Cell Relay Archive

[Manish Kumar <manish@npi.stpn.soft.net>]

> Hi,
> I am looking for AAL2. I would like know where I can find information
> about the standards. and its differences with AAL1 and so on.

Documents to refer -I.321 : B-ISDN PRM
I.363 : B-ISDN AAL FUNC DES.
I.363 : B-ISDN AAL SPEC

So, far as the difference between AAL1 and AAL2 is concerned - the above
docs will be of help.
In few words - AAL 1 would implement voice over ATM in the form of
circuit emulation (CBR). On the other hand AAL2 uses (VBR) - so you may
use compression techniques and exploit periods of silence (leading to
effective use of BW).

> Actually I
> want to use AAL2 for compressed voice over ATM project. Could anyone
> give me some idea of how to do it.

> Please help me out. I am very

> desperate.
>
> Any help would be greately appreciated.
>
> Thanks,
> Raghu