Cisco 4-port FXO analog voice/fax expansion module Specification Guide
Understanding High-Density
Analog Voice/Fax Network
Modules (NM-HDA)
Analog Voice/Fax Network
Modules (NM-HDA)
Document ID: 20365
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
Product Numbers
Features
Configuration
Platform Support
NetPro Discussion Forums - Featured Conversations
Related Information
Introduction
The analog voice/fax network modules provide standard analog
interface to the telephony equipment and Public Switched Telephone Network (PSTN). The high-
density analog voice/fax network modules (NM-HDA) serve up to 16 analog ports, or four times the
number of ports that the low-density analog voice/fax network modules (NM-2V) support. The ports
can be in these combinations:
interface to the telephony equipment and Public Switched Telephone Network (PSTN). The high-
density analog voice/fax network modules (NM-HDA) serve up to 16 analog ports, or four times the
number of ports that the low-density analog voice/fax network modules (NM-2V) support. The ports
can be in these combinations:
4 Foreign Exchange Station (FXS) ports
12 FXS ports
4 FXS and 4 Foreign Exchange Office (FXO) ports
4 FXS and 8 FXO ports
12 FXS and 4 FXO ports
The base card supports four FXS ports.
The addition of an 8-port FXS expansion module (EM) can increase the capacity to 12 FXS
ports.
ports.
TAC Notice: What's
Changing on TAC Web
Changing on TAC Web
Help us help you.
!
"
#
$
Excellent
!
"
#
$
Good
!
"
#
$
Average
!
"
#
$
Fair
!
"
#
$
Poor
%&
'
(
)
+*-,
.
!
"
#
$
Yes
!
"
#
$
No
!
"
#
$
Just browsing
/
00
1
2
43
5,
)
76
(256 character limit)
8:9<;=
Page 1 of 6
Cisco - Understanding High-Density Analog Voice/Fax Network Modules (NM-HDA)
8/16/2004
http://www.cisco.com/warp/customer/788/products/nmhda_voice.html