Cisco 4-port FXO analog voice/fax expansion module EM-HDA-4FXO= Hoja De Datos
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EM-HDA-4FXO=
Data Sheet
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Applications
Table 1 lists the Cisco High-Density Extension Module and expansion modules available and the
applications each supports.
Table 1.
Cisco High-Density Extension Module Baseboard and Expansion Modules
Product Number
Description
EVM-HD-8FXS/DID
The Cisco High-Density Extension Module for voice and fax has 8 FXS and DID ports. Individual
ports on the baseboard module can be configured for FXS or DID signaling. Adjacent ports
should share the same configuration to avoid impedance setting conflicts. A change to the
impedance setting for one port, changes the setting on the adjacent port. Paired ports are: 0
and 1; 2 and 3; 4 and 5; 6 and 7.
ports on the baseboard module can be configured for FXS or DID signaling. Adjacent ports
should share the same configuration to avoid impedance setting conflicts. A change to the
impedance setting for one port, changes the setting on the adjacent port. Paired ports are: 0
and 1; 2 and 3; 4 and 5; 6 and 7.
An on-premises FXS interface connects directly to a standard telephone, fax machine, or similar
device and supplies ring, voltage, and dial tone. Signaling support available in FXS mode
includes loop-start and ground-start. DID trunks from the central office can be connected to the
Cisco High-Density Extension Module baseboard for off-premises connections. Signaling
support available in DID mode includes immediate, delay dial, and wink start.
device and supplies ring, voltage, and dial tone. Signaling support available in FXS mode
includes loop-start and ground-start. DID trunks from the central office can be connected to the
Cisco High-Density Extension Module baseboard for off-premises connections. Signaling
support available in DID mode includes immediate, delay dial, and wink start.
Users plug in up to two expansion modules in any combination to increase the voice and fax
capacity of the Cisco High-Density Extension Module baseboard.
capacity of the Cisco High-Density Extension Module baseboard.
EM-4BRI-NT/TE
This 4-port BRI voice and fax expansion module has ports are that are configurable for NT or
TE mode. This module allows connection to an ISDN S/T network by replicating either the
network side or the terminal side. In NT mode the ports replicate the PSTN interface to a PBX
that is compatible with European Telecommunications Standards Institute (ETSI) NET3 and
QSIG switch types. In TE mode the ports support the same ISDN protocols as other Cisco
Systems
TE mode. This module allows connection to an ISDN S/T network by replicating either the
network side or the terminal side. In NT mode the ports replicate the PSTN interface to a PBX
that is compatible with European Telecommunications Standards Institute (ETSI) NET3 and
QSIG switch types. In TE mode the ports support the same ISDN protocols as other Cisco
Systems
®
products to allow connection to ISDN S/T networks, or through an external NT1 to
ISDN U-interfaces. This module provides four on-premises S/T BRI trunk connections to the
ISDN PBX.
ISDN PBX.
EM-HDA-8FXS
This 8-port FXS voice and fax expansion module provides on-premises FXS signaling to
connect directly to a standard telephone, fax machine, or similar device and supplies ring,
voltage, and dial tone. Signaling support available in FXS mode includes loop-start and ground-
start. Only FXS signaling is supported-there is no DID support. This expansion module also
works with the Cisco High-Density Analog Voice and Fax Network Module (part number NM-
HDA-4FXS).
connect directly to a standard telephone, fax machine, or similar device and supplies ring,
voltage, and dial tone. Signaling support available in FXS mode includes loop-start and ground-
start. Only FXS signaling is supported-there is no DID support. This expansion module also
works with the Cisco High-Density Analog Voice and Fax Network Module (part number NM-
HDA-4FXS).
EM-HDA-6FXO
This 6-port FXO voice and fax expansion module provides off-premises connection to the
central office. This 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". It also supports
analog Centralized Automated Message Accounting (CAMA) on any port. telephone to provide
a direct line to the PSTN.
central office. This 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". It also supports
analog Centralized Automated Message Accounting (CAMA) on any port. telephone to provide
a direct line to the PSTN.
EM-HDA-3FXS/4FXO
This 3-port FXS and 4-port FXO voice and fax expansion module provides on-premises FXS
signaling to connect directly to a standard telephone, fax machine, or similar device and
supplies ring, voltage, and dial tone. In addition, the FXO ports provide off-premises connection
to the central office. FXS signaling support available includes loop-start and ground-start. There
is no DID support. In addition, there is no FXO power failover support on the FXO ports. It also
supports analog Centralized Automated Message Accounting (CAMA) on any port.
signaling to connect directly to a standard telephone, fax machine, or similar device and
supplies ring, voltage, and dial tone. In addition, the FXO ports provide off-premises connection
to the central office. FXS signaling support available includes loop-start and ground-start. There
is no DID support. In addition, there is no FXO power failover support on the FXO ports. It also
supports analog Centralized Automated Message Accounting (CAMA) on any port.
Table 2 gives the DSP resources for the Cisco High-Density Analog and Digital Extension Module
for Voice and Fax.
Table 2.
DSP Resources for the Cisco High-Density Extension Module
Module
Description
PVDM2-8
PVDM2-16
PVDM2-32
PVDM2-48
PVDM2-64
PVDM2 modules provide central Digital Signal Processor (DSP) resources for the Cisco High-
Density Extension Module (EVM-HD) baseboard and its expansion modules. PVDM2 modules
are purchased separately and installed in the DSP module slots located inside the Cisco 2821,
Cisco 2851, Cisco 3825, and Cisco 3845 integrated services routers.
Density Extension Module (EVM-HD) baseboard and its expansion modules. PVDM2 modules
are purchased separately and installed in the DSP module slots located inside the Cisco 2821,
Cisco 2851, Cisco 3825, and Cisco 3845 integrated services routers.
Refer to the PVDM2 DSP data sheet for more information: High-Density Packet Voice Digital
Signal Processor Module for Cisco IP Communications Solution. It can be found at:
http://www.cisco.com/en/US/products/hw/modules/ps3115/products_data_sheet0900aecd8016e84
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