Curt Shaffer wrote:
I am looking for an ATA that has had very reliable results when
passing FAX over IP. I was thinking of testing the Cisco (not Linksys)
ATA 186 I1, ATA 186 I2, ATA 188 I1. This is what I’m looking for:
FAX -> PTSN -> through Asterisk -> ATA -> Fax Machine.
(a) If you are not running a version of Asterisk that has working SIP
jitter buffering (is there such a thing?), then abandon all hope now.
(b) We have no experience with the Cisco ATAs, but the Linksys (nee
Sipura) SPA-210x is markedly better than the SPA-100x and SPA-200x,
probably because they have better jitter buffering (it goes without
saying we do not pass our fax traffic through Asterisk).
(c) T.38 is the way to go, G.711 a poor and distant second choice
(again, Asterisk's T.38 pass-through is far from ready for prime time).
g.
--
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
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