We had a similar problem a while back and found that it was being caused by
Hyperthreading. If you are using analogue cards then unfortunately you
need to
disable H/T if you haven't already done so.
You also need to confirm that your fxo/fxs card isn't sharing IRQ's with
anything. Don't trust 'cat /proc/interrupts', use 'lspci -v' instead.
Also got this advice from Digium, although it has never applied to us:
If you are running an IDE hard drive please verify that you are using
DMA mode with a UDMA setting of no lower than 2 or higher than 3. UDMA
mode 2 is ATA33. UDMA mode 3 is ATA44. This can be done using hdparm.
We suggest using "hdparm -d 1 -X udma2 -c 3 /dev/[IDE Device]". You
can check the status using "hdparm /dev/[IDE Device]" and "hdparm -i
/dev/[IDE Device]". If you make modifications to your IDE hard drive
settings they will only be kept until you reboot.
Not sure if this is what is causing your issues or not, but hopefully it will
help if it is.
Cheers,
Damian Funnell.
FFF Managed Technology Ltd.
60 Cook St
P.O. 6368 Wellesley St
Auckland
t +64 9 356 2911
f +64 9 358 9070
m +64 21 415 297
w www.fff.co.nz
Quoting Health Masters <[EMAIL PROTECTED]>:
We have the same problem lately we thought maybe our upgrade and
testing of the .13 firmware.. but we are running 20 phones on a p4
2.6 w/512 4 PSTN lines on TDM400P and have 3 fat client pc's and 7
pcexpanions ( http://ncomputing.com/ ) running to a fat client. We
did not have the issue on firmware .09 or .12. What firmware are you
using?
Jeff Busch wrote:
This definitely could be the issue. I am running 15 total devices (7
IP500 phones and 7 PC's along with a networked fax/scanner, and the
Asterisk Server) through a single 16 port switch. We run one MS
Access app on almost all the desktops that is a
client/server app that creates a lot of traffic. I will go to the site
tomorrow and make some changes to the topology of the LAN.
Thanks!
Jeff
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Steve
Blair
Sent: Tuesday, November 29, 2005 4:33 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Static on inside end of conversation
Jeff Busch wrote:
You are correct. Inside means the IP Network and Outside means
the PSTN accessible via the Audiocodes MP-108 gateway.
No QoS.
We've seen echo on congested LANs within our Enterprise. I'm not sure if
this fits what your seeing or not. We've placed phones in their own vlan
and added 802.1p QoS to expedite forwarding upto the first hop router
for the outbound call leg and the echo is gone. We did the same for the
inbound call leg also.
Thanks - Jeff
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Steve Blair
Sent: Tuesday, November 29, 2005 4:20 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Static on inside end of conversation
Jeff Busch wrote:
Hello,
I am running the following configuration:
2.8ghz P4 with 1GB of RAM
Audiocodes MP-108 connected to 5 POTS lines Polycom IP-500 phones
[EMAIL PROTECTED] 1.3 (this is Asterisk 1.0.9)
End users are complaining of an echo and static on the inside end (the
internal side), but the outside end of the conversation doeesn't notice
anything.
I'm assuming inside means on the IP network and outside means on
the PSTN which is accessible via a gateway is this correct? If so
do you have QoS enabled on the inside?
Does anyone have any suggestions on troubleshooting / fixing this
problem?
Thanks!
Jeff
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