Voice quality of DE410P x 2 in dual Xeon 2.66G

does your card labeled firmware 1.2?

what kind of cpu/motherboard you are using?

I tried to change the server to Asus DSBVDX and tested. The result remain the same choppy sound. Sound quality is a little bit better if only one card in one server. One way choppy sound still occurs if number of calls greater than 60. On way means only callee listen the choppy sound when outbound and caller listen the choppy sound when inbound.

Any other suggestion ?

The follows are version & figures in DSBVDX:

Asterisk: 1.4.24-1
dahdi: 2.1.0.4-7

cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7
0: 8667755 8664150 8651436 8668819 8666347 8667023 8687822 8670245 IO-APIC-edge timer
1: 18 14 14 18 15 10 16 14 IO-APIC-edge i8042
8: 0 0 1 1 0 1 0 0 IO-APIC-edge rtc
9: 0 0 0 0 0 0 0 0 IO-APIC-level acpi
14: 77960 77750 77462 77404 77711 78023 77531 77548 IO-APIC-edge ide0
50: 39374 39413 39448 39915 39515 39551 39768 39715 IO-APIC-level libata
58: 16707132 0 0 0 0 0 0 0 PCI-MSI eth0
169: 17324098 17327279 17338256 17322449 17325018 17323998 17303469 17321083 IO-APIC-level wct4xxp, wct4xxp
NMI: 0 0 0 0 0 0 0 0
LOC: 69326772 69326716 69305413 69321371 69323745 69323745 69319461 69319459
ERR: 0
MIS: 0

dahdi_test
Opened pseudo dahdi interface, measuring accuracy...
100.000% 99.819% 99.907% 99.890% 99.980% 99.988% 99.996% 99.712%
99.889% 99.974% 99.991% 99.998% 99.722% 99.976% 99.835% 99.997%
99.990% 99.800% 99.996% 99.978% 99.994% 99.992% 99.996% 99.985%
99.977% 99.995% 99.996% 99.992% 99.911% 99.998% 99.996% 99.993%
99.906%
--- Results after 33 passes ---
Best: 100.000 -- Worst: 99.712 -- Average: 99.944529, Difference: 100.044670

/etc/dahdi/system.conf

# Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" (MASTER) B8ZS/ESF ClockSource
span=1,1,0,esf,b8zs
# termtype: te
bchan=1-23
dchan=24
#echocanceller=mg2,1-23

# Span 2: TE4/0/2 "T4XXP (PCI) Card 0 Span 2"
span=2,2,0,esf,b8zs
# termtype: te
bchan=25-47
dchan=48
#echocanceller=mg2,25-47

# Span 3: TE4/0/3 "T4XXP (PCI) Card 0 Span 3"
span=3,3,0,esf,b8zs
# termtype: te
bchan=49-71
dchan=72
#echocanceller=mg2,49-71

# Span 4: TE4/0/4 "T4XXP (PCI) Card 0 Span 4"
span=4,4,0,esf,b8zs
# termtype: te
bchan=73-95
dchan=96
#echocanceller=mg2,73-95

# Span 5: TE4/1/1 "T4XXP (PCI) Card 1 Span 1"
span=5,5,0,esf,b8zs
# termtype: te
bchan=97-119
dchan=120
#echocanceller=mg2,97-119

# Span 6: TE4/1/2 "T4XXP (PCI) Card 1 Span 2"
span=6,6,0,esf,b8zs
# termtype: te
bchan=121-143
dchan=144
#echocanceller=mg2,121-143

# Span 7: TE4/1/3 "T4XXP (PCI) Card 1 Span 3"
span=7,7,0,esf,b8zs
# termtype: te
bchan=145-167
dchan=168
#echocanceller=mg2,145-167

# Span 8: TE4/1/4 "T4XXP (PCI) Card 1 Span 4"
span=8,8,0,esf,b8zs
# termtype: te
bchan=169-191
dchan=192
#echocanceller=mg2,169-191

# Global data

loadzone = us
defaultzone = us

/etc/asterisk/chan_dahdi.conf

[trunkgroups]

[channels]

pridialplan=national
signalling=pri_cpe
usecallerid=yes
hidecallerid=no
callwaiting=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
;echocancel=yes
;echocancelwhenbridged=yes
;echotraining=800
rxgain=0.0
txgain=0.0
group=1
callgroup=1
pickupgroup=1
callprogress=no
callerid=asreceived
faxdetect=no

;Uncomment these lines if you have problems with the disconection of your analog lines
;busydetect=yes
;busycount=3

immediate=no

; Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" (MASTER)
group=1
switchtype=dms100
signalling = pri_cpe
context=from-zap
channel => 1-23

; Span 2: TE4/0/2 "T4XXP (PCI) Card 0 Span 2"
group=2
switchtype=4ess
signalling = pri_cpe
context=from-zap2
channel => 25-47

; Span 3: TE4/0/3 "T4XXP (PCI) Card 0 Span 3"
group=2
switchtype=4ess
signalling = pri_cpe
context=from-zap2
channel => 49-71

; Span 4: TE4/0/4 "T4XXP (PCI) Card 0 Span 4"
group=2
switchtype=4ess
signalling = pri_cpe
context=from-zap2
channel => 73-95

; Span 5: TE4/1/1 "T4XXP (PCI) Card 1 Span 1"
group=2
switchtype=4ess
signalling = pri_cpe
context=from-zap2
channel => 97-119

; Span 6: TE4/1/1 "T4XXP (PCI) Card 1 Span 2"
group=2
switchtype=4ess
signalling = pri_cpe
context=from-zap2
channel => 121-143

; Span 7: TE4/1/1 "T4XXP (PCI) Card 1 Span 3"
group=2
switchtype=4ess
signalling = pri_cpe
context=from-zap2
channel => 145-167

; Span 8: TE4/1/1 "T4XXP (PCI) Card 1 Span 4"
group=2
switchtype=4ess
signalling = pri_cpe
context=from-zap2
channel => 169-191

what linux you installed? could you try latest Fedora Core?

and what kind of business you are running on that server? you should take care to avoid heavy database access on it.

The operating system is Elastix 1.1. We try it for telesales program.

Thanks

Do you mean that we can not use more than one card in a server in order to avoid heavy loading?

hi:
there is no problem that you put two cards. can you try to bind the cards to one cpu, and let other applications running under other cpus?
regards!
James.zhu