[Asterisk-Users] Asterisk won't answer incoming analog line

[Rich Adamson]

> I had to return my TDM11B because it put the PSTN line 'off hook' the moment I 
> plugged it in and wouldn't hang it up.
> 
> The new card seems to work because I can actually make an outgoing call from  
> the FXO port to my cell phone, so I'm pretty happy about that.
> 
> But Asterisk doesn't recognize incoming calls from the PSTN.  If I dial my 
> home phone from my cell phone asterisk does not even recognize the ring.
> 
> Below is (I think) the relevant config files.  My question is:  How do I make 
> asterisk recognize when the phone is ringing?
> 
> Thanks in advance
> 
> lane
> 
> ;zaptel.conf
> fxsks=4
> fxoks=1
> loadzone = us
> defaultzone=us
> ;
> 
> ;zapata.conf
> 
> [channels]
> language=en
> rxwink=300
> usecallerid=yes
> cidsignalling=bell
> hidecallerid=no
> callwaiting=yes
> usecallingpres=yes
> threewaycalling=yes
> cancallforward=yes
> callreturn=yes
> echocancel=yes
> echocancelwhenbridged=yes
> rxgain=0.0
> txgain=0.0
> callgroup=1
> pickupgroup=1
> immediate=no
> signalling => fxo_ks
> channel => 1
> signalling => fxs_ks
> channel => 4
> 
> ; extensions.conf
> [globals]
> CONSOLE=Zap/1
> TRUNK=Zap/4
> TRUNKMSD=1
> 
> [trunklocal]
> exten => _9NXXXXXX,1,PlayBack(vm-dialout)
> exten => _9NXXXXXX,2,Dial(${TRUNK}/${EXTEN:${TRUNKMSD}})
> exten => _9NXXXXXX,3,Congestion
> 
> [incoming]
> exten => s,1,Answer
> exten => s,2,DigitTimeout,5
> exten => s,3,ResponseTimeout,10
> exten => s,4,Playback(tt-weasels)
> ;
> [local]
> ignorepat => 9
> include => trunklocal
> ;
> [default]
> include=incoming
> include=local

In the zapata.conf definitions for the two channels, do something like this:

immediate=no
signalling => fxo_ks
channel => 1
context=incoming	; <==== where to send incoming calls within extensions.conf
signalling => fxs_ks
channel => 4

Add the above statement, and then your dialplan context 'incoming'
will be executed when receiving a call.

It might also help the learning process if you reorganize those
two channels so that you can see which parameters are being applied
to which channels. Something like this says exactly the same thing
as above:

[channels]
language=en
busydetect=yes
busycount=6
cidsignalling=bell
cidstart=ring
callerid=asreceived

; this section is for the fxs port (telephone instrument)
context=fxs-line
rxwink=300
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
threewaycalling=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
rxgain=0.0
txgain=0.0
callgroup=1
pickupgroup=1
immediate=no
signalling => fxo_ks
channel => 1

; this section is for the fxo port (pstn line)
context=incoming	; <==== where to send incoming calls within extensions.conf
rxwink=300
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
threewaycalling=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
rxgain=0.0
txgain=0.0
callgroup=1
pickupgroup=1
immediate=no
signalling => fxs_ks
channel => 4

Now if you look over the parameters within each section, you've got
to ask yourself some questions.
- Why would you have these parameters on a fxs port (telephone)?
context=fxs-line
rxwink=300
usecallerid=yes
cidsignalling=bell
hidecallerid=no
callwaiting=yes
usecallingpres=yes
threewaycalling=yes
cancallforward=yes
callreturn=yes
The above parameters are associated with fxo ports (not fxs ports).
Remove them.

- Why do you have:
rxwink=300
in either of the two contexts above?  If you're interfacing to a US
pstn line, I doubt you really need that parameter in either channel.

- In the Channel => 4 section, you will probably want:
echotraining=yes
 or
echotraining=800
to improve the echo canceller operation. 800 works best for my system.

- You'll probably want to add:
busydetect=yes
busycount=6
in the top level [channels] section to help avoid voices falsely
causing dropped pstn calls. (Some voices might be interpreted as
dtmf or other tones causing * to drop the call.)

- in the extensions.conf dialplan entry:
[incoming]
exten => s,1,Answer
exten => s,2,DigitTimeout,5
exten => s,3,ResponseTimeout,10
exten => s,4,Playback(tt-weasels)
you'll probably want to change that last statement to use 'Background'
to play the audio instead of 'Playback'. See the 'show application background'
for details. (Essentially, background allows you dialplan entry to listen
for users to press a key, while the playback ignores user key presses.

Rich