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Testing Automatic Protection Switching
3–164
CTS 710 SONET Test Set User Manual
Table 3–16: Choices for Bits 1–4 of the K1 Byte When Mode is Set to
Ring (Cont.)
Main Screen
Mnemonic
Bit PatternChoice Text
SF–S SF–S Signal Fail Span 1100
FS–R FS–R Forced Switch Ring 1101
FS–S FS–S Forced Switch Span 1110
LP–S LP–S Lockout of Protection Span 1111
Table 3–17: Choices for Bits 1–4 of the K1 Byte When Mode is Set to
Span
Main Screen
Mnemonic
Choice Text Bit Pattern
NR NR No Request 0000
DNR DNR Do Not Revert 0001
RR RR Reverse Request 0010
Not Used Not Used 0011
EXER EXER Exerciser 0100
Not Used Not Used 0101
WTR WTR Wait to Restore 0110
Not Used Not Used 0111
MS MS Manual Switch 1000
Not Used Not Used 1001
SD–LP SD Signal Degrade Low 1010
SD–HP SD Signal Degrade High 1011
SF–LP SF Signal Fail Low 1100
Testing Automatic Protection Switching
3–164
CTS 710 SONET Test Set User Manual
Table 3–16: Choices for Bits 1–4 of the K1 Byte When Mode is Set to
Ring (Cont.)
Main Screen
Mnemonic
Bit PatternChoice Text
SF–S SF–S Signal Fail Span 1100
FS–R FS–R Forced Switch Ring 1101
FS–S FS–S Forced Switch Span 1110
LP–S LP–S Lockout of Protection Span 1111
Table 3–17: Choices for Bits 1–4 of the K1 Byte When Mode is Set to
Span
Main Screen
Mnemonic
Choice Text Bit Pattern
NR NR No Request 0000
DNR DNR Do Not Revert 0001
RR RR Reverse Request 0010
Not Used Not Used 0011
EXER EXER Exerciser 0100
Not Used Not Used 0101
WTR WTR Wait to Restore 0110
Not Used Not Used 0111
MS MS Manual Switch 1000
Not Used Not Used 1001
SD–LP SD Signal Degrade Low 1010
SD–HP SD Signal Degrade High 1011
SF–LP SF Signal Fail Low 1100