2009/3/17 Olivier <[email protected]> > > > 2009/3/16 Olivier <[email protected]> > > Hi, >> >> I'm rather new to this domain so I may be doing stupid things without >> being concious of that. >> >> I've got a Patton MATA I'm trying to setup as T.38 fax adapter. >> Whenever I connect a fax machine (Dell MFP1815dn) or a phone to it, I can >> successfully send a fax or talk to the other end. >> >> Whenever I connect a fax modem (Dell Inspiron 6400 laptop), I keep getting >> "No signal. Line is busy or disconnect" from Windows XP fax application. >> Whatching SIP trafic from this Patton MATA, I can see no single SIP is >> leaving the box so I'm certain issue relates to analog line settings but I'm >> mostly lost with things like Ring Polarity, Ring settings and so on. >> >> I tried to mimic settings from an SPA3102 with which I can either fax from >> fax machine or fax application but I'm unsuccessful at the moment. >> >> >> 1. Can you explain what is going on ? >> 2 What would you say reading this : >> Ring waveform: trapezoid >> Ring frequency: 20 >> Ring voltage: 85 > > Reducing voltage to 60 made the fax-modem reply. This is a bit strange as this value is quite different from the one working with SPA3102.
>> FXS input gain: -6 >> FXS output gain: -6 >> (I copied those values from SPA3102 into MATA) > > >> >> Best regards > > > > Changing FXS input gain and FXS output gain from -6 to -12 improved things > as I could fax out in T.38 with both ATAs and fax endpoints ! > > But for incoming faxes, modem connected to M-ATA remains silent and idle > whenever the M-ATA receives a fax call : I can see incoming SIP signal > arriving into the ATA but it seems no analog signal is going out from it. > (using SPA3102, faxes are correctly received). > > > How is called the signal an ATA uses when it wants to wake an analog phone > or a fax machine up ? > Is it correct to think the same electrical signal is sent whatever the > analog endpoint is ? > What could explain a phone is ringing at one and a fax modem remains idle ? > > Regards > >
_______________________________________________ -- 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
