[Asterisk-Users] Zap dropping calls

[Paul Schlie]

I'm running Asterisk CVS-HEAD-05/24/04-17:37:48 on kernel
2.4.25-gentoo-r3.  I have a Digium TDM-400P card with 4 FXO ports.  Here
are the pertinent files:

zaptel.conf:
fxsks=1-4
loadzone = us
defaultzone=us

zapata.conf:
[channels]
context=north_in_pots_vip
group=1
signalling=fxs_ks
usecallerid=no
hidecallerid=no
callwaiting=no
restrictcid=no
threewaycalling=no
echocancel=1
echocancelwhenbridged=no
echotraining=1
rxgain=10.0
txgain=2.0
immediate=no
musiconhold=default
jitterbuffers=4
relaxdtmf=yes
busydetect=yes
callprogress=yes
callerid => 1234567
channel => 1-2

extensions.conf:
[north_in_pots_vip]
exten => s,1,Answer
exten => s,2,Dial(SIP/JGARVEY&SIP/FDNORTH,10,rt)
exten => s,3,Dial(SIP/JGARVEY&SIP/KRAFFERTY&SIP/FDNORTH,10,rt)
exten => s,4,Background(vip_autoattendant)
exten => s,5,Voicemail(u600)
exten => s,6,Hangup

When the SIP phones (Grandstream BudgeTone-100's) answer a call there is
a random chance that the call will get disconnected.  It also happends
on outbound calls.  Sometimes it's within the first minute, sometimes
it's after 10 minutes.  All I ever see on the * console is Hungup
'Zap/1-1'.

Any ideas?