HP BER 718 37718A manual Setting Sonet Thru Mode, OC-1/STS-1, OC-3/STS-3, OC-12, OC-48

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 OFF . 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 TRANSMIT and RECEIVE displays, See
	"Setting SONET Transmit Interface " page 4 and "Setting SONET
	Receive Interface " page 17.

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