ADTRAN 1200305L1 system manual External Alarm Relay Monitor Connection, Network Interface Modules

Section 2, Engineering Guidelines ATLAS 550 System Manual

External Alarm Relay Monitor Connection

This connection alerts the user when a selected external alarm condition exists. This connection could be used to monitor a UPS with dry contacts or another ATLAS 550. The 2-pin, removable terminal block connects with external wiring. Refer to DLP-014,Connecting the Alarm Contacts for detailed instructions. Clear the alarm condition by pressing the ACO switch located on the front panel of the ATLAS 550.

Table 8 shows the pinout for the External Alarm Relay connector.

		Table 8. 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.

5.NETWORK INTERFACE MODULES

The ATLAS 550 provides two Network Interface Slots that allow different types of interfaces to be used. The following is a discussion of the available Network Interface Modules.

T1/PRI Network Interface Module (P/N 1200307L1)

The T1/PRI Network Interface (NI) Module provides a single T1/PRI port and complies with the applica- ble ANSI and AT&T® standards. The T1/PRI 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 9 below and Table 10 on page 33.

Connector type		(USOC) RJ-48C
		Table 9. T1/PRI Network Interface Module 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	—

32 © 2002 ADTRAN, Inc. 61200305L1-1F