722 NT8D15 E and M Trunk cardThe E and M Trunk card connects to the backplane through a 160-pinconnector shroud. External equipment connects to the card at the backof the Media Gateway using a 25-pin connector. Telephone lines fromstation equipment cross connect to the OPS analog line card at the MDFusing a wiring plan similar to that used for line cards. See CommunicationServer 1000M and Meridian 1 Large System Installation and Configuration(NN43021-310) for termination and cross connect information.Figure 223 "E and M Trunk card - faceplate" (page 721) illustrates thefaceplate of the E and M Trunk card. The words "Dict Trk" appear on thefaceplate label because earlier versions of this card provided dictation trunkconnections for third-party equipment.The faceplate of the card is equipped with a red LED. When an E and MTrunk card is installed, the LED remains lit for two to five seconds whilethe self-test runs. If the self-test completes successfully, the LED flashesthree times and remains lit. When the card is configured and enabled insoftware, then the LED goes out. If the LED continues to flash or remainsweakly lit, replace the card.In Option 11C systems the NT8D15 E and M Trunk Card is installed inslots 1 through 10 of the Main cabinet, or in slots 11 through 50 of theExpansion cabinets.Each card provides four circuits. Each circuit connects with the switchingsystem and with the external apparatus by an 80-pin connector at the rearof the pack.Each trunk circuit on the card connects to trunk facilities by tip an ring leadswhich carry voice, ringing, tone signaling and battery. Trunk option selectionis determined by software control in LD 14.Nortel Communication Server 1000Circuit Card ReferenceNN43001-311 01.04 StandardRelease 5.0 23 May 2008Copyright © 2003-2008, Nortel Networks.
