VeEX MPA User Manual page 422

MPA_e_manual_D07-00-129P_RevA00
(1011) SD-R
(1100) SF-S
(1101) FS-R
(1110) FS-S
(1111) LP-S
K1 Bits 5-8 (Ring Mode)
This function edits the last four bits of the K1 byte. When APS commands are
configured for Ring mode, these bits contain the Destination Code Identification.
The following options are available:
Options
Null (#0)
#1
#2
#3
#4
is the Transmit Default button setting.
Signal degrade (Ring), Bit pattern (1011)
Signal fail (Span), Bit pattern (1100)
Forced switch (Ring), Bit pattern (1101)
Forced switch (Span), Bit pattern (1110)
Lockout of protection (Span), 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
Channel 3 requests switch action, Bit pattern
0011
Channel 4 requests switch action, Bit pattern
0100
SDH Tab
422