Nortel Enterprise 1000 Reference Manual

Also see for 1000 Con?guration guide: Brochure Reference User manual Overview User guide

Contents

Nortel Enterprise 1000 Reference Manual Manual pdf 105 page image

NT8D15 E&M Trunk Card Page 105 of 236Succession Communication Server for Enterprise 1000 Circuit Card Reference GuideFigure 36E & M Type I signalingCard control functionsControl functions are provided by a microcontroller, a card LAN, andsignaling and control circuits on the E&M trunk card.MicrocontrollerThe E&M trunk card contains a microcontroller that controls the internaloperation of the card. The microcontroller provides the following functions:• card-identification• self-test• control of card operation• maintenance diagnosticsEE&M trunk card External signaling circuitMEM553-CSE6258Ð 48VÐ 48V