[SIPForum-discussion] Doubts in SIP

[Nitin Kapoor]

Sathya,



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.



http://www.voipthink.com/codec/codecs.php



Thanks,

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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