15 Oct
2012
15 Oct
'12
6:24 p.m.
Hello list,
First of all congratulation to developers of this project making such
wonderful project in an interesting subject. I am new to this project and
for past few days i managed to go through the documentation and get most of
it tested. Thanks for pretty good documentation in most of the areas as
well.
I have the osmo-nitb working very fine using a nano bts.
How ever when i try to install it with LCR to interconnect with external
switch, im facing some problems. Initially i thought i must use
LCR+Asterisk. But later i figured out there is a built in SIP interface on
LCR which there is no need to asterisk or chan_asterisk. I would prefer to
use this LCR SIP interface as i dont want to use asterisk and just want to
forward all calls to another SIP switch.
Now in this context there seems absolutely no documentation on both openbsc
and LCR/mISDN lists.
Can some one please shed me some light here on how to build a LCR with SIP
to be work with osmo-nitb.
All i want to test is
GSM phone > Osmo-nitb > LCR with SIP > SIP softswitch
Thank you very much for every one's effort in this project and would be
glad to see some response for this.
Best Regards
Nava.
15 Oct
15 Oct
7:27 p.m.
Hi Nava,
I have tried the same some time ago. LCR-SIP implementation seems very nice
in what you trying to do without using asterisk. I managed to get calls
ring back and forward in a similar setup but i was running into serious
problems with RTP/media. This was mainly due to transcoding or rtp-bridge
functions. I was some what successful with the help from andreas but could
not make it work 100%.
May be now there is a fix for the rtp issues which i never tried after that.
Give it a try using the latest git clone from LCR and see. As i can
remember you need to check out jolly/rtpmux branch in order to get this
working. Andreas can give some hint if possible on this.
Good luck.
Nik.
On Mon, Oct 15, 2012 at 9:54 PM, Kelum Navaratne <kelum.nava(a)gmail.com>wrote;wrote:
Hello list,
First of all congratulation to developers of this project making such
wonderful project in an interesting subject. I am new to this project and
for past few days i managed to go through the documentation and get most of
it tested. Thanks for pretty good documentation in most of the areas as
well.
I have the osmo-nitb working very fine using a nano bts.
How ever when i try to install it with LCR to interconnect with external
switch, im facing some problems. Initially i thought i must use
LCR+Asterisk. But later i figured out there is a built in SIP interface on
LCR which there is no need to asterisk or chan_asterisk. I would prefer to
use this LCR SIP interface as i dont want to use asterisk and just want to
forward all calls to another SIP switch.
Now in this context there seems absolutely no documentation on both
openbsc and LCR/mISDN lists.
Can some one please shed me some light here on how to build a LCR with SIP
to be work with osmo-nitb.
All i want to test is
GSM phone > Osmo-nitb > LCR with SIP > SIP softswitch
Thank you very much for every one's effort in this project and would be
glad to see some response for this.
Best Regards
Nava.
16 Oct
16 Oct
10:21 a.m.
hi kelum,
in order to use sip, you need jolly/new branch of lcr and jolly/rtpmux
of openbsc. the sip implementation of LCR is quite simple, so no
authentication or oder features - just simple point-to-point SIP. if you
run confiure of LCR, check if sip is enabled. in order to add a SIP
interface, do the following at interface.conf:
[sip]
sip <local ip>[:<local port>] <remote ip>[:<remote port>]
earlyb yes
tones no
you need to define local IP that will be used to connect to remote SIP
endpoint. don't use localhost, if the endpoint is on a different
machine, because this IP is also used for RTP. if you use same machine,
you need to have different ports. you may change local port, by adding a
local port or you may change port of SIP endpoint and then add remote port.
i have tested it with freeswitch, but asterisk should work also.
you may then also try at interface.conf below "[sip]" definition:
rtp-brige
then the codec (full rate or enhanced full rate) is negotiated between
mobile and the remote SIP endpoint. the SIP endpoint must support at
least one of it.
regards,
andreas
3:19 p.m.
Hi Andreas,
Thank you very much. This is a good start for me. I also need to work with
freeswitch. Not asterisk. And simple point to point sip is more than enough
and rtp bridge would be fantastic.
Would it work with amr codec as well ? Or only gsm full rate/ h. Rate?
Im trying to find the lcr git location of jolly/new. Can you please give me
the url. I cant find it on openbsc git.
Thanks again.
Nava.
On Tuesday, October 16, 2012, Andreas Eversberg wrote:
hi kelum,
in order to use sip, you need jolly/new branch of lcr and jolly/rtpmux of
openbsc. the sip implementation of LCR is quite simple, so no
authentication or oder features - just simple point-to-point SIP. if you
run confiure of LCR, check if sip is enabled. in order to add a SIP
interface, do the following at interface.conf:
[sip]
sip <local ip>[:<local port>] <remote ip>[:<remote port>]
earlyb yes
tones no
you need to define local IP that will be used to connect to remote SIP
endpoint. don't use localhost, if the endpoint is on a different machine,
because this IP is also used for RTP. if you use same machine, you need to
have different ports. you may change local port, by adding a local port or
you may change port of SIP endpoint and then add remote port.
i have tested it with freeswitch, but asterisk should work also.
you may then also try at interface.conf below "[sip]" definition:
rtp-brige
then the codec (full rate or enhanced full rate) is negotiated between
mobile and the remote SIP endpoint. the SIP endpoint must support at least
one of it.
regards,
andreas
23 Jan
23 Jan
5:24 a.m.
Hi Every one,
Would the IP.Access nanoBTS works behind a NAT with OpenBSC ?
i.e. two BTSs in two different locations behind NAT connecting to NITB. im
trying to make a call, but it seems rtp has some problem.
rgds
Nava
On Tue, Oct 16, 2012 at 6:49 PM, Kelum Navaratne <kelum.nava(a)gmail.com>wrote;wrote:
Hi Andreas,
Thank you very much. This is a good start for me. I also need to work with
freeswitch. Not asterisk. And simple point to point sip is more than enough
and rtp bridge would be fantastic.
Would it work with amr codec as well ? Or only gsm full rate/ h. Rate?
Im trying to find the lcr git location of jolly/new. Can you please give
me the url. I cant find it on openbsc git.
Thanks again.
Nava.
On Tuesday, October 16, 2012, Andreas Eversberg wrote:
> hi kelum,
>
> in order to use sip, you need jolly/new branch of lcr and jolly/rtpmux of
> openbsc. the sip implementation of LCR is quite simple, so no
> authentication or oder features - just simple point-to-point SIP. if you
> run confiure of LCR, check if sip is enabled. in order to add a SIP
> interface, do the following at interface.conf:
>
> [sip]
> sip <local ip>[:<local port>] <remote ip>[:<remote port>]
> earlyb yes
> tones no
>
> you need to define local IP that will be used to connect to remote SIP
> endpoint. don't use localhost, if the endpoint is on a different machine,
> because this IP is also used for RTP. if you use same machine, you need to
> have different ports. you may change local port, by adding a local port or
> you may change port of SIP endpoint and then add remote port.
>
> i have tested it with freeswitch, but asterisk should work also.
>
> you may then also try at interface.conf below "[sip]" definition:
>
> rtp-brige
>
> then the codec (full rate or enhanced full rate) is negotiated between
> mobile and the remote SIP endpoint. the SIP endpoint must support at least
> one of it.
>
> regards,
>
> andreas
>
>
>
>
>
>
>
8:41 a.m.
Kelum Navaratne wrote:
Would the IP.Access nanoBTS works behind a NAT with
OpenBSC ?
i.e. two BTSs in two different locations behind NAT connecting to
NITB. im trying to make a call, but it seems rtp has some problem.
hi kelum,
the NAT firewall should track the RTP frames from BTS behind NAT, so
that frames from BSC outside NAT can find their way to the BTS. i
suggest to sniff (tcpdump/wireshark) behind and before NAT, in order to
localize the problem.
regards,
andreas
26 Jan
26 Jan
4:47 p.m.
Hi Andreas, this is this mean a BTS behind NAT and a OpenBSC
+LCR/freeswitch + sip phone on freeswitch will be able to communicate with
good RTP ?
Rgds
Nik
On Wed, Jan 23, 2013 at 1:11 PM, Andreas Eversberg <andreas(a)eversberg.eu>wrote;wrote:
Kelum Navaratne wrote:
Would the IP.Access nanoBTS works behind a NAT
with OpenBSC ?
i.e. two BTSs in two different locations behind NAT connecting to NITB.
im trying to make a call, but it seems rtp has some problem.
hi kelum,
the NAT firewall should track the RTP frames from BTS behind NAT, so that
frames from BSC outside NAT can find their way to the BTS. i suggest to
sniff (tcpdump/wireshark) behind and before NAT, in order to localize the
problem.
regards,
andreas
6:24 p.m.
Andreas Eversberg wrote:
the NAT firewall should track the RTP frames
Nik Pakar wrote:
this is this mean a BTS behind NAT and a OpenBSC
+LCR/freeswitch + sip phone on freeswitch will be able to
communicate with good RTP ?
I think Andreas wrote pretty clearly that it depends on if the NAT
firewall can and will track RTP or not; it has nothing to do with
the software on either side.
Follow Andreas' advice and experiment with different configurations
while studying the packets on both sides of the firewall.
//Peter
5:20 p.m.
Hello andreas,
Im trying to get the jolly/new branch of lcr, but there is no such branch
on the tree. below is my output. can you please let me know whether im
checking out from the right repo.
root@debian:/software/lcr# git clone git://git.misdn.eu/lcr.git/
Cloning into lcr...
remote: Counting objects: 3695, done.
remote: Compressing objects: 100% (1328/1328), done.
remote: Total 3695 (delta 2716), reused 3226 (delta 2353)
Receiving objects: 100% (3695/3695), 5.76 MiB | 8.27 MiB/s, done.
Resolving deltas: 100% (2716/2716), done.
root@debian:/software/lcr/lcr# git branch -a
* master
remotes/origin/1.10
remotes/origin/1.11
remotes/origin/1.13
remotes/origin/1.8
remotes/origin/1.9
remotes/origin/HEAD -> origin/master
remotes/origin/holger/cleaning
remotes/origin/holger/cleaning-rebased
remotes/origin/jolly/vootp
remotes/origin/master
remotes/origin/pending
root@debian:/software/lcr/lcr#
On Tue, Oct 16, 2012 at 1:51 PM, Andreas Eversberg <andreas(a)eversberg.eu>wrote;wrote:
hi kelum,
in order to use sip, you need jolly/new branch of lcr and jolly/rtpmux of
openbsc. the sip implementation of LCR is quite simple, so no
authentication or oder features - just simple point-to-point SIP. if you
run confiure of LCR, check if sip is enabled. in order to add a SIP
interface, do the following at interface.conf:
[sip]
sip <local ip>[:<local port>] <remote ip>[:<remote port>]
earlyb yes
tones no
you need to define local IP that will be used to connect to remote SIP
endpoint. don't use localhost, if the endpoint is on a different machine,
because this IP is also used for RTP. if you use same machine, you need to
have different ports. you may change local port, by adding a local port or
you may change port of SIP endpoint and then add remote port.
i have tested it with freeswitch, but asterisk should work also.
you may then also try at interface.conf below "[sip]" definition:
rtp-brige
then the codec (full rate or enhanced full rate) is negotiated between
mobile and the remote SIP endpoint. the SIP endpoint must support at least
one of it.
regards,
andreas
6:47 p.m.
Kelum Navaratne wrote:
Im trying to get the jolly/new branch of lcr
Seriously? Come on..
On Tue, Oct 16, 2012 at 1:51 PM, Andreas Eversberg
<andreas(a)eversberg.eu> wrote:
> in order to use sip, you need jolly/new branch of lcr
Guess if there was some activity in the repository in the last three
months?
Oh wait - this is open source, so actually you don't have to guess.
You can use the git log command to study the commit history and
IMMEDIATELY see what development has happened in the repository.
I suggest that you try that now.
If you are more ambitious then you will of course additionally read
the git-log manual, where you will find that you can use various
methods to search the repository history. You might come up with a
command like:
git log --all -i --grep=rtp
..which you can follow up with a command like:
git branch --contains insert_commit_id_here
..to learn which branches contain the most interesting commits.
I advise you to study git, so that you will be able to use source
code managed in git repositories. If you don't know the tools then
you're very limited, and the OpenBSC community is obviously the wrong
place for git training. There are plenty of resources online. I
recommend studying the free-as-in-beer book called Pro Git.
Ask google.com about it.
//Peter
7:31 p.m.
Kelum Navaratne wrote:
Im trying to get the jolly/new branch of lcr, but
there is no such
branch on the tree. below is my output. can you please let me know
whether im checking out from the right repo.
hi kelum,
it's gone - deleted. because it's already merged with master.
regards,
andreas
4110
days inactive
4213
days old
10 comments
4 participants
participants (4)
-
Andreas Eversberg -
Kelum Navaratne -
Nik Pakar -
Peter Stuge