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NM-HDV2-1T1/E1
IP Communications High-Density Digital Voice NM with 1 T1/E1...
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NM-HDV2-1T1/E1 is a WAN module designed specifically to provide a T1/E1 interface for legacy telecom and digital voice network applications. This module supports the standard data rates of 1.544 Mbps for T1 and 2.048 Mbps for E1, and it features an RJ-48 connector for reliable connectivity in digital transmission systems.
Engineered in a modular form factor, NM-HDV2-1T1/E1 is ideal for installation in chassis-based routers and digital switching equipment, enabling service providers and enterprises to integrate voice and data services seamlessly. Its robust design and focused feature set make it suitable for upgrading legacy systems and expanding network connectivity where T1/E1 circuits are required.
NM-HDV2-1T1/E1 price is $1,204.00, a 56.1% saving from the Cisco list price of $2,740.00. NM-HDV2-1T1/E1 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for NM-HDV2-1T1/E1 for additional pricing. Browse the full Nm Nme Em Network Modules series or explore all Cisco products.
A nationwide retail chain operating dozens of remote stores replaces standalone T1/E1 voice routers with Cisco ISR 4000 series equipped with the NM-HDV2-1T1/E1-IP High-Density Digital Voice Network Module. The module consolidates up to 24 T1/E1 voice channels into IP, enabling unified voice/data transport over a single MPLS link. Benefit: reduces site equipment footprint by 50%, cuts monthly WAN costs by 30%, and accelerates feature rollout via centralized Cisco DNA Center management.
A tier-2 telecom provider deploys the Cisco NM-HDV2-1T1/E1-IP High-Density Digital Voice NM on ASR 1000 routers in its central office to aggregate hundreds of legacy T1/E1 circuits into an IP backhaul cloud. Advanced DSP resources handle G.711/G.729 transcoding, echo cancellation, and CAS/PRI signaling in hardware. Benefit: achieves 40% higher port density per rack unit, accelerates new revenue streams with on-demand voice trunk provisioning, and delivers carrier-grade MOS >4.0 voice quality.
A multinational bank implements dual Cisco 4000 series routers with NM-HDV2-1T1/E1-IP High-Density Digital Voice Network Modules at each data center for its mission-critical trading floors. Leveraging Cisco HSRP and VRRP, active T1/E1 voice sessions seamlessly fail over to backup links upon link degradation. Benefit: ensures 99.999% voice uptime for compliance with financial SLAs, eliminates revenue impact from downtime, and maintains seamless trader communication under any network condition.
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| NM-HDV2-1T1/E1 |  NME-VMSS-HP16 |  GE-DCARD-ESW |  NM-1A-T3/E3 |  NM-1FE-FX-V2 | |
|---|---|---|---|---|---|
| Product Type | Network Module | Network Module | Network Card | Network Module / Network Card | Network Module |
| Module Type | WAN | Ethernet | Ethernet | Ethernet | Ethernet (Fast Ethernet Fiber) |
| Data Rate | 1.544 Mbps / 2.048 Mbps | 10Gbps | 10G | 10G | 100Mbps |
| Connector Type | RJ-48 | SFP28 | RJ-45 | SFP+ | SC Duplex |
| Form Factor | Modular | PCIe | PCIe | PCIe | 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 | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Product Name | NM-HDV2-1T1/E1 | NME-VMSS-HP16 | GE-DCARD-ESW | NM-1A-T3/E3 High-Performance 10G Ethernet Module | NM-1FE-FX-V2 |
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.
Handled digital voice with T1 integration reliably.
Good quality and stable signaling.
Easy integration with voice infrastructure.
No call quality issues noticed.
Dependable voice module.
The Cisco NM-HDV2-1T1/E1 is a high-density digital voice network module providing one T1/E1 port for voice and data on supported Cisco 2800 and 3800 Series routers.
This module is compatible with Cisco 2800 Series, 2900 Series, 3800 Series, and 3900 Series Integrated Services Routers that feature a Network Module slot.
It supports up to 30 voice channels on an E1 interface or 24 voice channels on a T1 interface, enabling high-density digital voice deployments.
Yes, the NM-HDV2-1T1/E1 supports both SIP and H.323 voice-over-IP protocols with Cisco IOS voice feature sets installed.
You need the Cisco Unified Communications licensing—either UC Advantage or UC Essential—on the parent router to activate digital voice ports.
Installation involves sliding the module into an available Network Module slot on a compatible router and securing it with the provided captive screws.
Typical power consumption is approximately 10W under normal voice load, depending on codec usage and number of active channels.
No, the NM-HDV2-1T1/E1 is factory-configured for either T1 or E1; you must select the correct SKU for your region’s digital circuit.
Supported codecs include G.711 μ-law/a-law, G.729a/b, G.723.1, and G.726, delivering flexible bandwidth and quality trade-offs.
Yes, it supports fax relay and modem passthrough with T.38 and fax relay in Cisco IOS, ensuring reliable T.38 fax over IP.
It can handle up to 30 concurrent calls on E1 or 24 concurrent calls on T1 when using standard voice codecs.
Yes, the module supports Cisco Quality of Service features, including traffic classification, marking, policing, and queuing for voice prioritization.
Operating conditions are 0°C to 40°C with 5%–90% non-condensing humidity as specified in the Cisco environmental data sheet.
Cisco provides a limited lifetime warranty on NM modules and offers optional Smart Net Total Care support for accelerated replacement and updates.
Use Cisco IOS CLI commands under interface serial to set framing (framing esf/ccs), clock rate, linecode (ami/b8zs/hdb3), and channel-group settings.
You can purchase through authorized Cisco partners, resellers, or the Cisco online store; pricing varies by region and support package.
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