[SIPForum-discussion] Doubts in SIP

Nitin Kapoor nitinkapoorr at gmail.com
Wed Jan 27 18:10:02 UTC 2010


SIP definitely follows OSI reference model. SIP is said to be “Application
layer” protocol because it closely resembles the semantics of application
layer protocols like HTTP.

SIP: combination of application and session layers

SDP: session and presentation

TCP/USP: Transport

IP: Network

Apart from please go through the below link to check out the codec detail.



Nitin Kapoor

2010/1/26 Sathya <thinksathya at gmail.com>

> Hello Everybody .....
>  As i am new to SIP kindly clear my below doubts ...
> 1. What layer of OSI belongs to SIP and the reason for it.
> 2. Different types of codecs and their bandwidth usages and the type of
> environment it can be used .
> Thanks
> Sathya.
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