[Asterisk-Users] codes/grandstream/PRI.. few questions :)

[vocalvoip]

Hi Guys..

Just wondering if someone could help me with a few questions please. were currently using the ulaw codec with our grandstream/iconnect/asterisk setup and its working pretty good except for the fact it downloads heaps. Does anyone know a good site to get referances to how much each codec downloads/quality etc etc ? Ive tried using that g723 codec but i have have problems as soon as a i dial..

my next question.. :) does anyone know howto fix the grandstream 484 errors you get sometimes when you dial ? i had a look at they rekon to put early dial on.. which just makes things worse heh. 
They'd be a cool little phone except for this problem. 

Lastly were looking at getting a PRI or something to handle 30 lines.. I know digium sells hardware to do this, has anyone in australia gotten good results from doing this kind of setup ?? also what are the restrictions in regards to caller id and that sort of stuff in aus? do is all work ?


thanks heaps everyone :)

Merry Christmas

Justin