On Monday 04 April 2011 23:25:32 Rony wrote: > On Monday 04 April 2011 10:59 PM, H.S.Rai wrote: > > On Thu, Mar 31, 2011 at 10:08 AM, jtd<[email protected]> wrote: > >> ... It is also possible that the modem is not recognising > >> your incoming ring, in which case you have to set several params > >> in the modem for ring frequency and cadence. > >> Start minicom and dial your fax number. minicom should display > >> RING. > > > > If I am trying BSNL line, minicom showed "ring". > > > > But I am to use it with our EPBX (Alcatel Lucent) for which it > > does not show "ring". > > > > I am held up :-( > > > > Any hint / help will be highly appreciated. > > Fax machines/modems sometimes do not recognise EPABX circuits. > EPABX lines use 21 volts DC and low ring voltages whereas PSTN > lines us 50 volts DC and a 75 volt AC ringer.
However the network (phoneline) interface (usually) has dip switches / jumpers which can be set to overcome this problem. For the modem in question (a tiny USB device) I doubt any such facility would be available for setting voltages. > Try out your config > on a direct line at least for testing and cross checking. + 1 If it does not work it could mean either voltage or different ring cadence. I would suspect the 2nd. Regarding setting ring cadence I will have to google. I knew quite a number of AT commands, but hardly ever use any for the past few years. -- Rgds JTD -- http://mm.glug-bom.org/mailman/listinfo/linuxers
