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, jtdjtd@mtnl.net.in 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.