Maybe I'm off on a tangent with this ??? Maybe its just terminology (I stand to be corected pls).
On Mon, 25 Aug 2003 10:10:24 -0500 (CDT), Mark Spencer wrote: >> How does the portmaster distinguish between an incoming ISDN call >> and incoming analog call? I know this can be done, my local ISP >> can handle ISDN and analog calls on the same phone number and it >> must know when the call comes in. > >You could look for HDLC framing... I would have thought that the portmaster knows how to answer the call according to the bearer information passed on the "D" channel from the CO ? >> Whatever method the portmaster uses to tell those apart should be >> applicable to * to disable the echo cancel. This might be as >> simple as "voice" versus "data" call (is that info provided by >> the PSTN?). Is the echo cancel needed on voice ISDN calls? I >> can live with no support for voice ISDN calls (can imagine why I >> would ever get one). > >You could also try to look at voice vs. data, yah. > If the "D" channel information equals a "voice" call, the Access server woudl normally switch in a modem, I think the real problem with ISDN4Linux is that it was written "data centric", it would problably be quite easy (for someone with the appropriate skills) to come up with a patch to default echo cancellation except when its a data-type call. Unfortunately the voice was really a tack on... _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
