[azx]

Happy New Year all.

What is the recommended settings for using spa-2000 and fax. Our gateway dont support T38, but after what Ive read that shouldnt be any problem since the 2000 dont support it.

Can the SPA-2000 autodetect a incoming fax?, or do I need to reserve one port to fax only?

I read that latency shouldnt be a problem, but packetloss is the big evil when fax'ing with VOiP, I guess this is correct?

is the G.711codec the preferred one for fax?

I probarbly have more questions later

TIA

[mberlant]

You don't need to do anything special to your SPA-2000. There is a CNG sensor in the firmware that will detect the fax training tones and will do things like turning off the echo canceller and the silence suppression for the call.

What you can do to help is to make sure that you have at least 80kbps of bandwidth in each direction for the G.711 CODEC to do its job and slow down the sending fax machine to the slowest speed that both sender and receiver can handle. That would be 9.6kbps (definitely disable 14.4kbps) or, even better, 4.8kbps. Slow and steady wins this race.