VeEX MPA User Manual page 508

MPA_e_manual_D07-00-129P_RevA00
8. Turn the laser On.
9. Select Receive and choose SIG. Ensure that a valid signal is being received.
10. If any errors or alarms are being received, then resolve the errors or alarms
being detected before continuing.
11. Select the
settings.
Configuring APS (K1 and K2) Commands
The following only applies to SONET and SDH protocol processors.
Automatic Protection Switching (APS) is a function that allows an LTE to switch to a
backup (or protection) channel in case errors or failures occur on the working channel.
APS commands can be configured for either Linear- or Ring-based SONET and SDH
networks and are transmitted using the K1 and K2 bytes of the Line Overhead.
You can test your network's APS response by generating a condition that is likely to
cause APS switching. You also have the capability to generate specific APS messages
and monitor the response by configuring the K1 and K2 bytes.
You can create up to 16 different K1 and K2 byte configurations (known as byte
sequences) to measure and stress your equipment's APS switching capabilities.
To configure K1 and K2 byte values:
1. Select a protocol processor mode.
2. Select the Transmit button.
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.
Packet tab to configure and test the 10G WAN mapping and Streams
).
screen appears. It contains functions used to
SDH Tab
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