Allo.com 2aCP8e series Panduan Instalasi Cepat - Halaman 15

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8 Port PRI Card- Quick Installation Guide

To install asterisk give the following commands:

[root@pbx1 asterisk-11.4.0]#. /configure #make

# make install

# make config

If this is your first Asterisk Install, you should install the sample configuration files, to do this run:

# make samples

4.4 Enable/Disable Hardware Echo Canceller

If the PRI Card comes with hardware echo cancellation, we need to do the following

settings to be enabled.

By default hardware echo canceller is loaded when dahdi service start

There are two settings need to be configured to use hardware echo cancellation module.

1. Set the option "echocanceller=none" for all spans in /etc/dahdi/system.conf.

For example configuring span-1

# Span 1: ALLO2/0/1 "T2XXP (PCI) Card 0 Span 1" (MASTER)

span=1,1,0,ccs,hdb3,crc4

# termtype: te

bchan=1-15,17-31

dchan=16

echocanceller=none

2.Echo Cancellation is enabled by default in chan_dahdi.conf by the option "echocancel=yes"

and its length in taps.

By default, it is set to "yes, "We have to set these option as "no".

For example:

echocancel = no

Echocancelwhenbridge=no

If Hardware Echo canceller module present and "echocanceller" for all spans in

/etc/dahdi/system.conf is set to yes, might cause the bad voice quality.

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