[Asterisk-Users] Best codec for faxes?

[Julio Arruda]

Roger Schreiter wrote:
> Matthew Boehm schrieb:
> 
>> I'm not using asterisk as the "fax machine" a la rxfax and the like. I'm
>> using an ATA (linksys, grandstream, etc) plugged into a fax machine. I 
>> know
>> not to use 729 for faxing. Which 'should' I use?
>> ...
> Hi,
> 
> use G.711, and you'll have ISDN quality!
> Tradidional analog adaptors for ISDN do the same,
> and (analog) faxing over ISDN is working fine, isn't it?

I would expect FAX over ISDN to work better than fax over G.711 on some 
networks.
ISDN doesn't have the jitter/packet loss of IP networks (unless you 
control the whole path or has some nice SLA :-)). The price being, is a 
circuit switched technology.