[Asterisk-Users] Digium cards, so disappointing !

[George Pajari]

Kevin:

You wrote:
> FAX transmission is massively more complex than modem transmission. At
> higher speeds, it involves 3 or 4 different 'carrier' frequencies and
> signaling rate shifts, and these are done with very critical timing
> requirements.
>   

I'm sure you didn't quite mean to write what you have said above. Fax 
transmission builds upon exactly the same ITU-T standards as data 
transmission. For example, 33.6 kbps fax transmission (so called "Super 
G3") uses the same V.34 standard as 33.6 data modems. At slower speeds, 
fax modems use a half-duplex standard that is less complex than that 
used by full duplex modems running at the same speed.

If there is a problem with Digium hardware handling fax signals it 
cannot be laid at the purported "massively more complex" signalling of 
fax transmissions.

-- 
George Pajari, netVOICE communications    604 484 VOIP (484 8647 x102)
Open Source VoIP/Telephony Specialists  1 877 NET VOIP (638 8647 x102)
                  www.netvoice.ca  www.ip-centrex.ca
      www.digium.ca www.grandstream.ca www.sipura.ca www.snom.ca