Don't understand H.323 and G.711 2

[Irvineguy]

I've read a few definitions but can someone explain to me how H.323 and G.711 comes into play for VOIP? Thank you.

 

[Sympology]

Your getting mixed up over protocols and codecs.

There are serveral Protocols about, h323, SIP, MGCP etc etc.
Within these are CODECs which are used to compress the data and decompress it again at the other end.

So to make it simpler the protocol is your choice of transport and your codec is how you cram people in.

So h323 for example may be seen as the Train.
You choose how you cram people in. You can be efficient and pack as much in as possible, but it won't be a quailty journey. Or you can scrifice space and have people travel in space and comfort, but it will cost more.

But in the same anolgy, you will find that your transport isn't compatible with others.
So for example SIP (transport) could be a car. So although it's a form of transport and you can cram it full or have it nice and empty (Codec), it can't run on the train track, so is not comptible with h323.


For more info have a look here:

http://www.voip-info.org/tiki-index.php

Only the truly stupid believe they know everything.
Stu.. 2004

 

[IPuser]

I read somewher H.323 is more of an umbrella, than a train.

Cheers,
Larry

Ask a Teenager

 

[wolseley]

Thanks for sharing the knowledge