AEST means awaiting establishment. This usually means that your dch is NET (master) and is waiting for a USR(slave) to reply. If you haven't got anything connected on the PRI (not in use), it's usually best to at least disable the DCH or out it completely.
Check in ld 60 for the loop status. If you've got a red alarm it6 means the physical layer is down.
STAT DCH x Get the present status of D-channel x, where x is the I/O port number (entering x to specify just one link is optional).
DCH status may be:
• EST = DCH link is established
• EST STBY = DCH link is established and is the standby
• FAIL = DCH link has failed
• RLS = DCH link is released
• RST = DCH link is in reset state
• AEST, ARLS, REST = these codes indicate intermediate background functions are being performed.
Enter the STAT command again to determine final
status.
STAT DCH (x) Get status of one or all D-channels.
If a DCH number is not entered, the status of all D-channels isoutput. The output format is:
DCH x : aaaa bbbb cccc dddd x
Where:
• x = DCH number
• aaaa = application status
• bbbb = link status
• cccc = AUTO if autorecovery is enable
• dddd = BKUP x or PRIM x (associated primary or
backup DCH)
Application status (aaaa):
• APRI = Awaiting PRI response
• CPRI = Checking PRI
• DIAG = application has failed
• DSBL = application is disabled
• OPER = link is operational
• RST = application is in reset state
• SDCH = Setting D-channel
Page 432 of 500 Alphabetical list of commands
553-3001-511 Standard 9.00 January 2002
LD 96
Link status (bbbb):
• AEST = Awaiting establishment
• ARLS = Awaiting release
• EST ACTV = DCH link is established and active
• EST STBY = DCH link is established and is the standby
• FAIL = DCH link has failed
• REST = request establishment
• RLS = DCH link is released
• RST = DCH link is in reset state
• TST = Test mode
