VeEX MPA User Manual page 382

MPA_e_manual_D07-00-129P_RevA00
3. Select the APS button. The initial APS screen appears containing a table of the
K1 and K2 byte sequences that can be transmitted. A total of 16 K1 and K2 byte
sequences can appear in the table.
4. Select a byte sequence button (for example,
The Apply Maintenance to Entry
configure and set the measurement criteria of the K1 and K2 bytes.
5. Use the APS Mode function to configure APS commands for Linear protection
switching mode or Ring APS signaling mode.
6. Edit the K1 byte.
The K1 byte is a request for switch action. There are three functions that allow
you to edit the K1 byte:
•
Use the K1 Full Byte function to set all eight bits of the K1 byte at once.
•
Use the K1 Bits 1-4 function to set the first four bits of the K1 byte.
•
Use the K1 Bits 5-8 function to set the last four bits of the K1 byte.
7. Edit the K2 byte.
The K2 byte provides additional information about SONET network architecture
and alarm conditions. There are four functions that allow you to edit the K2 byte:
•
Use the K2 Full Byte function to set all eight bits of the K2 byte at once.
•
Use the K2 Bits 1-4 function to set the first four bits of the K2 byte.
•
Use the K2 Bit 5 (provisioned) function to set the fifth bit of the K2 byte.
•
Use the K2 Bits 6-8 function to set the last three bits of the K2 byte.
8. Select Duration in Frames to determine how many frames will be transmitted
containing the newly configured K1 and K2 bytes.
9. Select Update. The initial APS screen appears on the touch screen.
10. To configure additional K1 and K2 bytes, repeat steps 3-8 as described above.
Otherwise, proceed to the next section to transmit K1 and K2 bytes.
To transmit K1 and K2 bytes:
1. Make sure that K1 and K2 byte sequences are configured as described above.
2. Select Start to transmit the K1 and K2 bytes.
).
screen appears. It contains functions used to
SONET Tab
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