asterisk users - Apr 2006 - some problems with asterisk and E1

Hi,

I am using asterisk 1.2.5 and have some problems with asterisk connected with 
an E1 card to our PRI. Dialling in and out generally works. When someone dials 
in from a mobile phone, all numbers are sent as a block, and the called 
extension rings as intended. when someone picks up his phone handset, waits 
for a dial tone, and then dials in manually, the call will be redirected to 
the central number and not to the dialled extension. I have three digits long 
extensions here. After entering the first number of the extension, the caller 
will start hearing the ring tone. Asterisk doesn't seem to wait for the last
two digits. As there are not extensions configured with only one digit, they 
are redirected to the central number. The same happens with some slower 
dialling ISDN phones calling in. 
Is there a place where I can configure asterisk to wait for all three digits 
before answering? or after receiving the first or second digit that asterisk 
waits for one or two seconds for another digit?


The card I have instlled is
00:0b.0 Network controller: Tiger Jet Network Inc. Tiger3XX Modem/ISDN 
interface

zttool says it is a Digium Wildcard TE110P T1/E1 Card 0

I used AMP to configure asterisk, here my zapata.conf:


; Zapata telephony interface
;
; Configuration file

[trunkgroups]

[channels]

language=en
context=from-pstn
;signalling=fxs_ks
signalling=pri_cpe ; pri_cpe = PRI slave ; pri_net = PRI master
switchtype=euroisdn

rxwink=300 ; Atlas seems to use long (250ms) winks
;
; Whether or not to do distinctive ring detection on FXO lines
;
;usedistinctiveringdetection=yes
callerid=asreceived

usecallerid=yes
nationalprefix=0
internationalprefix=00
localprefix=03381
callerid=asreceived
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
echotraining=400
rxgain=0.0
txgain=0.0
group=1
callgroup=1
pickupgroup=1
immediate=no


;faxdetect=both
faxdetect=incoming
;faxdetect=outgoing
;faxdetect=no

;Include genzaptelconf configs
#include zapata-auto.conf

;Include AMP configs
#include zapata_additional.conf
channel => 1-15,17-31


here is my zapata-auto.conf:
callerid=asreceived

the zapata_additional.conf is empty.

any help appreciated.

kind regards
Sebastian