HP BER 718 37718A manual Setting Sonet Transmit Interface

Setting the Interfaces

Setting SONET Transmit Interface

4Choose FOREGROUND F/G MAPPING , BACKGROUND B/G MAPPING MAPPING and type of payload.

Mapping may be selected from a pictorial display by moving the cursor to MAPPING and pressing SET .

Use and to move between STS Layer choice, VT Layer choice and

Payload Layer choice. Use and to choose the mapping. Use SET to confirm your choice and return to the SONET MAIN SETTINGS display.

5 If VT-6 mapping is chosen, VT CONCATENATION selection is

enabled, choose OFF or the tributary at which the concatenation

begins, VT6-2C through VT6-6C.

The BACKGROUND, PATTERN IN OTHER VT-6’s is fixed at NUMBERED, that is, each VT-6 contains a unique number to allow identification in case of routing problems.

6If required, choose DS1/2M/34M/DS3 OFFSET value. See “Adding Frequency Offset to SONET Signal” page 31

7If FULL SPE, VT-6, VT-2 or VT-1.5 mapping is chosen, choose the test tributary CHANNEL, including the STS-3 for an OC-12/OC-48 signal.

8Choose the payload framing under PAYLOAD TYPE or VT PAYLOAD. If STRUCTURED is required FRAMED must be chosen.

If STRUCTURED is chosen, the Payload test signal must be set up. See “Setting Transmit Structured Payload/Test Signal” page 37.

If INSERT is chosen, see “Inserting an External DSn Payload/Test Signal” page 43.

5