Incoming PSTN not answering call

Zaptel, 1.4.6
Asterisk 1.4.13

TDM400P installed with Single Module connected to a BT Analog Line.

Have had the problem for about a week now. I am able to dial out and make calls with no issues. When receiving a call I get the following :-

-- Executing [s@incoming:1] NoOp("Zap/1-1", "") in new stack
-- Executing [s@incoming:2] GotoIf("Zap/1-1", "0?12|s") in new stack
-- Executing [s@incoming:3] AGI("Zap/1-1", "working.pl") in new stack
-- Launched AGI Script /var/lib/asterisk/agi-bin/working.pl
-- AGI Script working.pl completed, returning 0
-- Executing [s@incoming:4] GotoIf("Zap/1-1", "0?s|11") in new stack

== Auto fallthrough, channel ‘Zap/1-1’ status is ‘UNKNOWN’
– Hungup ‘Zap/1-1’

[code] Zapata.conf

[channels]
language=en
context=incoming
signalling=fxs_ks
callerid=asreceived
busydetect=no
;rxwink=300 ; Atlas seems to use long (250ms) winks
hanguponpolarityswitch=yes
usecallerid=yes
cidsignalling=v23
;cidstart=usehist
cidstart=ring
;cidstart=polarity
hidecallerid=no
callwaiting=yes
usecallingpres=yes
sendcalleridafter=0
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
;rxgain=17
;txgain=5
;
group=1
callgroup=1
pickupgroup=1
immediate=no
musiconhold=default
channel => 1
[/code]

Your problem is in your extention.conf can u plz post your extention.conf

Thanks for the reply however I’ve found what looks like the solution.

I’ve added : ‘autofallthrough=no’ to my extensions.conf