On 02/18/2010 03:40 PM, [email protected] wrote: > Hi, > > I am trying to fix a Asterisk setup with buggy (POTS) Fax machines. The > setup consists of the following components: > > - A Digium TE121 for connectiong to E1 ISDN > - Debian box with Asterisk 1.4 > - Grandstream GXW-4008 SIP ATA to which the Fax machines connect > > I am aware of the problems with this type of ISDN<-> Asterisk<-> SIP > ATA<-> Fax machine installations, e.G. different "clock source" of ISDN > and the ATA, ethernet timing issues, etc. So it's no suprise that i > encounter the usual problems: No reliable transmission of faxes, errors > and aborts with multiple page faxes, ... > > Unfortunately the installtion is allready completed and purchasing new > hardware is not an option. Thus i have come up with the following idea > und need some small pointer if this is even possible: > > remote<=whatever=> PSTN<=ISDN=> Digium<--> Asterisk<--> t38modem > <=Ethernet=> Grandstream<=POTS=> local > FAX E1 TE121 1.4 > SIP GXW-4008 FAX > machine > t38 > > Is it possible to decouple the internal Fax communication from ISDN > using t38modem or as an alternative "Fax For Asterisk", perhaps in > conjunction with HylaFAX? > If you are trying to get from the PSTN to a FAX machine on an ATA neither Fax for Asterisk or HylaFAX will be of much help. You need a T.38 gateway function running in the Asterisk box to talk to the ATA. There are patches around for adding that function to Asterisk, but its not in the standard distribution. > I was unable to find any current information about theese subjects on > the www. Most postings/articles are 4-6 years old and state that it's > impossible, but this was way before t38modem and "Fax for Asterisk". I > would be really grateful if anybody could come up with some current > information, howtows, etc. > 4-6 was before Fax for Asterisk, but several options for faxing to and from a file, including t38modem, have existed for a long time. Digium has just been extremely slow integrating a T.38 gateway function into the Asterisk distribution.
Steve -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
