[SR-Users] Regarding IMS/RCS complaint clients for Kamailio IMS/RCS server

[MadhuManjushaAripirala]

Hello,
Please let me know
1.What are the IMS and RCS based clients available to test on Kamailio
IMS/RCS server?

2.On browsing for Kamailio Installation,I found below 3 different
links,please suggest me which one to be followed.

https://loadmultiplier.com/node/76
http://www.kamailio.org/wiki/tutorials/ims/installation-howto
http://kamailio.org/wiki/install/4.2.x/git

3.From the first link above,I see there are separate steps mentioned to
install CSCF nodes and HSS but where I find no information for setting up
RCS AS(application server) module.Please let me know on this.


Thanks & Regards,
Manjusha.





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[Camille Oudot]

Hi,

Post by MadhuManjushaAripirala
1.What are the IMS and RCS based clients available to test on Kamailio
IMS/RCS server?

you can use the following android application:

https://rcsjta.googlecode.com/git/sdk-joyn/index.html

Post by MadhuManjushaAripirala
2.On browsing for Kamailio Installation,I found below 3 different
links,please suggest me which one to be followed.

The 2 first links are IMS specific instructions, i think they
complement each other.

The third link is a generic kamailio install from sources tutorial,
that you won't need if you use RPMs or .deb packages.

Post by MadhuManjushaAripirala
https://loadmultiplier.com/node/76
http://www.kamailio.org/wiki/tutorials/ims/installation-howto
http://kamailio.org/wiki/install/4.2.x/git
3.From the first link above,I see there are separate steps mentioned
to install CSCF nodes and HSS but where I find no information for
setting up RCS AS(application server) module.Please let me know on
this.

There is no RCS AS function in kamailio, this has to be a separate
server. Unfortunately there is no freely available RCS AS to my
knowledge. But fortunately, most use cases of RCS don't absolutely
require an AS to work, only the groupchat scenario needs one.

[MadhuManjushaAripirala]

Hi,
Thankyou for the reply.

Few more questions please....

Can I be able to enhance Kamailio 4.2.x IMS/RCS based server to implement
file transfer feature in it?

Quick replies most appreciated.




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[Camille Oudot]

Le Wed, 25 Mar 2015 02:44:37 -0700,

Post by MadhuManjushaAripirala
Can I be able to enhance Kamailio 4.2.x IMS/RCS based server to
implement file transfer feature in it?

Hi,

keep in mind that kamailio only takes care of SIP signaling, and RCS
file transfer use MSRP to transfer data. Now this is not 100%
true, since kamailio also has a MSRP relay feature, that I've never
tried.

If you want to implement this feature, you can either let the clients
do peer-to-peer media, or use a MSRP relay. For the latter case you
will have to make kamailio modify the SDP to redirect media flows.

[Carsten Bock]

Hi,

just to add a little to this topic and on file transfers:
If you look at Camarillo and Garcia-Martin's book "The 3G IP
Multimedia Subsystem (IMS)" (often referred to as the "Big yellow
book" on IMS, one of the standard books on IMS), it says, that you
should announce an MSRP-Relay in the DNS for File-Transfers. This is a
feature, you can achieve with Kamailio out of the box.

However, the 3rd and latest edition of this book was published in 2011...

If you look at the Specs for RCS-e (aka. JOYN), then this is no longer
valid. You need to implement some sort of MSRP B2B-UA, you need to
implement "Store and forward", as the standard RCS-clients won't
trigger a MSRP relay. This feature cannot be achieved with Kamailio at
the moment.

Also, if you look at the presence stuff associated with RCS-e/JOYN,
you will need further enhancements to Kamailio's presence
infrastructure, to achieve compability.

This is of course a pure RCS-e/Joyn point of view and it does not
cover all previous releases of GSMA's RCS specs.

However, i also did not come accross any other RCS deployments
(neither network nor device) than RCS-e/JOYN.

Thanks,
Carsten

Post by Camille Oudot
Le Wed, 25 Mar 2015 02:44:37 -0700,

Post by MadhuManjushaAripirala
Can I be able to enhance Kamailio 4.2.x IMS/RCS based server to
implement file transfer feature in it?

Hi,
keep in mind that kamailio only takes care of SIP signaling, and RCS
file transfer use MSRP to transfer data. Now this is not 100%
true, since kamailio also has a MSRP relay feature, that I've never
tried.
If you want to implement this feature, you can either let the clients
do peer-to-peer media, or use a MSRP relay. For the latter case you
will have to make kamailio modify the SDP to redirect media flows.
--
Camille
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[MadhuManjushaAripirala]

Hi Camille,
Thank you for the response.

I am initially trying with group chat.
Conference based UA <----> Kamailio server(add module which acts as
conference handling) <-----> Conference based UA.
Is any code or steps available to add to the existing kamailio server,to
achieve group chat?

Regards,
Madhu.


On Tue, Mar 31, 2015 at 2:08 PM, Camille Oudot [via SIP Router] <

Post by Camille Oudot
Le Wed, 25 Mar 2015 02:44:37 -0700,
MadhuManjushaAripirala <[hidden email]

Post by MadhuManjushaAripirala
Can I be able to enhance Kamailio 4.2.x IMS/RCS based server to
implement file transfer feature in it?

Hi,
keep in mind that kamailio only takes care of SIP signaling, and RCS
file transfer use MSRP to transfer data. Now this is not 100%
true, since kamailio also has a MSRP relay feature, that I've never
tried.
If you want to implement this feature, you can either let the clients
do peer-to-peer media, or use a MSRP relay. For the latter case you
will have to make kamailio modify the SDP to redirect media flows.
--
Camille
_______________________________________________
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[MadhuManjushaAripirala]

Hello
Can you please share me any document or url for group chat methods.
I would want to know what all kinds of packets(method with headers) are
exchanged for group chat.
Pls share me at the earliest possible.

On Wed, Mar 25, 2015 at 3:14 PM, MadhuManjushaAripirala [via SIP Router] <

Post by MadhuManjushaAripirala
Hi,
Thankyou for the reply.
Few more questions please....
Can I be able to enhance Kamailio 4.2.x IMS/RCS based server to implement
file transfer feature in it?
Quick replies most appreciated.
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