On Sat, 2006-02-18 at 22:04 -0800, Lee Howard wrote: > Traditional faxing (not T.38) pretty much requires a lossless audio > channel. Normally the best way to get this is with PSTN channels/lines > through a Zap device. That said, VoIP channels can be configured such > that they are also lossless. IAXmodem, for example, functions on the > premise that an IAX2 channel passing over the loopback device will be > lossless. I have also seen lossless SIP and IAX channels running over a > WAN, but they were very specificially configured, and I wouldn't expect > most connections with traditional VoIP providers to be anything near the > kind of losslessness that is required for this to work well.
I have a PRI terminated in a TE110XP card on my Asterisk box. Right now we are using a separate analog line for faxing, but (for a variety of reasons) I would like to switch to sending and receiving faxes over the PRI via Asterisk. What's the recommended way to do this? The three obvious options I can think of are: 1. Connect the fax machine to an ATA and have it speak SIP or IAX to * 2. Fit a TDM400P with FXS linecard into the * box and connect the fax machine to it directly. 3. Replace the TE110XP with a multispan E1 card, connect a channel bank to the second span, and plug the fax machine into that. Option 3 can be ruled out immediately for us due to cost. Option 2 is quite appealing, but I've previously been told that running multiple Zap cards in a single machine is not a good idea. Option 1 seems like the cheapest and easiest, but I have no idea how reliably faxing will work over an ATA. Thanks for any insight. p. _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
