Cisco 4-port FXO analog voice/fax expansion module EM-HDA-4FXO= Datenbogen
Produktcode
EM-HDA-4FXO=
Data Sheet
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The Cisco High-Density Extension Module includes the following components:
●
An 8-port extension module (part number EVM-HD-8FXS/DID)-Baseboard with 8 ports that
can be configured individually for FXS or DID signaling
●
Voice and fax expansion modules:
◦
A 4-port expansion module supporting BRI (NT and TE) (part number EM-4BRI-NT/TE)
◦
An 8-port expansion module supporting FXS (part number EM-HDA-8FXS)
◦
A 6-port expansion module supporting FXO (part number EM-HDA-6FXO)
◦
A 7-port expansion module with 3 FXS and 4 FXO ports (part number EM-HDA-
3FXS/4FXO)
Adding expansion modules to the Cisco High-Density Extension Module baseboard increases
voice and fax session capacity. The modular design of the Cisco High-Density Extension Module
provides maximum flexibility-plug in up to two expansion modules in any combination to build the
Cisco High-Density Extension Module best suited for specific packet telephony network locations.
The Cisco High-Density Extension Module provides gateway services for Cisco AVVID
(Architecture for Voice, Video and Integrated Data) using Cisco CallManager with Survivable
Remote Site Telephony (SRST) or Cisco CallManager Express (CME). Gateway services allow
users to deploy networks that take advantage of investments in existing legacy telephony
equipment while also deploying and integrating IP telephony. The network can operate at any point
on the voice, video and integrated data spectrum-with the ability to add connections for both
traditional telephony devices and IP telephony endpoints.
Cisco 2821 and Cisco 2851 Extension Voice Module Slot
The Cisco High-Density Extension Module operates in the Extension Voice Module (EVM) slot on
the Cisco 2821 and Cisco 2851 integrated services routers. The EVM slot supports additional
voice services and density without consuming the network module slot on the Cisco 2821 or Cisco
2851.
Cisco 3825 and Cisco 3845 Network Module Slot
The High-Density Extension Module operates in any network module or enhanced network module
(NME) slot on the Cisco 3825 and Cisco 3845 integrated services routers. The Cisco 3825
supports one Cisco High-Density Extension Module, and the Cisco 3845 supports one or two high-
density extension modules.
High-Density Extension Module Digital Signal Processor (DSP) Resources
Packet voice DSP modules (PVDM2s) are used in combination with the Cisco High-Density
Extension Module baseboard and its expansion modules. PVDM2s support multiple voice codecs,
fax, conferencing, and transcoding services. PVDM2s are purchased separately and installed in
the digital signal processor (DSP) module slots located inside the Cisco 2821, Cisco 2851, Cisco
3825, and Cisco 3845 integrated services routers. Initial orders for a Cisco 2821, Cisco 2851,
Cisco 3825, or Cisco 3845 router that include a Cisco High-Density Extension Module should also
include an appropriate number of PVDM2s.