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EM-HDA-3FXS/4FXO
7-port voice/fax expansion module - 3FXS/4FXO Cisco Router N...
Federal agencies and Fortune 500 operations source through ORM Systems.
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Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
EM-HDA-3FXS/4FXO is a high-performance telephony interface module that integrates both FXS and FXO ports for seamless analog voice connectivity. This module provides three FXS ports for directly connecting analog telephones and four FXO ports for interfacing with external telephone lines, making it ideal for enterprises looking to consolidate their voice and data infrastructures in one solution.
Designed for compatibility with unified communications platforms and VoIP gateways, the EM-HDA-3FXS/4FXO features RJ11 connectors and a modular form factor that allows for flexible installation in a variety of network environments. Offering essential features such as echo cancellation and caller ID delivery, this analog interface module is engineered to support mission-critical voice applications while meeting stringent operating and storage temperature requirements.
EM-HDA-3FXS/4FXO price is $627.00, a 61.9% saving from the Cisco list price of $1,645.00. EM-HDA-3FXS/4FXO is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for EM-HDA-3FXS/4FXO for additional pricing. Browse the full Nm Nme Em Network Modules series or explore all Cisco products.
A retail chain deploys the EM-HDA-3FXS/4FXO-7-port voice/fax expansion module on Cisco ISR routers at remote outlets to connect existing analog phones and fax machines directly to the VoIP network. This delivers seamless voice and fax services over WAN, reduces PSTN line costs by 30%, and ensures local survivability during central site outages.
A multi-site healthcare provider installs the 3FXS/4FXO expansion module in Cisco routers to aggregate analog fax traffic from clinics into a centralized, HIPAA-compliant fax server. This streamlines document workflows, enhances data security, and cuts per-page faxing expenses by 40% while maintaining regulatory compliance.
A financial services firm integrates the EM-HDA-3FXS/4FXO module into its Cisco router to provide automatic PSTN fallback for critical voice lines during IP network failures. This solution guarantees 99.9% uptime for trader communications, minimizes revenue impact from service disruptions, and supports rapid failover without additional hardware.
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| EM-HDA-3FXS/4FXO |  NM-HDV2-1T1/E1 |  NME-NAC-K9 |  EM-HDA-8FXS |  EM-HDA-6FXO | |
|---|---|---|---|---|---|
| Product Type | Telephony Interface Module | Network Module | Network Module / Network Card | Telephony Interface Module | Telephony Interface Module |
| Module Type | Analog FXS/FXO Module | WAN | Ethernet | FXS | FXO |
| Connector Type | RJ11 | RJ-48 | SFP+ | RJ-11 | FXO |
| Form Factor | Modular | Modular | PCIe | Modular | Modular |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 48V DC | 3.3V | 3.3V | 5V | 5V |
| Product Name | EM-HDA-3FXS/4FXO | NM-HDV2-1T1/E1 | NME-NAC-K9 Network Access Card | EM-HDA-8FXS | EM-HDA-6FXO |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Versatile voice module handling mixed FXS and FXO needs.
Good call quality across all ports.
Stable and reliable for daily use.
Easy integration with existing router.
Satisfied with performance.
The EM-HDA-3FXS/4FXO is a 7-port voice/fax expansion module for Cisco routers, offering 3 FXS and 4 FXO ports for analog PBX, PSTN and fax integration.
This module is supported on Cisco ISR G2 and G3 platforms, including the 2800, 2900, 3800 and 3900 series routers with a high-density voice slot.
FXS ports deliver dial tone to analog devices (phones/faxes), while FXO ports connect the router to a PSTN line or analog PBX trunk.
This module can handle up to 7 simultaneous analog voice or fax calls, limited by router DSP resources and IOS configuration.
Yes. The module supports fax pass-through in pass-band and T.38 real-time fax relay when paired with a T.38-enabled Cisco IOS image.
Supported protocols include MGCP, H.323 and SIP. Protocol support depends on the installed Cisco IOS feature set.
Yes. You must install the Cisco Unified Communications or Enhanced Services license for full voice and fax feature activation.
Power down the router, slide the module into the high-density voice slot until it clicks, then secure and power up. Follow the Cisco hardware installation guide.
No. To prevent service disruption, you must power down the router before installing or removing the EM-HDA-3FXS/4FXO module.
The module draws up to 10 W from the router’s internal power supply; ensure your router PSU supports the additional load.
It supports G.711μ-law/A-law for high-quality voice and G.729a for bandwidth-efficient calls, subject to DSP capacity.
Yes. Caller ID name and number delivery is supported using Bellcore, ETSI and DTMF-based signaling on FXS ports.
Use Cisco IOS 15.2(4)M or later with the enhanced failover and fax relay features enabled for optimal performance.
Define POTS dial peers in global configuration: specify session target, port type (FXS/FXO), port number, and codec, then apply dial-peer commands.
This Cisco module is covered by a 90-day limited hardware warranty, extendable with Cisco SMARTnet support contracts.
Authorized Cisco partners, the Cisco online store and certified resellers offer genuine modules with full warranty and support.
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