Hi, crew You might not be the best group to ask (and if so, please let me know), but I recently purchased a chinese clone of the Sangoma TDM410P 4port analogue telephony card (1 FXO & 3 FXS), and I need some advice on it's setup.
I have Asterisk 18.1.0 installed (under 64bit Slackware Linux 14.2), and
the correct DAHDI 2.11.1 drivers, and the card mostly works; I can call
between stations properly. I have two outstanding issues:
1) the FXS ports don't seem to supply the proper current to activate the
ringers on my (admittedly 30-year-old) analogue phones, and
2) the FXO (for the most part) reports a RED alarm when connected to the
PSTN (at my demarkation point).
For problem 1, I've encountered reference to the "boostringer" option on
the wctdm24xxp driver. I haven't tried it yet. FWIW, the TDM410P clone
does not have the additional power-supply connection available on the
original device; I don't know that the boostringer option /can/ do
anything.
As for problem 2, I /have/ managed to complete one incoming call over
this FXO; it stayed out of alarm long enough to do that. However, once
it goes into alarm, I can neither make outgoing calls, nor accept incoming
calls. So the alarm condition needs fixing. I suspect that part of the issue
is that I connect to the back-end of a phone-based security-alarm system,
which might influence the electrical characteristics of the FXO interface.
Additionally, as I'm just trying this system out, I'm using an over-long
extension between it and the POTS connection.
Does anyone have any suggestions on how to address my two issues?
I appreciate any help you can give.
Thanks
--
Lew Pitcher
"In Skills, We Trust"
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