Connector pin assignments 777Telephone trunks connect to the E and M Trunk card at the MDF using awiring plan similar to that used for line cards.A typical connection example is shown in Figure 252 "E and M Trunk card- typical cross connection example" (page 779). A list of the connectionsto the E and M Trunk card in the various 2-wire modes is shown in Table297 "E and M Trunk card - backplane pinouts for 2-wire modes" (page 777).A list of the connections to the E and M Trunk card in the various 4-wiremodes is shown in Table 298 "E and M Trunk card - backplane pinouts for4-wire modes" (page 777).See Communication Server 1000M and Meridian 1 Large SystemInstallation and Configuration (NN43021-310) for complete I/O connectorinformation and wire assignments for each tip/ring pair.Table 297E and M Trunk card - backplane pinouts for 2-wire modes2-wire Paging Mode 2-wire Type I ModeTrunkNumber Pin Signal Pin Signal Pin Signal Pin Signal12B Tip 12A Ring 12B Tip 12A Ring015B A 15A PG 14B E 14A M16B Tip 16A Ring 16B Tip 16A Ring119B A 19A PG 18B E 18A M62B Tip 62A Ring 62B Tip 62A Ring265B A 65A PG 64B E 64A M66B Tip 66A Ring 66B Tip 66A Ring369B A 69A PG 48B E 68A MTable 298E and M Trunk card - backplane pinouts for 4-wire modes4-wire Type I Mode 4-wire Type II ModeTrunkNumber Pin Signal Pin Signal Pin Signal Pin Signal12B TA 12A TB 12B TA 12A TB13B RA 13A RB 13B RA 13A RB14B E 14A M 14B EA 14A EB015B ECG 15A ESCG 15B MA 15A MBNortel Communication Server 1000Circuit Card ReferenceNN43001-311 01.04 StandardRelease 5.0 23 May 2008Copyright © 2003-2008, Nortel Networks.
