ADTRAN 550 Network Connection, External Relay Monitor Connector Pinout, Network RJ-48C Pinout

Chapter 2. Installation

Table 2-5 shows the pinout for the External Alarm Relay connector.

		Table 2-5. External Relay Monitor Connector Pinout
Pin	Name	Description
1	Alarm Out	Outputs EIA-232 level signal for connection to external
		alarm contacts.
2	Alarm In	Monitors signal coming from external alarm contacts.

Network Connection

The ATLAS 550 provides two Network Interface Slots that allow different types of interfaces to be used. Currently only a T1 Network Interface is avail- able. In the remainder of this manual, discussions about the Network Inter- face Module refer to the T1 Network Interface Module. The T1 Network

Interface (NI) port complies with the applicable ANSI and AT&T® stan- dards. The T1 Network Interface Module provides the following functions:

•AMI or B8ZS coding

•Manual line build-out

•D4 or ESF framing

•Network performance monitoring and reporting

•Test loopbacks with QRSS generation and checking

•Extensive self-testing

The network connections follow, with the pinouts shown in Table 2-6 and

Table 2-7 on page 2-8.

Connector type		(USOC) RJ-48C
Part number		AMP# 555164-2
			Table 2-6. Network RJ-48C Pinout
	PIN	NAME	DESCRIPTION
	1	R1 RXDATA-RING	Receive data from the network
	2	T1 RXDATA-TIP	Receive data from the network
	3	UNUSED	—
	4	R TXDATA-RING	Transmit data toward the network
	5	T TXDATA-TIP	Transmit data toward the network
	6, 7, 8	UNUSED	—

61200305L1-1 ATLAS 550 User Manual 2-7