[SR-Users] Advice on taking the best path to build a Presence & IM server

José Seabra joseseabra4 at gmail.com
Wed Oct 18 11:02:41 CEST 2017

Hi Olle,

Thank you for your feedback about this subject, was really important to me
receive this in order to  follow the correct path.

Once that WebRTC is growing fast i also see some solutions based on xmpp
through websockets and others using a custom implementation based on
websockts and json.

I will continue my investigation to reach the correct solution to follow :)

Once again, thank you.
José Seabra

2017-10-17 8:27 GMT+01:00 Olle E. Johansson <oej at edvina.net>:

> On 16 Oct 2017, at 22:24, José Seabra <joseseabra4 at gmail.com> wrote:
> Hello there,
> I'm writing here in order to get your experiences about a Presence & IM
> server.
> I would like to know what is the best solution to follow:
>    - SIP Simple or XMPP?
> I've more knowledge about SIP Simple with kamailio but i did some
> researches and i found several open sources unified communications software
> that's implement Presence and IM using an XMPP server.
> So what is your opinion about which is the best solution to choose, taking
> in considerations the following aspects:
>    1. scalability
>    2. interopeability
>    3. permornace
>    4. features(like: Personal assistance, voicemail integration, chat
>    group, integration with social media)
> Should i choose Kamailio SIP Simple with xcap or an XMPP server(Prosody or
> ejabberd, etc)
> I will appreciate a lot your opinion.
> With very sad eyes I have to say that SIP Simple is a big failure. There’s
> no interoperability as every vendor
> did their own thing and there was no focus on interoperability in the
> group. Vendors have stated to me that
> they just want their customers to buy their servers and their clients and
> problem is solved. I tried really hard
> to set up a vendor-neutral solution but failed miserably - the various
> clients and servers parse the
> standards in different ways. The working group is closed and I have seen
> almost no activity in the IETF in that area since.
> XMPP on the other hand thrives and continues their development. There is a
> core of developers that
> work with standards and interoperability and it continues.
> I think scalability, performance and features are almost the same, but
> XMPP wins in regards to interoperability.
> And please José, don’t start diving down into the SIMPLE specifications,
> because there are way too
> many from different organisations and you’ll end up quite mad.
> This is my personal view after a complete failure trying to build a Lync
> competitor based on open
> standards. The bad feeling in my stomach may affect my clarity in this
> matter. ;-)
> /O
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José Seabra
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