Fault Classes - Alcatel MainStreet 2902 Manual

15 — E1 module operating parameters
Procedure 15-6 To disable trunk conditioning for an E1 circuit
If you turn fault signaling off for any E1 circuit, no trunk conditioning is applied to that
circuit regardless of how the link is configured for trunk conditioning. That is, the circuit
connected to the link stays connected during any red or yellow alarms. See section 16.2
for more information on E1 circuit fault signaling.
CONFIG — CIRCUIT — <Pp-c> ↵ — FAULT_SIG — NONE
where p is 1 or 2, and c is 1 to 31
15.7

Fault classes

Trunk conditioning can be enabled or disabled for various classes of primary rate link
faults. If trunk conditioning is enabled for an alarm class, one- or two-way trunk
conditioning is applied as configured for the primary rate interface when an alarm in
that class is raised. If trunk conditioning is disabled for an alarm class, no action is
taken when an alarm in that class is raised.
Table 15-3 lists the four configurable fault classes.
Fault class
Frame
Distant
Failed
Error
15-12
Table 15-3 Fault classes and alarms
Alarms Description
Framing Alarm Includes alarms associated with
Incoming AIS frame alignment or multiframe
Multiframe Alarm alignment.
Incoming TS16 AIS
Distant Alarm TS16 Includes alarms that are received
Distant Alarm from the equipment at the far end
of the primary rate link.
Failed State Includes only the Failed State
alarm. This alarm is raised when
10 severely errored seconds in a
row have occurred.
Framing (FAS) Err Includes only the Framing Err
Rate Exceeded Rate Exceeded alarm. It is raised
when the FAS error rate exceeds
approximately 10
4 to 6 seconds.
Clearing
Cleared when frame
alignment or multiframe
alignment is regained.
Cleared when the remote
equipment is no longer
transmitting the alarm.
Cleared when
10 non-severely errored
seconds have occurred in
a row.
Cleared when the FAS
error rate is below
approximately 4 x 10
-3
for a period of 9 to 11 seconds.
2902 MainStreet Technical Practices
90-2906-01
-4
for
May 2002