 EP(1): DISCONNECT to CH(1) cause value=34 location=1-Local-PBX 06.03.12 12:40:41.287 CH(1): MNCC_DISC_REQ LCR<->BSC progress coding=3 location=1 descr=8 cause coding=3 location=1 value=34 06.03.12 12:40:56.246 CH(1): MNCC_REL_IND LCR<->BSC cause coding=3 location=0 value=16 06.03.12 12:40:56.247 EP(1): RELEASE from CH(1) cause value=16 location=0-User 06.03.12 12:40:56.247 EP(1): ACTION hangup
On Tue, Mar 6, 2012 at 7:44 AM, Nik Pakar nikpakar@gmail.com wrote:
Hi Andreas,
It was apperently compiled on my debian while i had misdn libs isntalled. Now im trying on a fresh debian from the same set of sources which i got it working and without misdn, it fails to compile gsm.
Attached is my config output and compile break.
So should i still install misdn even though its not used.
Rgds Nik
On Mon, Mar 5, 2012 at 10:05 AM, Andreas Eversberg < andreas@eversberg.eu> wrote:
Alexander Chemeris wrote: > Does it mean that that now we can use LCR with other SIP > softswitches/PBX'es, like Freeswitch? I do not follow LCR development > closely, but that would be a very interesting development. > yes, this was my intention. gsm and sip interface of lcr will not rely on misdn anymore. currently i don't support audio transfer via chan_lcr, so chan_lcr will only work with isdn interfaces. the sip interface implementation has not much options, so it can only do sipmple point-to-point sip connections to a gateway or endpoint.