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Setting the Interfaces
Setting SONET THRU Mode
Setting SONET THRU Mode
Description THRU mode is used to non-intrusively monitor SONET lines where no
protected monitor points are available.
As THRU mode locks some user settings, you must set SIGNAL RATE,
STS rate, STS-1 SPE CHANNEL (if appropriate) before selecting THRU
mode.
The entire frame can be errorred at a user defined rate if PAYLOAD
OVERWRITE and TOH+POH CHANNEL OVERWRITE are both set to
. If either overwrite is enabled the ENTIRE FRAME ERROR RATE
function is disabled.
OC-1/STS-1, OC-3/STS-3
You can substitute a new payload, Section and Line Overhead (TOH) and
Path overhead (POH) in the received OC-1/STS-1 or OC-3/STS-3 signal
for testing.
OC-12, OC-48
The overhead and payload may be overwritten for STS-3c SPE and AU3.
PAYLOAD OVERWRITE is not available for STS-12C or STS-48C.
TOH+POH CHANNEL overwrite is available for STS-12C and STS-48C.
HOW TO:
1 Make the required SIGNAL RATE, MAPPING and CHANNEL
choices on the SONET and displays, See
"Setting SONET Transmit Interface " page 4 and "Setting SONET
Receive Interface " page 17.
OFF
TRANSMIT
RECEIVE