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CTS 710 SONET Test Set User Manual
3–161
Testing Automatic Protection Switching
This section describes how to generate Automatic Protection
Switching (APS) commands and view the network response.
APS commands are located in the K1 and K2 bytes of the transport
overhead. The K1 byte indicates a request for switch action. The K2
byte provides additional information about network architecture and
alarm conditions.
Setting the APS Mode
The APS mode specifies whether the network is a ring network or a
span network. The APS mode determines how the K1 and K2 bytes
are interpreted and displayed by the CTS 710.
To specify the APS mode:
Press Menu
Button
Select Menu
Page
Highlight
Parameter
Select Choice
TRANSMIT APS
COMMANDS
(see Figure 3–55)
APS Mode Span
Ring
CTS 710 SONET Test Set User Manual
3–161
Testing Automatic Protection Switching
This section describes how to generate Automatic Protection
Switching (APS) commands and view the network response.
APS commands are located in the K1 and K2 bytes of the transport
overhead. The K1 byte indicates a request for switch action. The K2
byte provides additional information about network architecture and
alarm conditions.
Setting the APS Mode
The APS mode specifies whether the network is a ring network or a
span network. The APS mode determines how the K1 and K2 bytes
are interpreted and displayed by the CTS 710.
To specify the APS mode:
Press Menu
Button
Select Menu
Page
Highlight
Parameter
Select Choice
TRANSMIT APS
COMMANDS
(see Figure 3–55)
APS Mode Span
Ring