[SIPForum-discussion] Does SIP support SSL, new protocols, early media, etc?

[qcorba]

There is an industrial standard which address some (if not all) of these
issues: http://www.sipforum.org/sipconnect

Rodrigo Pimenta Carvalho <pimenta at inatel.br> 於 2015年6月9日星期二 寫道：

>
> Hi.
>
> I'm starting with SIP and with a software project in my company. Today I
> have some beginner doubts:
>
> 1 - In my project a SIP client will call others SIP clients at same time,
> i.e., several SIP clients will receive SIP INVITE, like calling for a
> conference. But, when one callee answer the call, all the others must stop
> ringing immediate. The objective is let just one SIP client answer the
> call. it will be the first that will reply. Can the SIP protocol help me
> with this idea? Is SIP protocol prepared for such idea, in terms of its
> messages?
>
> 2 - In my project, a callee must receive and view the video from the
> caller, even before answering the call (early media). Can SIP help me with
> this requirement? How?
>
> 3 - I know that SIP can be used together SDP. And I guess that SIP can be
> used with any another protocol. So, let's suppose that I have created an
> new protocol based on Json. This protocol will carry information about some
> IP devices, like IP addresses and port. Can I send SIP messages with a new
> Json based protocol together? How can SIP help me with this idea?
>
> 4 - I need send/receive SIP messages encrypted, to provide secure to my
> SIP clients. In this case, what should I do to provide secure SIP messages
> using SSL or TLS? Does SIP protocol support this idea in some way? How?
>
> Any hint will be very helpful!
>
> Thanks a lot!
>
> Best regards.
>
>
> RODRIGO PIMENTA CARVALHO
> Inatel Competence Center
> Software
> Ph: +55 35 3471 9200 RAMAL 979
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