Refer to Physical Details in "E1 Setup and Status". The nominal bit rate of E4 is
139 264 000 bps.
55..77..33..33 Alarms and ErrorsAlarms and Errors
Touching the middle summary box in the status area of the Ports SetupPorts Setup screen
displays the status shown below.
This screen contains detailed alarm and error information related to the E4
interface. Status is indicated by the use of colored Lamp icons.
Alarms
LOSLOS: Loss of Signal
AISAIS: Alarm Indication Signal
No frameNo frame: No frame
DistantDistant: Distant
No SyncNo Sync: No synchronization
Errors
FAS wordsFAS words: Frame Alignment Signal words
Pattern errorPattern error: Pattern error
Pattern slipsPattern slips: Pattern slips
55..77..44 Errors/Alarms InsertionErrors/Alarms Insertion
Refer to Errors/Alarms Insertion in E1 Setup and Status section.