26 Mar
2013
26 Mar
'13
4:51 p.m.
On 3/26/13 11:57 AM, Vitaliy Aleksandrov wrote:
--
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, April 16-17, 2013, Berlin
- http://conference.kamailio.com -
It works pretty good.
But when I was testing such an implementation with imitation of high
latency (200ms) and packet loss(about 15%) voice over UDP worked much
better since TCP was trying to retransmit lost segments.
I think TCP_NODELAY must be always enabled to avoid packets
concatenation at sender's outgoing buffer to reduce latency.
Indeed, that is a
good option. RTP was designed for UDP, sending it over
TCP adds some drawbacks -- on a good connection would be hard to notice,
but on poor connections could make it impossible to hear something.
Cheers,
Daniel
Hello,
This was a concept raised in my mind and was looking for a lead or
hint to get started to work on routing rtp via tcp. ( On SIP phone as
well as Kamailio ). I knew through googling there has been such
implementation and thus to make sure it is an absolute possibility. So
here, I am just trying my luck to interact with developers who has
worked on such project, if any.
Warm Regards
Selvam
On 3/26/13, Daniel-Constantin Mierla <miconda(a)gmail.com> wrote:
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http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users Hello,
On 3/26/13 9:46 AM, Techie Sup wrote:
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http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users Hi Daniel,
Its more of a customized encryption technique I am looking for.
that is a bit
vague, maybe you can give some examples.
Nobody here did an invention on encryption techniques, if that is the
question. Otherwise, if you look for particular mechanism, even not
implemented, we can say if it can be done or not.
Encryption of SIP and RTP is already addressed as
I can see from many
threads, but important part is whether is there any possibility of
routing rtp over tcp. Is it a possible concept or impossible task to
implement it on kamailio. I just want a lead about this concept.
Routing rtp via
tcp is possible as technology, being pretty much what
happens with some VPN systems. But it is not only a matter of kamailio,
but also of SIP phone.
Cheers,
Daniel
Warm Regards
Selvam
On 3/26/13, Daniel-Constantin Mierla <miconda(a)gmail.com> wrote:
> Hello,
>
> On 3/25/13 9:31 PM, Techie Sup wrote:
>> Hello,
>>
>> Any successful implementation of adding some customized security
>> (encryption) over sip and rtp in kamailio? (non TLS) Also looking
>> for
>> assistance on the concept of rtp over tcp using kamailio and
>> rtpproxy.
> using VPN/ipsec tunnel is a way to get both sip and rtp encrypted
> between two SIP nodes.
>
> Other than TLS, Kamailio does not do any encryption for SIP. What
> alternatives you would look for?
>
> Cheers,
> Daniel
>
> --
> Daniel-Constantin Mierla - http://www.asipto.com
> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> Kamailio World Conference, April 16-17, 2013, Berlin
> - http://conference.kamailio.com -
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
> list
> sr-users(a)lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
--
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, April 16-17, 2013, Berlin
- http://conference.kamailio.com -