On 24/08/11 09:01, Sébastien Gay wrote:
Hi,

Thank you for your answers.

@Alex
The card is a Digium  TDM400P with 1 FXS and 3 FXO :

active=yes
alarms=OK
description=Wildcard TDM400P REV I Board 5
name=WCTDM/4
manufacturer=Digium
devicetype=Wildcard TDM400P REV I
location=PCI Bus 00 Slot 07
basechan=1
totchans=4
irq=17
type=analog
port=1,FXS
port=2,FXO
port=3,FXO
port=4,FXO

@ François
I have tried some options in freetdm:
<param name="answer-polarity-reverse" value="true" />

<param name="hangup-polarity-reverse" value="true" />

But the problem persists
@Dario Garcia

I did not know the option tone_detect, I'll do some tests.


Thank you again for your help.


Sébastien,

Sounds like an issue I have been having. I wanted to have FS only act as a voicemail box, with the incoming land line connecting to both the FXO port and analog phones via a splitter. I wanted the voicemail to only pick up after 30s of ringing, however even if the incoming line had stopped ringing (and a polarity reverse was seen) the dialplan would still execute the VM and thus record a few seconds of dialtone. I saw the polarity reversal when the line stopped ringing but FS still claimed it was too close the the previous one even after more than 20s (the reversal time limit is set to something like 200ms) and did not hang up.

The VM would also kick in even when the analog phone was on a call after being picked up. There appears to be no way to test if an incoming analog line is still ringing or not (you can't do tone_detect here as the line is onhook).


Dialplan:

<include>
  <extension name="public_ftdm">
    <condition field="source" expression="freetdm">
        <action application="sleep" data="30000"/>
        <action application="answer"/>
        <action application="voicemail" data="default ${domain_name} 1005"/>
    </condition>
  </extension>
</include>

However if I transfer the call to a SIP extension, remove the sleep and let the extension deal with the VM then it seems to work OK. Obviously this means my analog phones only ring for a moment though.

Alex

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