ADTRAN 1200063L1, Manual

Page: 35 / 137

Chapter 3. Operation
61200063L1-20 DSU III TDM User Manual 3-5
Multiplexer Status
Messages indicating the muliplexer status include the following:
:
Errored Seconds
The number of errored seconds encountered (up to a maximum of 255) in
multiplexer frames is displayed. Errored seconds can be caused by vari-
ous conditions including the following:
• Poor telco circuit
• Bad cabling to the DSU III TDM
• DSU III TDM malfunction
The errored seconds can be cleared to 000 by pressing
1
while the errored
seconds are displayed.
Normal The multiplexer has achieved frame
synchronization and is ready to pass data.
Out of Sync The multiplexer has not been able to achieve
frame synchronization and cannot pass data.
Possible reasons for no synchronization are:
•
Unit not connected to telco circuit
• No multiplexer on far end of telco
• Bad or noisy telco circuit
• Test in progress
INV CFG
PORTx (x=1-4) Normal Operation of the DSU III TDM
requires that the local
DTE R
ATE
and DTE F
ORMAT
be the same as the remote options on a port by
port basis. The
INV CFG PORT
message is an
indication that one or both of these options is not
configured the same on both ends on the indicated
port. To clear this error, configure the local
DTE
R
ATE
and D
ATA
F
ORMAT
options. The remote
options are updated automatically to match the
local options.