Cisco 850 Series Manual page 87

Cisco Voice Network Modules
Analog and ISDN Basic Rate Voice Network Modules
Product Description
EM-HDA-6FXO Provides off-premises
connection to the central
Six-port FXO Voice and Fax
office . This module
Expansion Module
supports FXO power
failover . If power to the
router fails, this feature
helps enable a direct
metallic path between an
FXO port and a special
"red" telephone to provide
a direct line to the PSTN .
Use with the Cisco
High-Density Extension
Module (EVM-HD-8FXS/
DID) baseboard .
Modular Router Solutions
Voice and Fax Integration
EM-HDA-3FXS/4FXO
Provides on-premises
FXS signaling to connect
Three-port FXS and
directly to a standard
Four-port FXO Voice and
telephone, fax machine, or
Fax Expansion Modules
similar device and supplies
ring, voltage, and dial tone .
In addition, the FXO ports
provide off-premises
connection to the central
office . Use with the Cisco
High-Density Extension
Module (EVM-HD-8FXS/
DID) baseboard .
Modular Router Solutions
Voice and Fax Integration
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continued
Supported Platforms
and Minimum Cisco
IOS Versions Comments
3800 Series–12 .3(11)T Requires a Cisco
high-density analog and
2851–12 .3(8)T4
digital extension module
2821–12 .3(8)T4
(EVM-HD-8FXS/DID) .
Requires voice feature set .
3800 Series–12 .3(11)T Requires a Cisco
high-density analog and
2851–12 .3(8)T4
digital extension module
2821–12 .3(8)T4
(EVM-HD-8FXS/DID) .
Requires voice feature set .
T1/E1 Digital Voice Network Modules
Product Description
EM-HDA-4FXO
Provides four off-premise
analog connections to
Four-port Voice/Fax
the central office . Country
Expansion Module – FXO
settings are configurable .
Includes support for
battery polarity reversal
detection and Caller ID .
Modular Router Solutions
Voice and Fax Integration
EM2-HDA-4FXO Provides four off-premise
analog connections to
Four-port Voice/Fax
the central office . Country
Expansion Module – FXO
settings are configurable .
Includes support for
battery polarity reversal
detection and Caller
ID . Compared to the
EM-HDA-4FXO, this module
delivers longer loop length
support and improved
performance against poor
line conditions when used
in GroundStart signaling
mode .
Modular Router Solutions
Voice and Fax Integration
EM-HDA-8FXS Provides an additional eight
FXS ports for connections
Eight-port Voice/Fax
directly to analog phones,
Expansion Module – FXS
fax machines, and key .
Modular Router Solutions
Voice and Fax Integration
DSP-HDA-16 Enables an additional eight
high-complexity or 16
16-channel DSP Module for
medium-complexity voice
NM-HDA
calls on NM-HDA .
Modular Router Solutions
Voice and Fax Integration
Cisco Voice Network Modules
Supported Platforms
and Minimum Cisco
IOS Versions Comments
3800 Series–12 .3(11)T Requires Cisco IP voice
feature set and higher .
2811, 2821, and
2851–12 .3(8)T4 Requires a high-density
analog voice/fax network
module (NM-HDA-4FXS) .
3800 Series–12 .3(14)T Requires Cisco IP voice
feature set and higher .
2811, 2821, and
2851–12 .3(14)T Requires a high-density
analog voice/fax network
module (NM-HDA-4FXS) .
3800 Series–12 .3(11)T 12 .3 Mainline and forward
supported in IP Voice
2811, 2821, and
feature set .
2851–12 .3(8)T4
Requires a high-density
analog voice/fax network
module (NM-HDA-4FXS)
or a Cisco high-density
analog and digital
extension module
(EVM-HD-8FXS/DID) .
3800 Series–12 .3(11)T 12 .3 Mainline and forward
supported in IP Voice
2811, 2821, and
feature set .
2851–12 .3(8)T4
Requires a high-density
analog voice/fax network
module (NM-HDA-4FXS) .
169