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High density voice/fax extension module - 8 FXS/DID

CISCO High density voice/fax extension module - 8 FXS/DID (EVM-HD-8FXS/DID= )

Artikelnr: EVM-HD-8FXS/DID=

High density voice/fax extension module-8 FXS/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.

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.

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.




Part number EVM-HD-8FXS/DID

Software Compatibility

Cisco IOS Software Release 12.3(8)T4 or later

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

• 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
• 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)


The spare part number is EVM-HD-8FXS/DID=.

Expansion Modules

The Cisco High-Density Extension Module baseboard supports 0, 1 or 2 expansion modules in any combination

DSP Resources

PVDM2s provide central DSP resources for the Cisco High-Density Extension Module baseboard and its expansion modules. PVDM2s 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.

DID Signaling Modes

Immediate, delay-dial, and wink start

DID Loop Resistance

Up to 1800 ohms (including the terminal equipment)

Disconnect Supervision

Power denial (calling-party control, far-end disconnect)

Caller ID

On-hook transmission of frequency-shift-keying data

FXS Loop Resistance

Up to 600 ohms (including the phone or terminal equipment)

On-Hook Voltage


Ringing Tone

The ringing tone is configurable for different country requirements

Ringing Voltage

40 Vrms at 5 REN at 25 Hz (configurable frequency)

Ringing Frequencies

25Hz and 50Hz

Address Signaling Formats

In-band DTMF

Out-of-band pulse (10 pps)

FXS Signaling Formats

Loop-start and ground-start

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