[SR-Users] Can Kamailio help with this?

Fri May 21 16:53:40 CEST 2021

Hello Anthony,

as written before, Kamailio is from its design and setup targeted to many different use cases. For certain use cases you find examples or tutorials in our wiki. But if the example fits to your case, is mostly a matter of luck and how common it is.

The module documentation is indeed more in "reference" style, useful for somebody who knows how to combine the building blocks, but for a newcomer admittedly less useful.

There exists a Kamailio book (refer to asipto.com) which might be useful for your situation. Here you will get a more broader picture about the different modules and how they can fit together.

Another approach which some people are using is to start with the default configuration (which has a lot of comments) and experiment with e.g., a small server and 1-2 phones. For more advanced topics there exists many talks from past Kamailio World conferences.

Cheers,

Henning

-----Original Message-----
From: sr-users <sr-users-bounces at lists.kamailio.org> On Behalf Of Antony Stone
Sent: Friday, May 21, 2021 4:31 PM
To: sr-users at lists.kamailio.org
Subject: Re: [SR-Users] Can Kamailio help with this?

On Friday 21 May 2021 at 16:14:06, Jurijs Ivolga wrote:

> Hi,
> 
> If your remote PBX support path header,

That is something I cannot tell, since the PBXs I shall be registering to are operated by customers and/or their service providers.  All I know are the SIP credentials to register with.

Is path header a common thing for PBXs to support or not support?

> then easiest way would be to use Path module of Kamailio:
> 
> https://www.kamailio.org/docs/modules/devel/modules/path.html

Hm, that seems like comprehensive documentation about a specific module, but how does this fit into a bigger picture?

As I said, I have never implemented Kamailio so far, so I'm looking for a guide which shows me how to set up something which I hope is quite basic (forwarding client SIP registrations), starting from when I have installed Kamailio on a machine.

Thanks,

> On Fri, May 21, 2021 at 5:09 PM Antony Stone wrote:
> > Hi.
> > 
> > I think maybe I asked this question at a busy time, when people were 
> > dealing with other questions.
> > 
> > Can anyone point me at the appropriate documentation on how to get 
> > Kamailio set up to pass client registrations through to a remote PBX?
> > 
> > I'm assuming this is a pretty basic use case, but I haven't yet 
> > found a simple guide.
> > 
> > 
> > Thanks in advance.
> > 
> > On Tuesday 18 May 2021 at 12:51:21, Antony Stone wrote:
> > > On Saturday 15 May 2021 at 22:49:01, Mojtaba wrote:
> > > > Absolutely yes, In Kamailio with specific module you could do it.
> > > > Some related module for doing this scenario are:
> > > > presence, presence_xml, presence_dialoginfo, pua, pua_dialoginfo 
> > > > You could know more about them by referring to its documentation.
> > > 
> > > Thanks for the confirmation; I'm sure the details you provide will 
> > > make more sense to me once I'm at a stage where I can use them.
> > > 
> > > In the meantime, I assume that the other part of my requirement - 
> > > getting Kamailio to pass through client registrations from 
> > > Asterisk to a remote PBX - is a far more standard setup - where 
> > > can I find configuration guidelines on how to do this, given that 
> > > I've never implemented Kamailio so far?
> > > 
> > > 
> > > Thanks,
> > > 
> > > > On Sat, May 15, 2021 at 5:52 PM Antony Stone wrote:
> > > > > Hi.
> > > > > 
> > > > > I've been aware of Kamailio, and on this list, for several 
> > > > > years, but so far I have not implemented Kamailio for any purpose.
> > > > > 
> > > > > I wonder if it could be a suitable tool for the following scenario.
> > > > > 
> > > > > I currently use Asterisk to register as a client, with 
> > > > > username and password, to other SIP PBXs in order to receive 
> > > > > calls.  As far as the other PBX is concerned, Asterisk looks 
> > > > > like a SIP telephone on a particular extension.
> > > > > 
> > > > > However, Asterisk's SIP client capabilities are limited to 
> > > > > handling phone calls only, and it specifically cannot receive 
> > > > > presence information about the state of other extensions from 
> > > > > the remote PBX.
> > > > > 
> > > > > So, could Kamailio be used in the path between Asterisk and 
> > > > > the remote PBX so that the registration on the PBX comes from 
> > > > > Kamailio (with any incoming calls being passed to Asterisk), 
> > > > > but with Kamailio also receiving presence information from the 
> > > > > remote PBX and making this available to some script or 
> > > > > application (which I would expect to have to write)?
> > > > > 
> > > > > The main point is that I don't want to have two things 
> > > > > registering to the remote PBX, one for calls and one for 
> > > > > presence, so I'm looking for a way to register with something 
> > > > > which understands presence, and can also pass calls on to Asterisk.
> > > > > 
> > > > > Can anyone suggest whether Kamailio could do this, and if so, 
> > > > > point me at some resources to help me get started; or 
> > > > > alternatively suggest ideas on some other tool which might be 
> > > > > more appropriate than Kamailio?
> > > > > 
> > > > > 
> > > > > Thanks for any ideas,
> > > > > 
> > > > > 
> > > > > Antony.

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