DOCSIS 3.1 Cable Modem with a 2.5 GigE Port and Voice


Be ready for multi-Gigabit service plans, today and tomorrow, with the EN2251-HSP. This powerful modem supports DOCSIS 3.1, with extended support up to 1.2 GHz downstream and software-switchable upstream up to 204 MHz. Residential and business customers will enjoy the ultimate broadband experience, with Internet speeds over 1 Gbps downstream and premium-tier upstream speeds too. The result is smoother streaming, faster online gaming, enhanced interactive experiences and more. The EN2251-HSP supports 2.5 Gbps Ethernet so operators can take full advantage of DOCSIS 3.1’s multi-Gigabit capability.
Only sold through Service Providers
DOCSIS 3.1 Cable Modem from Hitron - EN2251-HSP

DOCSIS 3.1 with Extended Downstream up to 1.2 GHz

DOCSIS 3.1 takes Internet speeds to a new level, increasing the capacity of HFC networks by more than 50 percent and reducing latency. DOCSIS 3.1 supports download speeds up to 10 times faster than DOCSIS 3.0, so you can offer premium tier service plans over 1 Gbps over your existing HFC plant. The EN2251-HSP supports downstream frequency up to 1.2 GHz.


Software-switchable Upstream 5-85/5-204 MHz

Easily meet subscriber demands for more upstream bandwidth with the software switchable return path. Want to upgrade customers to higher-tier upstream speeds? No problem. You can remotely change to the high-split (5-204MHz) return path at any time without sending out a technician or changing hardware.


Compatible with DOCSIS 3.0

Deploy the EN2251-HSP on your current DOCSIS 3.0 networks. As a DOCSIS 3.0 modem, it offers 32 bonded downstream and 8 bonded upstream channels. You won’t need to swap out your customer’s hardware when it’s time to upgrade to the higher speeds and capacity of DOCSIS 3.1.


Eliminate LAN Bottlenecks with a 2.5 Gigabit Port

Equipped with a 2.5 Gbps Ethernet port, the powerful EN2251-HSP can support service plans over 1 Gbps.


Two HD Voice Ports and an Optional Backup Battery

The EN2251-HSP can meet your subscriber’s voice needs with its two integrated HD telephony ports. There’s an optional backup battery for uninterruptable service during a commercial power outage.


Easy to Set Up and Manage

The EN2251-HSP installs in just a few simple steps. The built-in TFTP client automatically gets the IP address and configuration data from the network server. And you can remotely control the device via SNMP for fast and effective troubleshooting and management.

Key specs

  • DOCSIS 3.1 2×2 multi-carrier OFDM
  • DOCSIS 3.0 32×8 channel bonding
  • Software-switchable 5-85/5-204 MHz upstream
  • Supports Business Services over DOCSIS
  • Extensive operator control via configuration file and SNMP
  • 2 HD voice ports with SIP or MGCP support
  • Built-in MoCA immunity filter
  • 2.5 Gbps LAN port
  • Supports IPv4 and IPv6
  • Optional external battery available

Other Products to Consider

Modem Type
DOCSIS 3.1 (32x8)
DOCSIS 3.1 (32x8)
DOCSIS 3.1 (32x8)
DOCSIS 3.1 (32x8)
Fixed 5-85MHz
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
Wired LAN
2x GigE
1x 2.5GigE
1x 2.5GigE
1x 2.5GigE
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.

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

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