RuggedCom RuggedRouter RX1100 - Manual (Page 74)

7. Configuring Frame Relay/PPP And T1/E1
Revision 1.14.3 74 RX1000/RX1100™
7.2.5. T1/E1 Statistics
When at least one logical interface is configured, T1/E1 Link and logical interface statistics will be
available. These statistics are available from links on the T1/E1 WAN Interfaces menu.
Link Statistics are provided through the View Link Statistics link at the bottom of each interface table.
Frame Relay and PPP statistics are available through (Statistics) links under the interface name
column of each interface table.
7.2.5.1. Link Statistics
Figure 7.8. T1/E1 Link Statistics
The Link Alarms indicate ongoing problems.
ALOS/LOS (Loss of Signal) – This alarm indicates a complete absence of synchronization pulses on
the line.
RED (Red Alarm) - This is a local equipment alarm. It indicates that the incoming signal has been
corrupted for a number of seconds. This equipment will then begin sending a yellow alarm as its
outbound signal.
AIS (Alarm Indication Signal, or BLUE alarm) - This alarm indicates the total absence of incoming
signal as a series of continuous transitions (an all 1's pattern) is received.
YEL (Yellow Alarm) – This alarm is transmitted to the network and alerts it that a failure has been
detected.