ADTRAN Atlas 550 - Manual (Page 43)

Chapter 2. Installation
61200305L1-1 ATLAS 550 User Manual 2-7
Table 2-5 shows the pinout for the External Alarm Relay connector.
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.
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.
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 —