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Hardware feature descriptions 3-37
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Figure 3-20
BNC 12-Port Rear I/O module (NTN452KA)
EX1155p
Common modules
OPTera Metro 3500 Shelf and the OPTera Metro 3500 Universal Shelf support
replaceable common modules in Table 3-5 on page 3-28.
Left OAM (LOAM)
(NTN451MA, NTN451MH)
The LOAM supports the following:
• RS-232 terminal
• building-integrated timing supply (BITS)
• telemetry byte-oriented serial (TBOS) protocol
• environmental alarms
• shelf alarms
• X.25 terminal
• ILAN
• central office LAN (COLAN)
The LOAM attaches to the LIF and hinges out to face the front of the OPTera
Metro 3500 Shelf. See Figure 3-21 for the details of the LOAM.
See Table 3-3 on page 3-6 for operational temperature ranges.
Port 4
Port 8
Port 12
Alignment
tab
Lock/eject
lever
Out
In
Out
In
Out
In
Port 1
Port 5
Port 9
Out
In
Out
In
Out
In