Im dying to know why im having echo in my calls!

dr_x · March 21, 2012, 5:59pm

hi , im suffering from echo from alog time ago.
here is my details system details:

Kernel
Linux(i386)-2.6.18-238.12.1.el5

Elastix
elastix-2.2.0-14
elastix-firstboot-2.2.0-5
elastix-system-2.2.0-14
elastix-email_admin-2.2.0-9
elastix-vtigercrm-5.1.0-8
elastix-extras-2.0.4-4
elastix-asterisk-sounds-1.2.3-1
elastix-my_extension-2.2.0-5
elastix-agenda-2.2.0-5
elastix-a2billing-1.8.1-16
elastix-addons-2.2.0-4
elastix-im-2.0.4-2
elastix-pbx-2.2.0-14
elastix-security-2.2.0-7
elastix-reports-2.2.0-6
elastix-fax-2.2.0-4

RounCubeMail
RoundCubeMail-0.3.1-10

Mail
postfix-2.3.3-2.3.el5_6
cyrus-imapd-2.3.7-12.el5_7.1

IM
openfire-3.5.1-2

FreePBX
freePBX-2.8.1-7

Asterisk
asterisk-1.8.7.0-0
asterisk-perl-0.10-2
asterisk-addons-1.8.7.0-0

FAX
hylafax-4.3.10-2rhel5
iaxmodem-1.2.0-1.1

DRIVERS
dahdi-2.4.1.2-5
rhino-0.99.4-2.rc1
wanpipe-util-3.5.23-1

my hardware card is
Span # 1: ATCOM -1600P/16 “ATCOM AX1600P/800P Board 17” (MASTER)

here is another pc hardware info

im suffering from random echo calls reioccurs during calls.
i couldnt register any echo during internal calls .
most of echo occurs when external calls dial our numbers.
what could the problem of echo ???
some times the echo is acceptable and some times the echo can be annoying .

another information:
i have 6 dadhi lines , one for fax , and i could hear the echo at all of my dadhi lines .

in my network:
using mix of yeahlink t28 phones , grandstream 2110 hardphones
, softphones using zoiper software. both “upgraded for the last firmware” ,and one ATA adapter .

im using switch netgear and cisco linksys router.

wish this info help to determine the main reson of this issue

im ready for any more details to solve this problem .

wish to help me

thanks alot

regards

SkykingOH · March 21, 2012, 6:50pm

Echo on analog lines is caused by impedance mismatches.

You need to use fxotune utility to set levels on trunks.

dr_x · March 21, 2012, 6:54pm

welcome ,

could you tell me more information about fxotune utility ?

and are you sure that this is an analog line mismatch issue?

regards.

SkykingOH · March 22, 2012, 12:44am

Suggest you read the DAHDI manual and google fxotune. You can’t seriously expect me to regurgitate the manual.

Echo on analog lines is caused by mismatch.

gwinton · March 22, 2012, 6:32pm

You might have better luck asking this on the Elastix fourms. It looks by the picture that you provided that you can configure it in the utility. Also look in the forums over at asterisk.org. Good Luck

Im dying to know why im having echo in my calls!

hi , im suffering from echo from alog time ago. here is my details system details:

DRIVERS dahdi-2.4.1.2-5 rhino-0.99.4-2.rc1 wanpipe-util-3.5.23-1

my hardware card is Span # 1: ATCOM -1600P/16 “ATCOM AX1600P/800P Board 17” (MASTER)

im suffering from random echo calls reioccurs during calls. i couldnt register any echo during internal calls . most of echo occurs when external calls dial our numbers. what could the problem of echo ??? some times the echo is acceptable and some times the echo can be annoying .

another information: i have 6 dadhi lines , one for fax , and i could hear the echo at all of my dadhi lines .

in my network: using mix of yeahlink t28 phones , grandstream 2110 hardphones , softphones using zoiper software. both “upgraded for the last firmware” ,and one ATA adapter .