The Cisco DPC2203 Cable Modem is a high speed modem an embedded media terminal adapter (EMTA). The Cable Modem features two RJ-11 telephone ports that provide VoIp service . Also comes with a 10/100 BASE=T Ethernet port and a USB 1.1 port for High a High Speed Connection.
The DPC2203 is designed to meet all the PacketCable 1.5, PacketCable 1.0, and DOCSIS 2.0 specifications with the ability of working backwards compatible with DOCSIS 1.1 and 1.0 networks. The DPC2203 uses advanced line-interface technology to provide multi-country, toll-quality, telephone service using existing in-home wiring.
The DPC2203 has 10REN total, with 5 REN being available for each phone line.The DPC2203 fully supports the CODECs specified in PacketCable 1.5. Standard VoIP call signaling is compliant with PacketCable’s (MGCP/NCS) specifications.