EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 433)

Test Functions
Power Blazer 421
APS
Architecture (Linear switching mode) or
Bridge Request (Ring switching mode):
Bit 5 of the K2 byte. The default setting is 1+1 for Linear switching
mode and Short Path Request for Ring switching mode.
Operation Mode: Bits 6 through 8 of the K2 byte.
Bit 5
Architecture
(Linear mode)
Bridge Request
(Ring mode)
0 1+1 a
a. Default value.
Short Path a
1 1:n Long Path
Bits 6 to 8 Linear mode Ring mode
000 Reserved a
a. Default value.
Idle a
001 Reserved Bridged
010 Reserved Bridged and Switched
011 Reserved Extra Traffic - Protection
100 Unidirectional Reserved
101 Bidirectional Reserved
110 RDI-L b /MS-RDI c
b. Operation mode for SONET.
c. Operation mode for SDH.
RDI-L b /MS-RDI c
111 AIS-L b /MS-AIS c AIS-L b /MS-AIS c