Voice telephone:RJ45 shielded category 5e information outlet,with two outside lines,which are one incoming four-outgoing and one-incoming two-outgoing respectively. Router:5-10/100M self-adapting computer Router, for four computers connecting with the Wide Band at the same time. Cable TV:One-incoming four-outgoing(5-100/MHz), F type standard interface. Supervisory signal module:two pairs of(BNC)radio frequency connectors,allow adaptation and butt joint of? monitoring or vide. Light current signal module:20 pairs of light current signal transfer terminals,provide intermediate contact for security and remote meter reading system of three meters