[Asterisk-Users] Missing digits on TDM400P incomplete dial string

[bam]

We are experiencing problems on a FXS interface where the client is dialing 
numbers, but digits are being dropped somewhere from the dial string. 
Typically one or two digits are not being presented. We've tried different 
handsets to no avail, and I am assuming that it is some sort of timing problem.

Are there any parameters I can tweak to try and rectify this?


zapata.conf

context=hardwire
group=3
signalling=fxo_ks
mailbox=8765
callerid="Acme" <8765>
channel=32




extensions.conf

[hardwire]
;
exten => _NXXXXXX,1,SetCallerID(0141411${CALLERIDNUM})
exten => _NXXXXXX,2,CallingPres(3)
exten => _NXXXXXX,3,Dial(Zap/g1/0141${EXTEN})

exten => _0.,1,SetCallerID(0141411${CALLERIDNUM})
exten => _0.,2,CallingPres(3)
exten => _0.,3,Dial(Zap/g1/${EXTEN})

exten => t,1,Hangup                     ; If they take too long, give up.
exten => i,1,Hangup                     ; If they get it wrong, give up