Nortel Networks 553-3001-211 manual T1 connections, External alarm connections

Page 206 of 894 NT5D11 and NT5D14 Lineside T1 Interface cards

Table 81

Lineside T1 card – NT5D13AA connector pinouts (Part 2 of 2)

		NT5D13AA
		Lineside
I/O panel		T1 I/O	Lineside T1 cable
connector		connector	connector to external
pin	Lead designations	pin	equipment
33	Ground	5	DB9 female away from MMI (P4)
			Wired as DTE
8	Control 1	7
			Data is transmitted on pin 2 (TXD)
32	Control 2	9	and received on pin 3 (RXD)
30	Away from MMI terminal	3
	Transmit Data
6	Away from MMI terminal	2
	Receive Data

T1 connections

T1 signaling for all 24 channels is transmitted over P2 connector pins 1, 3, 9, and 11 as shown in Table 81 on page 205. Plug the DB15 male connector labeled “P2” into the T1 link. T1 transmit and receive pairs must be turned over between the lineside T1 card and CPE equipment that is hardwired without carrier facilities. If the lineside T1 card is connected through T1 carrier facilities, the transmit and receive pairs must be wired straight through to the RJ48 at the Telco demarc, the CSU, or other T1 carrier equipment. The T1 CPE equipment at the far end will also have transmit and receive wired straight from the RJ48 demarc at the far end of the carrier facility.

External alarm connections

P3 connector pins 3, 4, and 28 can be plugged into any external alarm hardware. Plug the male DB9 connector labeled “P3” into the external alarm. These connections are optional, and the functionality of the lineside T1 card is not affected if they are not made.

The MMI (described in detail in “Man-Machine T1 maintenance interface software” on page 213) monitors the T1 link for specified performance criteria and reports on problems detected.

553-3001-211 Standard 2.00 September 2004