Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 209

Connecting High-Density Analog Telephony
Network Modules
This chapter describes how to connect high-density analog telephony network modules for Cisco
modular routers. It contains the following sections:
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To determine whether your router supports a specific network module, see
Tip
High-Density Analog Telephony Network Module
The high-density analog telephony network module is a modular, high-density voice network module
that provides dual tone multifrequency (DTMF) detection, voice compression and decompression, call
progress tone generation, voice activity detection (VAD), echo cancellation, and adaptive jitter
buffering.
The high-density analog telephony network module supports two different expansion modules,
providing up to 12 ports in addition to the 4 Foreign Exchange Service (FXS) ports on the base
high-density analog telephony network module (NM-HDA). See
support information.
Table 16-1 Expansion Modules Supported on the Cisco High-Density Analog Telephony Network
Expansion Modules
EM-HDA-8FXS
EM3-HDA-8FXS
EM-HDA-4FXO
EM2-HDA-4FXO
OL-2485-20
High-Density Analog Telephony Network Module, page 16-1
Connecting the High-Density Analog Telephony Network Module to the Network, page 16-3
Adding DSP Expansion Modules, page 16-3
Adding Port Expansion Modules, page 16-4
High-Density Analog Telephony Network Module LEDs, page 16-6
High-Density Analog Voice Card Pinouts, page 16-6
Module (NM-HDA)
Port Type
FXS
FXS
FXO
1
FXO
C H A P T E R
Number of Ports
8
8
4
4
Cisco Network Modules Hardware Installation Guide
16
Table 1-6 on page
Table 16-1 for expansion module
1-16.
16-1