VeEX MPA User Manual page 296

MPA_e_manual_D07-00-129P_RevA00
(0110) WTR
(0111) Unused
(1000) MS
(1001) Unused
(1010) SD-LP
(1011) SD-HP
(1100) SF-LP
(1101) SF-HP
(1110) FS
(1111) LP
K1 Bits 5-8 (Linear Mode)
This function edits the last four bits of the K1 byte. When APS commands are
configured for Linear mode, these bits indicate the channel number. For example, Code
0 is the Null Channel, Codes 1-14 are the working channels, and Code 15 is an extra
traffic channel.
The following options are available:
Options
Null (#0)
#1
#2
Wait to restore, Bit pattern (0110)
Not used, Bit pattern (0111)
Manual switch, Bit Pattern 1000
Not used, Bit pattern (1001)
Signal degrade low priority, Bit pattern (1010)
Signal degrade high priority, Bit pattern (1011)
Signal fail low priority, Bit pattern (1100)
Signal fail high priority, Bit pattern (1101)
Forced switch, Bit pattern (1110)
Lockout of protection, Bit pattern (1111). This is
also the Transmit Illegal button setting.
Description
Protection channel requesting switch action.
The protection channel is supplied with a signal
containing valid Transport Overhead for
carriage of the APS bytes and BIP-8, Bit
pattern 0000.
Channel 1 requests switch action, Bit pattern
0001
Channel 2 requests switch action, Bit pattern
0010
SONET Tab
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