[SR-Users] Can Kamailio help with this?

[Antony Stone]

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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