Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 137
3.2.15.6.3 Request Switch of Active to Working
The request or manual switch of active to working command (tools>perform>aps>
request) switches the active line back from the protection line to the working line (by
issuing a manual switch request) unless a request of equal or higher priority is
already in effect. If the active line is already on the working line, no action takes place.
Refer to the 7705 SAR OAM and Diagnostics Guide, “Tools”, for information on the
APS request command.
3.2.15.6.4 Forced Switch of Working to Protection
The forced switch of working to protection command (tools>perform>aps>force)
switches the active line to the protection line (by issuing a forced switch request)
unless a request of equal or higher priority is already in effect. When the forced
switch of working to protection command is in effect, it may be overridden either by
a lockout of protection command or by detecting a signal fault on the protection line.
If the active line is already on the protection line, no action takes place. Refer to the
7705 SAR OAM and Diagnostics Guide, “Tools”, for information on the APS force
command.
3.2.15.6.5 Forced Switch of Active to Working
The forced switch of active to working command (tools>perform>aps>force)
switches the active line back from the protection line to the working line (by issuing
a forced switch request) unless a request of equal or higher priority is already in
effect. Refer to the 7705 SAR OAM and Diagnostics Guide, “Tools”, for information
on the APS force command.
3.2.15.6.6 Exercise
The exercise command (tools>perform>aps>exercise) is only supported in 1+1
APS bidirectional mode. The Exercise command exercises the protection line by
sending an exercise request over the protection line to the far end and expecting a
reverse request response back. The switch is not completed during the exercise
routine. Refer to the 7705 SAR OAM and Diagnostics Guide, “Tools”, for information
on the APS exercise command.
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