EN2251-HSP

DOCSIS 3.1 Cable Modem with Voice

The Hitron EN2251-HSP delivers DOCSIS 3.1 speeds up to 10× faster than DOCSIS 3.0, with a downstream up to 1.2 GHz. Featuring dual HD voice ports and optional battery backup, it supports hybrid homes with both connectivity and voice resiliency.
Only sold through Service Providers
DOCSIS 3.1 Cable Modem from Hitron EN2251-HSP

DOCSIS 3.1 with Extended Downstream

Expands broadband capacity and enables ultra-fast service without entering DOCSIS 4.0 yet.

 

Switchable Upstream (5–85/5–204 MHz)

Easily upgrade upstream speeds remotely, giving operators flexibility in deployments.

 

Voice Over Coax Support

Built-in dual HD voice ports with battery backup ensure voice reliability even during power outages.

 

2.5 Gbps Connectivity

Enables high-performance wired access for routers, set-top boxes, and home network needs.

 

Telemetry Assist

Provides proactive diagnostic data, helping operators monitor connection quality, identify issues remotely, and reduce support costs.

 

Benefits for Service Providers

  • Enhanced Visibility with Telemetry Assist – Delivers real-time diagnostics and performance data, enabling proactive monitoring, faster troubleshooting, and fewer customer support calls.
  • High-Split Support – Expands upstream capacity to support faster upload speeds, positioning operators to deliver new multi-gigabit service tiers.
  • Voice-Ready Platform – Integrated eMTA with voice ports allows operators to deliver broadband and carrier-grade telephony in a single device.
  • Operational Efficiency – Remote management and advanced diagnostics minimize truck rolls, lower support costs, and improve customer satisfaction.

Key Specifications

  • DOCSIS: 3.1 (2×2 OFDM/OFDMA) + 3.0 (32×8)
  • Downstream: Up to 1.2 GHz
  • Upstream: Switchable 5–85 / 5–204 MHz
  • Ethernet: 1× 2.5 Gbps
  • Voice: 2× HD Voice Ports (SIP/MGCP), Optional Battery
  • Management: Telemetry Assist, TFTP, SNMP, remote diagnostics

Documentation

Other Products to Consider

Product
Modem Type
DOCSIS 3.1 (32x8)
DOCSIS 3.1 (32x8)
DOCSIS 3.1 (32x8)
Frequency
Switchable 5-42/5-85MHz
Switchable 5-85/5-204MHz, Extended Downstream up to 1.2 GHz
Switchable 5-85/5-204MHz, Extended Downstream up to 1.2 GHz
WiFi
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Wired LAN
1x 2.5GigE
1x 2.5GigE
1x 2.5GigE
Voice
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2 Voice Ports + External Battery
*DOCSIS 3.1 is a CableLabs standard for high speed Internet access that defines support for up to 10 Gbps downstream and 1 Gbps upstream. Actual cable operator network speeds will vary and will be less than the calculated maximum possible speeds. Actual upload and download speeds are affected by several factors including, but not limited to: the capacity of your cable operator’s network, the services offered by your cable operator, cable and Internet network traffic, your computer equipment etc.

Deliver premium tier service plans and an ultimate broadband experience with the EN2251-HSP DOCSIS 3.1 modem.

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