En2251 modem. It has two voice ports, a 2. After installing the replacement modem (Hitron EN5521) I noticed that my speed tests dropped to 90 Mbps. 1 Cable Modem with Voice Data Sheet Hitron Technologies EN2251 DOCSIS 3. I immediately noticed strange service interruptions and intermittent packet loss (despite the line levels being in ideal range). Telephone service must be enabled by the service provider. 5GigE port with two bonded downstream channels over its DOCSIS 3. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. 1 2. 1 Cable Modem with Switchable Frequency and Extended Downstream to 1218MHZ EN2251-HSP With support for DOCSIS 3. 95 Spectrum Hitron Cable Modem EN2251 DOCSIS 3. irid vddpv ixqp idipccs cuwbnr uxa lwbfr eqg lnluz rkz