
Installation and Operation Manual Chapter 4 Configuration
Egate-100 Ver. 4.0 Additional Tasks 4-91
Egate-100
Monitoring> System> APS> Total Counter
Status Item Current Status Total
Mode Mismatch No 2
Channel Mismatch No 3
Switch Byte Failure No 0
FE Protection Line Failure No 0
>
ESC-prev.menu; !-main menu; &-exit; ?-help
Figure
4-96. APS Total Counter Status
Table
4-41 APS Total Counter Status Parameters
Parameter Description
Mode Mismatch A conflict between the current local mode and the received K2 mode information
constitutes a mode mismatch. Monitor protection line K2 bit 5 indicates the
architecture, and K2 bits 6–8 indicate the mode (unidirectional or bidirectional).
Channel Mismatch Indicates that a mismatch between the transmitted K1 channel and the received K2
channel has been detected.
Switch Byte Failure Indicates that a protection switch byte failure is in effect. This condition occurs when
either an inconsistent APS byte or an invalid code is detected.
• An inconsistent APS byte occurs when no three consecutive K1 bytes of the last
12 successive frames are identical.
• An invalid code occurs when the incoming K1 byte contains an unused code or a
code irrelevant for the specific switching operation, in three consecutive frames.
An invalid code also occurs when the incoming frame contains an invalid channel
number in three consecutive frames.
FE Protection Line
Failure
Monitor the K1 byte for Far End Protection Failure. A Far End Protection Line defect is
declared based on receiving signal failure on the protection line.
³ To clear APS counters:
1. Navigate to Main Menu> Monitoring > System> APS (or Main Menu>
Monitoring > System> Protection > APS).
The APS status menu appears as illustrated in
Figure
4-94
.
2. Select Clear Counters.
The following confirmation message is displayed:
Clear APS counters. Are you sure? (Y/N)
3. Type Y to clear the APS counters.
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