There seem to have been many discussions about this, so sorry if this is boring. Can one connect a "standard" fax machine (or fax modem) to an analog port on a TDM400p (as if it were an analog phone, say) and expect it to work reliably? For sending, that is. Detecting and "routing" the call is another subject (for me). Seems it "should", but does not. At least not for me. joe a.
Is your carrier delivering service via a TDM circuit? It has been our experience that you will get far more reliable fax performance via the method you describe (analog device terminated to a port on a FXS line card) than attempting to use an ATA on the LAN. However, if your carrier is a SIP or IAX trunking provider, your reliability concerns are on the other side of your SIP switch. Bryan Johns Partner Shelton | Johns 1805 Old Alabama Road Suite 200 Roswell, GA 30076 USA Office: 678.248.2637 FindMe: 678.229.1809 Email: bryan@sheltonjohns.com On Apr 6, 2007, at 8:39 AM, Joe Acquisto wrote:> There seem to have been many discussions about this, so sorry if > this is boring. > > Can one connect a "standard" fax machine (or fax modem) to an > analog port on a TDM400p (as if it were an analog phone, say) and > expect it to work reliably? > > For sending, that is. Detecting and "routing" the call is another > subject (for me). > > Seems it "should", but does not. At least not for me. > > joe a. > > _______________________________________________ > --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-------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20070406/ac645471/attachment.htm
AFAIK, the FAX targets are normal FAX machines, on the PSTN. What happens is, there appears to be a dial out, and a FAX negotiation, but it always fails. joe a. "Bryan M. Johns" <bryan@sheltonjohns.com> Wrote: 4/6/2007 8:49 AM:> Is your carrier delivering service via a TDM circuit? > > It has been our experience that you will get far more reliable fax > performance via the method you describe (analog device terminated to > a port on a FXS line card) than attempting to use an ATA on the LAN. > However, if your carrier is a SIP or IAX trunking provider, your > reliability concerns are on the other side of your SIP switch. > > Bryan Johns > Partner > > Shelton | Johns > 1805 Old Alabama Road > Suite 200 > Roswell, GA 30076 > USA > Office: 678.248.2637 > FindMe: 678.229.1809 > Email: bryan@sheltonjohns.com > > > On Apr 6, 2007, at 8:39 AM, Joe Acquisto wrote: > >> There seem to have been many discussions about this, so sorry if >> this is boring. >> >> Can one connect a "standard" fax machine (or fax modem) to an >> analog port on a TDM400p (as if it were an analog phone, say) and >> expect it to work reliably? >> >> For sending, that is. Detecting and "routing" the call is another >> subject (for me). >> >> Seems it "should", but does not. At least not for me. >> >> joe a. >> >> _______________________________________________ >> --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
Tzafrir Cohen <tzafrir.cohen@xorcom.com> Wrote: 4/6/2007 9:52 PM:> On Fri, Apr 06, 2007 at 03:19:16PM -0400, Joe Acquisto wrote: > >> zttest does not exist on this system, Suse 10 based. IIRC, I never >> found the file(s) needed to compile it. > > Do you actually have a timing source? > > head -c 0 /dev/zap/pseudo > > Do you get input from there in a resonable time? > > time head -c 8192 /dev/zap/pseudo >Only returns to prompt for each of those. No output to screen. joe a.
On Sat, Apr 07, 2007 at 07:47:12AM -0400, Joe Acquisto wrote:> Tzafrir Cohen <tzafrir.cohen@xorcom.com> Wrote: 4/6/2007 9:52 PM: > > On Fri, Apr 06, 2007 at 03:19:16PM -0400, Joe Acquisto wrote: > > > >> zttest does not exist on this system, Suse 10 based. IIRC, I never > >> found the file(s) needed to compile it. > > > > Do you actually have a timing source? > > > > head -c 0 /dev/zap/pseudo > > > > Do you get input from there in a resonable time? > > > > time head -c 8192 /dev/zap/pseudo > > > > Only returns to prompt for each of those. No output to screen.The second one must have given some output. If the first one gives no errors, you probably have at least a semi-functioning timing source. -- Tzafrir Cohen icq#16849755 jabber:tzafrir@jabber.org +972-50-7952406 mailto:tzafrir.cohen@xorcom.com http://www.xorcom.com iax:guest@local.xorcom.com/tzafrir
Tzafrir Cohen <tzafrir.cohen@xorcom.com> Wrote: 4/7/2007 8:24 AM:> On Sat, Apr 07, 2007 at 07:47:12AM -0400, Joe Acquisto wrote: >> Tzafrir Cohen <tzafrir.cohen@xorcom.com> Wrote: 4/6/2007 9:52 PM: >> > On Fri, Apr 06, 2007 at 03:19:16PM -0400, Joe Acquisto wrote: >> > >> >> zttest does not exist on this system, Suse 10 based. IIRC, I never >> >> found the file(s) needed to compile it. >> > >> > Do you actually have a timing source? >> > >> > head -c 0 /dev/zap/pseudo >> > >> > Do you get input from there in a resonable time? >> > >> > time head -c 8192 /dev/zap/pseudo >> > >> >> Only returns to prompt for each of those. No output to screen. > > The second one must have given some output. If the first one gives no > errors, you probably have at least a semi-functioning timing source.Yes, sorry, left out "time", output follows: foo:~ # time head -c 8192 /dev/zap/pseudo real 0m1.029s user 0m0.000s sys 0m0.004s foo:~ # joe a
On Sat, Apr 07, 2007 at 08:42:59AM -0400, Joe Acquisto wrote:> Tzafrir Cohen <tzafrir.cohen@xorcom.com> Wrote: 4/7/2007 8:24 AM: > > On Sat, Apr 07, 2007 at 07:47:12AM -0400, Joe Acquisto wrote: > >> Tzafrir Cohen <tzafrir.cohen@xorcom.com> Wrote: 4/6/2007 9:52 PM: > >> > On Fri, Apr 06, 2007 at 03:19:16PM -0400, Joe Acquisto wrote: > >> > > >> >> zttest does not exist on this system, Suse 10 based. IIRC, I never > >> >> found the file(s) needed to compile it. > >> > > >> > Do you actually have a timing source? > >> > > >> > head -c 0 /dev/zap/pseudo > >> > > >> > Do you get input from there in a resonable time? > >> > > >> > time head -c 8192 /dev/zap/pseudo > >> > > >> > >> Only returns to prompt for each of those. No output to screen. > > > > The second one must have given some output. If the first one gives no > > errors, you probably have at least a semi-functioning timing source. > > Yes, sorry, left out "time", output follows: > > foo:~ # time head -c 8192 /dev/zap/pseudo > > real 0m1.029sApproximately 1 second.> user 0m0.000s > sys 0m0.004s > foo:~ #So your timing source is basically working. -- Tzafrir Cohen icq#16849755 jabber:tzafrir@jabber.org +972-50-7952406 mailto:tzafrir.cohen@xorcom.com http://www.xorcom.com iax:guest@local.xorcom.com/tzafrir