G711 is absolutely unreliable to transmit fax. RTT has to be perfect, no jitter at all, so basically, LAN recommended. T38 was invented for that reason. I personally have more and more success with T38, with FS doing passthrough only: -from Patton endpoint (SN4961 and others) to Dialogic SS7 gateway -from Mediatrix endpoints (4102) to Dialogic SS7 gateway -from Zoiper softphone to Dialogic SS7 gateway David Ponzone Direction Technique email: david.ponzone@ipeva.fr tel: 01 74 03 18 97 gsm: 06 66 98 76 34 Service Client IPeva tel: 0811 46 26 26 www.ipeva.fr - www.ipeva-studio.com Ce message et toutes les pièces jointes sont confidentiels et établis à l'intention exclusive de ses destinataires. Toute utilisation ou diffusion non autorisée est interdite. Tout message électronique est susceptible d'altération. IPeva décline toute responsabilité au titre de ce message s'il a été altéré, déformé ou falsifié. Si vous n'êtes pas destinataire de ce message, merci de le détruire immédiatement et d'avertir l'expéditeur. Le 21/05/2011 à 23:01, Meftah Tayeb a écrit :
T.38 is good but is a pain. i strongly suggest you to pass it through PCMU (G.711U) codec, sunse you're willing to use E1 boards no transcoding required and less ressources thank you On 21/05/2011 21:17, Chris Cureau wrote:
Hi, everyone!
I am trying to implement a workable fax solution between two FreeSwitch servers. This is what I had in mind so far:
T1 PRI <--> Sangoma A102 <--> FreeSwitch (host) <--> T.38 SIP (internet) <--> FreeSwitch (remote) <--> Sangoma B600D <--> FAX machine
I am assuming here that the T.38 protocol between FreeSwitch servers will ensure that the data transfers between the two sites successfully. Would this actually be a two step process, where one server receives the fax (say, from the PRI) on one call, then sends to the second server, and the second server initiates a second call to the fax machine?
The object here is to successfully pass faxes using SIP. Is there a better way to handle this?
Thanks in advance, Chris
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-- Meftah Tayeb inum: +883510001288000 phone: +13477595883 _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org