8 Port Pri Card Quick Installation Guide
Content
8 Port PRI Card- Quick Installation Guide
www.allo.com
Version 2.0
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8 Port PRI Card- Quick Installation Guide
Copy Right
Copyright © 2014 Allo. All rights reserved.
No part of this publication may be copied, distributed, transmitted, transcribed, stored in a
retrieval system, or translated into any human or computer language without the prior written
permission of Allo.com. This document has been prepared for use by professional and properly
trained personnel, and the customer assumes full responsibility when using it.
Proprietary Rights
The information in this document is Confidential to Allo and is legally privileged. The information
and this document are intended solely for the addressee. Use of this document by anyone else for
any other purpose is unauthorized. If you are not the intended recipient, any disclosure, copying
or distribution of this information is prohibited and unlawful.
Disclaimer
Information in this document is subject to change without notice and should not be construed as
a commitment on the part of allo.com. And does not assume any responsibility or make any
warranty against errors. It may appear in this document and disclaims any implied warranty of
merchantability or fitness for a particular purpose.
www.allo.com
Version 2.0
2
8 Port PRI Card- Quick Installation Guide
About this manual
This manual describes the Allo product application and explains how to work and use it major
features. It serves as a means to describe the user interface and how to use it to accomplish
common tasks. This manual also describes the underlying assumptions and users make the
underlying data model.
Document Conventions
In this manual, certain words are represented in different fonts, typefaces, sizes, and weights. This
highlighting is systematic; different words are represented in the same style to indicate their
inclusion in a specific category. Additionally, this document has different strategies to draw User
attention to certain pieces of information. In order of how critical the information is to your
system, these items are marked as a note, tip, important, caution, or warning.
Icon
Purpose
Note
Tip/Best Practice
Important
Caution
Warning
o Bold indicates the name of the menu items, options, dialog boxes, windows and functions.
o The color blue with underline is used to indicate cross-references and hyperlinks.
o Numbered Paragraphs - Numbered paragraphs are used to indicate tasks that need to be
carried out. Text in paragraphs without numbering represents ordinary information.
o The Courier font indicates a command sequence, file type, URL, Folder/File name
e.g. www.allo.com
Support Information
Every effort has been made to ensure the accuracy of the document. If you have comments,
questions, or ideas regarding the document contact online support: http://support.allo.com
www.allo.com
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Table of Contents
About this manual .................................................................................................................... 3
Document Conventions ............................................................................................................ 3
Support Information................................................................................................................. 3
1. Introduction ............................................................................................................................. 5
2. Overview .................................................................................................................................. 5
2.1 Hardware Echo Cancellation .............................................................................................. 5
2.2 Identifying Ports ................................................................................................................. 6
2.3 Y-adopter Dongle ............................................................................................................... 7
2.4 Dongle Split End ................................................................................................................. 8
2.5 Slot Compatibility ............................................................................................................... 9
3. Software Configuration ............................................................................................................ 9
3.1 T1/E1 Selection................................................................................................................... 9
3.2 E1/T1 mode settings .......................................................................................................... 9
5.1 Installation of Pre requisite packages: ............................................................................. 11
5.1.1 Installation of LibPRI package .................................................................................... 11
5.2 Installation of Dahdi Driver .............................................................................................. 12
5.3 Installation of Asterisk ...................................................................................................... 13
5.4 Enable/Disable Hardware Echo Canceller ........................................................................ 14
6. Software Configurations ........................................................................................................ 15
7. Appendix- PIN Assignments ................................................................................................... 17
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1. Introduction
The Allo 2aCP8e/2aCP8eL series cards are T1/E1 PRI Cards designed for voice applications. The
Cards series are as follows.
Model No
Product Description
2aCP8e
8 Port PRI PCIe card
2aCP8eL
8 Port PRI PCIe card with Line Echo Cancellation
2. Overview
The Allo 2aCP8e (8 ports PRI Card) series supports industry standard protocols including
Channel Associated Signaling (CAS), SS7 Signaling, PRI switch Compatibility and Interoperable
with Asterisk, FreeSwitch, and Elastix etc.
The 2aCP8eL Series cards are ideal for connecting phones to a channel bank, T1/E1 switches,
or connecting to a legacy PBX. The Y-adapter dongle allows twice the amount of spans to fit
in a single PC slot and taking up less space to allow for more peripherals. Designed to be fully
compatible with existing software applications and integrate fully with Asterisk platform, the
2aCP8eL series cards allow many advanced call features. In this manual, we used 2aCP8eL PCI
Express card. These are identified collectively as the 2aCP8eL series cards throughout this
manual.
2.1 Hardware Echo Cancellation
Users connecting their 2aCP8eL series cards to the PSTN or other devices are likely to be
placing calls. Elimination of this echo is the responsibility of echo cancellation. Allo uses
Octassic DSP based hardware echo canceller with 128ms tail length.
The Allo 2aCP8e (8 ports PRI Card) series cards equipped with Asterisk is to perform softwarebased echo cancellation. Asterisk maintains a number of open source echo cancellers. These
open source echo cancellers provide a moderate level of echo cancellation, but not capable of
dealing with higher levels or more advanced echoes.
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Allo recommends that those users concerned about echo cancellation purchase the hardware
echo cancellation module. It is designed to handle up to 128ms of echo cancellation across all
channels and provides a G.168 compliant echo cancellation solution.
2.2 Identifying Ports
The 2aCP8eL series cards consists of 4 RJ45 Ports and eight status LEDs. The ports are used for
connecting T1, E1, or J1 cables via Y-adapter dongles.
The 2aCP8eL series cards can be used without Y-adaptor dongles, but only spans 1 through
4 will be accessible.
Ports
(1-4)
PCIe Connector
8 Port PRI PCIe card with LEC (2aCP8eL)
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Span
Status
LEDs
8 port PRI Card- Span Status LEDs
2.3 Y-adopter Dongle
The Y-adopter dongles are provided for accessing all 8 spans on the 2aCP8eL series cards. The
following figure helps to identify a dongle and its split end ports.
Y-Adapter Dongle
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2.4 Dongle Split End
Split A
Split B
Dongle Split End
Connection Diagram
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2.5 Slot Compatibility
Check your motherboard to verify that a compatible slot is available for a 2aCP8eL PRI card. To
determine which slots you have on your motherboard.
PCI Express 1-lane (x1) Slot
PCI Express 4-lane (x4) Slot
PCI Express 8-lane (x8) Slot
PCI Express 16-lane (x16) Slot
Motherboard slots
The 2aCP8e series cards work PCIe x1 slot including lane lengths x4, x8, x16
The 2aCP8eL PRI card will fit into above motherboard slots (PCI Express), but cannot fit into
any of the other slots.
3. Software Configuration
3.1 T1/E1 Selection
The 2aCP8eL series cards can be configured for either T1 or E1 mode. The T1/E1 mode may be
specified in the drivers using either the default_linemode= t1 or default_linemode=e1 module
parameter when the drivers are loaded. This will set the mode for all spans on the card.
3.2 E1/T1 mode settings
By default the card is ready to use in E1 mode
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E1 Mode
Add “allo4xxp” at the end of /etc/dahdi/modules, so that while starting dahdi driver Allo card
modules will load automatically.
T1 Mode
To configure the PRI card in T1 signaling mode, please add the following line in the relevant files,
(i) Add “allo4xxp” at the end of /etc/dahdi/modules, so that while starting dahdi driver Allo
card modules will load automatically
(ii) Add “options allo4xxp default_linemode=t1 # for T1 Signaling” at the end of
/etc/modprobe.d/dahdi.conf
4. Hardware Setup
2nd Generation 8 port PRI Card with Dongle Splits
1) Insert the 2nd Gen 8 port PRI (PCIe) card in the corresponding PCIe slot of the Server.
2) Check if the installed PRI card is detected using the below command
# lspci
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If the card has been recognized, it will be displayed in the output information.
root voiptest ~]# lspci
#04:00.0 Non-VGA unclassified device: Device 1d21:1280(rev 01)
Device PRI Id
1280
Type of PRI Card
8 ports PRI Card
If the PRI card is not recognized by the system, you have to power off and take out the
card, and then insert it into another PCIe slot.
5. Software Installation Steps
This chapter describes how to install the software on your computer. Before you proceed
please make sure that your computer meets the requirements.
The following steps are applicable only for manual package installation its not applicable
for any pre-installed packages comes with Trixbox, Elastix, and FreePBX etc.
Test Environment (Example)
Libpri-1.4.14
ALLO Dahdi Driver - 2.9.1
Asterisk-11.4.0
centos 6.2 (kernel version: 2.6.32)
Telephony Card: 8 port PRI PCIe card (Model: 2aCP8e)
5.1 Installation of Pre requisite packages:
Install all of Asterisk’s dependencies that are required to compile asterisk. Run the followings
commands to install the required packages needed for compiling drivers from source.
[root@localhost ~]# yum install bison bison-devel ncurses ncurses-devel zlib zlib-devel openssl
openssl-devel gnutls-devel gcc gcc-c++ libxml2
5.1.1 Installation of LibPRI package
Go to /usr/src directory and Download LibPRI by running the following command
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[root@localhostsrc]# wget http://downloads.asterisk.org/pub/telephony/libpri/libpri1.4.14.tar.gz
After downloading LibPRI extract the LibPRI tar file by the command
[root@localhost src]# tar -xvzf libpri-1.4.14.tar.gz
Install the LibPRI by following the commands
[root@localhost src]# cd libpri-1.4.14
# make clean
# make
# make install
5.2 Installation of Dahdi Driver
Download latest ALLO Dahdi Drivers and available for download from:
http://www.allo.com/firmware/pri-card-second-gen/dahdi/dahdi-linux-complete2.9.1.1+2.9.1.tar.gz
You can download the respective dahdi driver from http://allo.com/pri-eight-port-card.html
under “Guides & Drivers”.
Download the respective dahdi driver executing the following command
#wget http://www.allo.com/firmware/pri-card-second-gen/dahdi/dahdi-linux-complete2.9.1.1+2.9.1.tar.gz
Extract the downloaded file and enter into that directory
# tar -xvzf dahdi-linux-complete-2.9.1.1+2.9.1.tar.gz
Use the following commands to install DAHDI drivers
# cd dahdi-linux-complete-2.9.1.1+2.9.1
# cd dahdi-linux-complete-2.9.1.1+2.9.1
#make
#make install
#make config
Successful dahdi driver installation shows the similar output & lists the detected dahdi devices
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Dahdi Driver Installation Output
After dahdi driver installation to list out the dahdi hardware devices run dahdi_hardware
command and output are as follows:
Dahdi-Hardware Command
5.3 Installation of Asterisk
Download the latest version of asterisk. Asterisk is available for download from:
http://downloads.asterisk.org/pub/telephony/asterisk/after downloading asterisk, extract the
asterisk tar file by giving following command.
#wget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-11-current.tar.gz
Go to asterisk folder and compile the packages as shown in the screenshot
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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
5.4 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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6. Software Configurations
Add the line “allo4xxp” at the end in /etc/Dahdi/modules file. The “start dahdi” is to “stop and
start dahdi service” according to deployment scenario.
After compiling and installing DAHDI and Asterisk, load the Dahdi driver by running:
# /etc/init.d/dahdi start
# dahdi_genconf –vvvvv
If there is any error, please trace the cause. Until all errors are clear up, you should execute
"dahdi_genconf" again, and then go to the next step.
By running "dahdi_genconf", it will generate /etc/dahdi/system.conf and etc/asterisk/dahdichannels.conf automatically. Check whether the generated files information agrees with your
hardware setup, if not, you should modify to your specific requirements.
Dahdi Channels Configure With asterisk
Do not forget to confirm dahdi-channels.conf is included in chan_dahdi.conf to configure
Dahdi channels with asterisk, if not, run command:
# echo "#include dahdi-channels.conf" >> /etc/asterisk/chan_dahdi.conf
Execute the following command:
# dahdi_cfg –vvvvv
This command is used for reading and loading parameters in the configuration file system.conf
and writing to the hardware.
Start the Asterisk by executing
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# asterisk –gvvvvvvvvvc
Make sure that PRI spans are up and active, before making calls. Here is the command to check
the PRI span status
CLI>pri show spans
PRI Span Status (8 Port PRI Card)
If you face any issues, please contact the reseller from whom you have purchased the ALLO
product or submit a support ticket http://support.allo.com/
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7. Appendix- PIN Assignments
All four ports on the 2aCP8e Series card bracket are 8-pin RJ45 ports. The pin assignments are
identified in the following table.
2aCP8e Series RJ45 Telco Port Connector
Dongle Split A RJ45 Telco Port Connector
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Dongle Split B RJ45 Telco Port Connector
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s
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Copy Right
Copyright © 2014 Allo. All rights reserved.
No part of this publication may be copied, distributed, transmitted, transcribed, stored in a
retrieval system, or translated into any human or computer language without the prior written
permission of Allo.com. This document has been prepared for use by professional and properly
trained personnel, and the customer assumes full responsibility when using it.
Proprietary Rights
The information in this document is Confidential to Allo and is legally privileged. The information
and this document are intended solely for the addressee. Use of this document by anyone else for
any other purpose is unauthorized. If you are not the intended recipient, any disclosure, copying
or distribution of this information is prohibited and unlawful.
Disclaimer
Information in this document is subject to change without notice and should not be construed as
a commitment on the part of allo.com. And does not assume any responsibility or make any
warranty against errors. It may appear in this document and disclaims any implied warranty of
merchantability or fitness for a particular purpose.
www.allo.com
Version 2.0
2
8 Port PRI Card- Quick Installation Guide
About this manual
This manual describes the Allo product application and explains how to work and use it major
features. It serves as a means to describe the user interface and how to use it to accomplish
common tasks. This manual also describes the underlying assumptions and users make the
underlying data model.
Document Conventions
In this manual, certain words are represented in different fonts, typefaces, sizes, and weights. This
highlighting is systematic; different words are represented in the same style to indicate their
inclusion in a specific category. Additionally, this document has different strategies to draw User
attention to certain pieces of information. In order of how critical the information is to your
system, these items are marked as a note, tip, important, caution, or warning.
Icon
Purpose
Note
Tip/Best Practice
Important
Caution
Warning
o Bold indicates the name of the menu items, options, dialog boxes, windows and functions.
o The color blue with underline is used to indicate cross-references and hyperlinks.
o Numbered Paragraphs - Numbered paragraphs are used to indicate tasks that need to be
carried out. Text in paragraphs without numbering represents ordinary information.
o The Courier font indicates a command sequence, file type, URL, Folder/File name
e.g. www.allo.com
Support Information
Every effort has been made to ensure the accuracy of the document. If you have comments,
questions, or ideas regarding the document contact online support: http://support.allo.com
www.allo.com
Version 2.0
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8 Port PRI Card- Quick Installation Guide
Table of Contents
About this manual .................................................................................................................... 3
Document Conventions ............................................................................................................ 3
Support Information................................................................................................................. 3
1. Introduction ............................................................................................................................. 5
2. Overview .................................................................................................................................. 5
2.1 Hardware Echo Cancellation .............................................................................................. 5
2.2 Identifying Ports ................................................................................................................. 6
2.3 Y-adopter Dongle ............................................................................................................... 7
2.4 Dongle Split End ................................................................................................................. 8
2.5 Slot Compatibility ............................................................................................................... 9
3. Software Configuration ............................................................................................................ 9
3.1 T1/E1 Selection................................................................................................................... 9
3.2 E1/T1 mode settings .......................................................................................................... 9
5.1 Installation of Pre requisite packages: ............................................................................. 11
5.1.1 Installation of LibPRI package .................................................................................... 11
5.2 Installation of Dahdi Driver .............................................................................................. 12
5.3 Installation of Asterisk ...................................................................................................... 13
5.4 Enable/Disable Hardware Echo Canceller ........................................................................ 14
6. Software Configurations ........................................................................................................ 15
7. Appendix- PIN Assignments ................................................................................................... 17
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1. Introduction
The Allo 2aCP8e/2aCP8eL series cards are T1/E1 PRI Cards designed for voice applications. The
Cards series are as follows.
Model No
Product Description
2aCP8e
8 Port PRI PCIe card
2aCP8eL
8 Port PRI PCIe card with Line Echo Cancellation
2. Overview
The Allo 2aCP8e (8 ports PRI Card) series supports industry standard protocols including
Channel Associated Signaling (CAS), SS7 Signaling, PRI switch Compatibility and Interoperable
with Asterisk, FreeSwitch, and Elastix etc.
The 2aCP8eL Series cards are ideal for connecting phones to a channel bank, T1/E1 switches,
or connecting to a legacy PBX. The Y-adapter dongle allows twice the amount of spans to fit
in a single PC slot and taking up less space to allow for more peripherals. Designed to be fully
compatible with existing software applications and integrate fully with Asterisk platform, the
2aCP8eL series cards allow many advanced call features. In this manual, we used 2aCP8eL PCI
Express card. These are identified collectively as the 2aCP8eL series cards throughout this
manual.
2.1 Hardware Echo Cancellation
Users connecting their 2aCP8eL series cards to the PSTN or other devices are likely to be
placing calls. Elimination of this echo is the responsibility of echo cancellation. Allo uses
Octassic DSP based hardware echo canceller with 128ms tail length.
The Allo 2aCP8e (8 ports PRI Card) series cards equipped with Asterisk is to perform softwarebased echo cancellation. Asterisk maintains a number of open source echo cancellers. These
open source echo cancellers provide a moderate level of echo cancellation, but not capable of
dealing with higher levels or more advanced echoes.
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Allo recommends that those users concerned about echo cancellation purchase the hardware
echo cancellation module. It is designed to handle up to 128ms of echo cancellation across all
channels and provides a G.168 compliant echo cancellation solution.
2.2 Identifying Ports
The 2aCP8eL series cards consists of 4 RJ45 Ports and eight status LEDs. The ports are used for
connecting T1, E1, or J1 cables via Y-adapter dongles.
The 2aCP8eL series cards can be used without Y-adaptor dongles, but only spans 1 through
4 will be accessible.
Ports
(1-4)
PCIe Connector
8 Port PRI PCIe card with LEC (2aCP8eL)
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Span
Status
LEDs
8 port PRI Card- Span Status LEDs
2.3 Y-adopter Dongle
The Y-adopter dongles are provided for accessing all 8 spans on the 2aCP8eL series cards. The
following figure helps to identify a dongle and its split end ports.
Y-Adapter Dongle
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2.4 Dongle Split End
Split A
Split B
Dongle Split End
Connection Diagram
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2.5 Slot Compatibility
Check your motherboard to verify that a compatible slot is available for a 2aCP8eL PRI card. To
determine which slots you have on your motherboard.
PCI Express 1-lane (x1) Slot
PCI Express 4-lane (x4) Slot
PCI Express 8-lane (x8) Slot
PCI Express 16-lane (x16) Slot
Motherboard slots
The 2aCP8e series cards work PCIe x1 slot including lane lengths x4, x8, x16
The 2aCP8eL PRI card will fit into above motherboard slots (PCI Express), but cannot fit into
any of the other slots.
3. Software Configuration
3.1 T1/E1 Selection
The 2aCP8eL series cards can be configured for either T1 or E1 mode. The T1/E1 mode may be
specified in the drivers using either the default_linemode= t1 or default_linemode=e1 module
parameter when the drivers are loaded. This will set the mode for all spans on the card.
3.2 E1/T1 mode settings
By default the card is ready to use in E1 mode
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E1 Mode
Add “allo4xxp” at the end of /etc/dahdi/modules, so that while starting dahdi driver Allo card
modules will load automatically.
T1 Mode
To configure the PRI card in T1 signaling mode, please add the following line in the relevant files,
(i) Add “allo4xxp” at the end of /etc/dahdi/modules, so that while starting dahdi driver Allo
card modules will load automatically
(ii) Add “options allo4xxp default_linemode=t1 # for T1 Signaling” at the end of
/etc/modprobe.d/dahdi.conf
4. Hardware Setup
2nd Generation 8 port PRI Card with Dongle Splits
1) Insert the 2nd Gen 8 port PRI (PCIe) card in the corresponding PCIe slot of the Server.
2) Check if the installed PRI card is detected using the below command
# lspci
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If the card has been recognized, it will be displayed in the output information.
root voiptest ~]# lspci
#04:00.0 Non-VGA unclassified device: Device 1d21:1280(rev 01)
Device PRI Id
1280
Type of PRI Card
8 ports PRI Card
If the PRI card is not recognized by the system, you have to power off and take out the
card, and then insert it into another PCIe slot.
5. Software Installation Steps
This chapter describes how to install the software on your computer. Before you proceed
please make sure that your computer meets the requirements.
The following steps are applicable only for manual package installation its not applicable
for any pre-installed packages comes with Trixbox, Elastix, and FreePBX etc.
Test Environment (Example)
Libpri-1.4.14
ALLO Dahdi Driver - 2.9.1
Asterisk-11.4.0
centos 6.2 (kernel version: 2.6.32)
Telephony Card: 8 port PRI PCIe card (Model: 2aCP8e)
5.1 Installation of Pre requisite packages:
Install all of Asterisk’s dependencies that are required to compile asterisk. Run the followings
commands to install the required packages needed for compiling drivers from source.
[root@localhost ~]# yum install bison bison-devel ncurses ncurses-devel zlib zlib-devel openssl
openssl-devel gnutls-devel gcc gcc-c++ libxml2
5.1.1 Installation of LibPRI package
Go to /usr/src directory and Download LibPRI by running the following command
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[root@localhostsrc]# wget http://downloads.asterisk.org/pub/telephony/libpri/libpri1.4.14.tar.gz
After downloading LibPRI extract the LibPRI tar file by the command
[root@localhost src]# tar -xvzf libpri-1.4.14.tar.gz
Install the LibPRI by following the commands
[root@localhost src]# cd libpri-1.4.14
# make clean
# make
# make install
5.2 Installation of Dahdi Driver
Download latest ALLO Dahdi Drivers and available for download from:
http://www.allo.com/firmware/pri-card-second-gen/dahdi/dahdi-linux-complete2.9.1.1+2.9.1.tar.gz
You can download the respective dahdi driver from http://allo.com/pri-eight-port-card.html
under “Guides & Drivers”.
Download the respective dahdi driver executing the following command
#wget http://www.allo.com/firmware/pri-card-second-gen/dahdi/dahdi-linux-complete2.9.1.1+2.9.1.tar.gz
Extract the downloaded file and enter into that directory
# tar -xvzf dahdi-linux-complete-2.9.1.1+2.9.1.tar.gz
Use the following commands to install DAHDI drivers
# cd dahdi-linux-complete-2.9.1.1+2.9.1
# cd dahdi-linux-complete-2.9.1.1+2.9.1
#make
#make install
#make config
Successful dahdi driver installation shows the similar output & lists the detected dahdi devices
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Dahdi Driver Installation Output
After dahdi driver installation to list out the dahdi hardware devices run dahdi_hardware
command and output are as follows:
Dahdi-Hardware Command
5.3 Installation of Asterisk
Download the latest version of asterisk. Asterisk is available for download from:
http://downloads.asterisk.org/pub/telephony/asterisk/after downloading asterisk, extract the
asterisk tar file by giving following command.
#wget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-11-current.tar.gz
Go to asterisk folder and compile the packages as shown in the screenshot
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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
5.4 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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6. Software Configurations
Add the line “allo4xxp” at the end in /etc/Dahdi/modules file. The “start dahdi” is to “stop and
start dahdi service” according to deployment scenario.
After compiling and installing DAHDI and Asterisk, load the Dahdi driver by running:
# /etc/init.d/dahdi start
# dahdi_genconf –vvvvv
If there is any error, please trace the cause. Until all errors are clear up, you should execute
"dahdi_genconf" again, and then go to the next step.
By running "dahdi_genconf", it will generate /etc/dahdi/system.conf and etc/asterisk/dahdichannels.conf automatically. Check whether the generated files information agrees with your
hardware setup, if not, you should modify to your specific requirements.
Dahdi Channels Configure With asterisk
Do not forget to confirm dahdi-channels.conf is included in chan_dahdi.conf to configure
Dahdi channels with asterisk, if not, run command:
# echo "#include dahdi-channels.conf" >> /etc/asterisk/chan_dahdi.conf
Execute the following command:
# dahdi_cfg –vvvvv
This command is used for reading and loading parameters in the configuration file system.conf
and writing to the hardware.
Start the Asterisk by executing
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# asterisk –gvvvvvvvvvc
Make sure that PRI spans are up and active, before making calls. Here is the command to check
the PRI span status
CLI>pri show spans
PRI Span Status (8 Port PRI Card)
If you face any issues, please contact the reseller from whom you have purchased the ALLO
product or submit a support ticket http://support.allo.com/
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7. Appendix- PIN Assignments
All four ports on the 2aCP8e Series card bracket are 8-pin RJ45 ports. The pin assignments are
identified in the following table.
2aCP8e Series RJ45 Telco Port Connector
Dongle Split A RJ45 Telco Port Connector
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Dongle Split B RJ45 Telco Port Connector
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s
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