Datasheet
Data Sheet
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Feature Benefit
Silence Suppression
and Voice Activity
Detection
Bandwidth is used only when someone is speaking. During silent periods of a phone call
(approximately 50 percent of the time), bandwidth is available for other traffic.
Comfort Noise
Generation
To better simulate phone calls over voice networks, this feature reassures the phone user
that the connection is being maintained, even when no voice packets are being transmitted.
Dial-Plan Mapping Automatic mapping of dialed VoIP phone numbers to IP addresses simplifies configuration
and management.
Dual Tone
Multifrequency (DTMF)
Tone Processing
This feature helps enable access to voice mail and interactive-voice-response (IVR)
systems.
Fax and Modem Pass-
Through
This feature allows fax and modem traffic to pass through a voice port.
Fax Relay Fax relay provides a more robust protocol for fax transmission over packet networks. It
includes support for T.38 and T.37 fax protocols.
Country-Specific
Signaling
This feature transparently delivers customary phone signals to users, facilitating acceptance
of new technology.
Autocalling and
Private-Line Automatic
Ring-Down (PLAR)
With this feature, a destination phone can be configured to automatically ring when the caller
lifts the handset.
Hunt groups Calls can be forwarded automatically to the first available line.
Battery Polarity
Reversal Detection and
Initiation
Detection of disconnect supervision and far-end answer supervision through battery polarity
reversal provides a robust method of providing supervisory disconnect, especially for loop-
start signaling on FXS and FXO interfaces.
Supervisory
Disconnect
Signaling protocols such as loop start do not provide means for quickly detecting when the
call initiation is terminated prior to call connection. Supervisory disconnect quickly makes this
determination and frees valuable resources for other calls.
Product Specifications
Table 5 gives specifications of the 8-port FXS and DID High-Density Extension Module baseboard.
Table 5. Specifications of 8-Port FXS and DID Voice and Fax Extension Module Baseboard
Product Specifications
Part number EVM-HD-8FXS/DID
Software Compatibility Cisco IOS Software Release 12.3(8)T4 or later
Memory Requirements Refer to the Cisco IOS Software release notes to determine minimum Flash and system
memory requirements.
EMC Compliance FCC Class A device, CE Class A
Safety Conformance UL 60950, EN 60950, AS/NZS60950, IEC 60950
Network Equipment
Building System
(NEBS) Compliance
●
Designed for NEBS Level 3: GR-63 and GR-1089, Type 1/3.
●
Formal NEBS certification testing in progress; compliance results will be published upon
completion
Physical Connector One RJ-21 connector
RJ-21 Distribution
Panel
●
MENTION OF NON-CISCO PRODUCTS OR SERVICES IS FOR INFORMATION
PURPOSES ONLY AND CONSTITUTES NEITHER AN ENDORSEMENT NOR A
RECOMMENDATION.
●
Distribution panels are generally available from multiple cable and network adaptor
vendors. Customers may, at their sole discretion, consider using a patch panel from
Black Box Corporation. The Black Box patch panel accommodates RJ-11 and RJ-45
combinations and offers flexibility for expansion module upgrades (analog or digital). The
Black Box patch panel is available direct from the manufacturer or from several national
resellers and distributors.
●
Black Box Corporation: http://blackbox.com/
●
Technical support and ordering: 724 746-5500
●
Black Box part number: JPM2194A
●
Description: Distribution Panel for Cisco High Density Analog and Digital Extension
Module for Voice and Fax (EVM-HD)
Spare The spare part number is EVM-HD-8FXS/DID=.