i've got an X100p and a TDM400 on hand already.
for the CO lines, the X100p works ok with fxsks signaling though there are still strange
things happening every now and again but more testing is on the way.
my real big problem is the DID lines which our telcos call DDI lines; (incoming calls only) i disconnected a running DID line from our PBX and did a bunch of tests on it and found the following:
* line from telco has NO voltage
* the port from pbx is supplying the power(voltage) but no dial tone
*the moment i disconnected the DID line from the PBX port, an alarm is triggered at the telco CO
* i can attach an ordinary analog phone to the PBX PORT, pick up the handset and
send (dial) 4 dtmf digits (being the last 4 digits of our DID number),
the PBX will bridge me to the appropriate extension phone.
* if or when the extension phone picks up, the PBX reverses the polarity on the line
what type of signaling should i be using for such a line?
many thanks in advance, patrick
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