Nortel Communication Server 1000 Series Manual page 28

28 Product description
a command over the MMI terminal or by pressing the ALM CLEAR button
on the Fiber Remote Multi-IPE Interface unit faceplate at the local or the
remote site.
On-line diagnostics do not interfere with normal system operation and
are performed on an active link.
Off-line diagnostics can interfere with normal system operation and are
performed on an idle or faulty fiber-optic link or a disabled superloop. To
minimize the impact of off-line testing, a superloop should first be software
disabled and then tested while the other superloops are carrying traffic.
The off-line diagnostic testing can perform loopback tests of the superloop
data, clock and frame signals, and on the fiber-optic link.
Commands can be issued over the MMI terminal to specify the superloop
that should be tested and the duration of the test. Multiple superloops can
be simultaneously tested, if so desired.
To perform loopback testing of the fiber-optic link, an attenuated loopback
fiber-optic cable must be used at the end of the link that is being looped
back. This test is used to verify the performance of the fiber-optic link and
the Fiber Remote Multi-IPE Interface unit fiber-optic interface circuits.
Card-LAN interface
The Card-LAN is a 19.2 kbps asynchronous interface. It is used to poll
intelligent peripheral equipment lines and communicate over the fiber-optic
link to transmit maintenance messages between the Superloop Network
card and the Peripheral Controller. These messages include:
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Alarms and LED indicators
The Fiber Remote Multi-IPE Interface provides LED indicators and external
alarm connections to enable error detecting and external alarm reporting.
External alarm indicators. The Fiber Remote Multi-IPE Interface unit
I/O panel contains the DB-9 female ALM connector which connects the
external alarms to the Fiber Remote Multi-IPE Interface unit.
Copyright © 2007-2009 Nortel Networks
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LED control of the IPE card enable/disable
peripheral card configuration
peripheral card type and version information
Nortel Communication Server 1000
Fiber Remote Multi-IPE Interface Fundamentals
NN43021-556 03.01
11 May 2009