[Asterisk-Users] Dropped calls from Junghans octo-bri card

[Nelson]

I have an Asterisk system that seems to be randomly dropping calls. The
system is currently running on a Junghanns octo-bri card and one Digium
TDM400b card. The calls seem to be dropped during peak call hours and I
assume that it probably has something to do with congestion (this box
makes/receives about 2500 calls a day). I added the zapata and zaptel
confgurations that I am using below:

#####zapata.conf#####

[channels]

group = 1
echocancel = yes
signalling = fxs_ks
language = en
context = default
overlapdial = yes
immediate = no
channel => 25-27


group = 2
echocancel = yes

switchtype = euroisdn

signalling = bri_cpe_ptmp

overlapdial = yes
immediate = no

pridialplan = local
prilocaldialplan = local
nationalprefix = 0
internationalprefix = 00

context = default

; S/T port 1
channel => 1-2,4-5,7-8,10-11,13-14,16-17,19-20,22-23

#######zaptel.conf######
loadzone=nl
defaultzone=nl
# qozap span definitions
# most of the values should be bogus because we are not really zaptel
span=1,1,3,ccs,ami
span=2,0,3,ccs,ami
span=3,0,3,ccs,ami
span=4,0,3,ccs,ami
span=5,1,3,ccs,ami
span=6,0,3,ccs,ami
span=7,0,3,ccs,ami
span=8,0,3,ccs,ami

bchan=1,2
dchan=3
bchan=4,5
dchan=6
bchan=7,8
dchan=9
bchan=10,11
dchan=12
bchan=13,14
dchan=15
bchan=16,17
dchan=18
bchan=19,20
dchan=21
bchan=22,23
dchan=24

Any help greatly appreciated.