COVID-19 NOTICE: We are here. We are open. As an 'Essential Business', we are supporting customers all over the world during this unprecedented health crisis. Read more »


Lifetime Warranty
Manufacturer: Cisco
Product ID: EM-HDA-4FXO
Product Description: 4-port voice/fax expansion module - FXO
Shipping: Typically ships within 2-3 days
Warranty: Lifetime Warranty
Any Questions?
1-800-TO-MULTI or Email

Pre-Owned, Used And Refurbished Cisco EM-HDA-4FXO

The Cisco EM-HDA-4FXO is a four-port Foreign Exchange Office expansion module manufactured by Cisco Systems to provide standard analog interface to the telephony equipment and Public Switched Telephone Network (PSTN). The high-density analog voice/fax network modules (NM-HDA) serve up to 16 analog ports, or four times the number of ports that the low-density analog voice/fax network modules (NM-2V) support. To include the EM-HDA-4FXO, it can be used in one of the following combinations: 12 FXS and 4 FXO ports; 4 FXS and 8 FXO ports, or 4 FXS and 4 FXO ports. The addition of two 4-port FXO EMs can increase the capacity to 8 FXO ports along with 4 FXS ports.

Our extensive EM-HDA-4FXO inventory provides for quick order turn-around, often allowing us to ship "same day" or within just 1-2 business days. What's more? As an independent supplier, we are able to offer more equipment options than are available through distribution, including new, used and refurbished EM-HDA-4FXO. In some instances, our pre-owned equipment may still be in new condition, still sealed in original factory packaging (but at a fraction of the cost).

MLCP is committed to quality, and we guaranty any refurbished Cisco EM-HDA-4FXO purchase with our standard lifetime warranty. All used EM-HDA-4FXO equipment is tested to factory specifications and packaged professionally for safe transport. As an experienced supplier of pre-owned network hardware, we understand that we have to be better than the manufacturer, and that fundamental principle guides us every day.

Is your interest in the EM-HDA-4FXO as a result of an upgrade? We may be interested in your surplus networking equipment and encourage you to take advantage of our flexible "buy-back" options, including an up-front purchase option and generous trade-ins for credit.

For a quote today, simply click onto the "Request a Quote" button on the right, or call 1-800-TO MULTI (866-8584) for assistance. Thank you!

You might also be interested in PWR-2801-AC-IP.

General Information
Manufacturer: Cisco
Product ID: EM-HDA-4FXO
Product Description: 4-port voice/fax expansion module - FXO
Product Type: Expansion Module
Marketing Information
Cisco 2600 and 3600 high-density analog voice/fax network modules provide enterprises, managed service providers and service providers the ability to directly connect the PSTN and legacy telephony equipment to existing Cisco 2600 and Cisco 3600 routers. This provides immediate multiservice advantages, such as telephony toll bypass, new packet telephony applications, and full gateway integration within a Cisco AVVID (Architecture for Voice Video and Integrated Data) IP telephony architecture.
Technical Information
Application/Usage: Data Networking
Interfaces/Ports Details: 4 x RJ-21 Port FXO WAN
Physical Characteristics
Shipping Weight (Approximate): 1.29 lb
Additional Information:
  • Use to provide off-premise analog connections to the central office in the U.S., Canada, and other countries (configurable). Includes support for battery polarity reversal detection and Caller ID.
  • Interface Type: Foreign exchange office
  • Cisco IOS Software Requirement: 12.2(2)XT / 12.2.(8)T or later for Cisco 2600/3600
  • Signaling Formats: Loop-start, ground-start
  • Address Signaling Formats:
    - In-band DTMF
    - Out-of-band pulse (10/20 pps)
  • Tone Disconnect Supervision: Call disconnect on progress tone of less than 600 Hz
  • Battery Polarity Reversal Detection: Detection of disconnect supervision and far-end answer supervision via battery polarity reversal
  • Power Interrupt Disconnect: Call disconnect on power interrupt of more than 600 msec
  • Power Failover port: During power failure, one FXO port "fails over" (gets connected) to a standby port with an analog phone
  • MTBF: 1,150,000 hours

    Feature :
  • Voice/Fax over IP
  • Voice/Fax over Frame Relay
  • Voice over ATM
  • Connection Trunk
  • LVBO (Local Voice Busy-Out)
  • Caller ID Support
  • Call Admission Control using RTR
  • Robust Router-Based Solution
  • Modular Architecture
  • Voice and Fax over Same Port
  • Works with Existing Phones, Faxes, PBXs, and Key Systems
  • H.323 v2/v3 Compatibility
  • High-Performance DSP Architecture
  • ITU Standard codecs such as G.729, G.729a/b, and G.711
  • Advanced Quality of Service (QoS) Mechanisms
  • Compressed Real-Time Protocol and Multilink Point-to-Point Protocol Fragmentation and Interleaving
  • Silence Suppression/Voice Activity Detection
  • Comfort Noise Generation
  • Dial Plan Mapping
  • Dual Tone Multifrequency (DTMF) Tone Processing
  • T.30 Protocol Recognition
  • Country-Specific Signaling
  • Autocalling
  • Hunt Groups
  • Battery Polarity Reversal Detection and Initiation
  • Supervisory Disconnect
  • FXO power failover

    List of standard codecs supported:
  • High Complexity:
    - G.711 a-law and u-law
    - G.726 @ 32k, 24k, and 16k
    - G.728
    - G.729, A, B and AB
    - G.723.1 @5.3k and 6.3k
    - clear channel codec, and fax relay

    -Medium Complexity:
    - G.711 a-law and u-law
    - G.726 @ 32k, 24k, and 16k
    - G.729A and AB
    - clear channel codec, and fax relay

    -Low Complexity:
    - G.711 a-law and u-law

  • USA
  • Canada
  • CE countries:
    - European Community countries:
    - Austria
    - Belgium
    - Denmark
    - Finland
    - France
    - Germany
    - Greece
    - Ireland
    - Italy
    - Luxemburg
    - Netherlands
    - Portugal
    - Spain
    - Sweden
    - United Kingdom
  • Cisco 2600 Series
  • Cisco 3600 Series
  • Cisco 3700 Series Products

You might also be interested in:



2-port HWIC w/ 1-port ADSLoISDN and 1-port ISDN BRI-S/T
Learn More


Cisco IAD887 ADSL2+ AnxA FXS Sec ISDN B/U 802.11n ETSI Comp
Learn More


2800 W AC Power Supply
Learn More

Newsletter Subscribe

Close X

Sign up for news and special offers