§ 0001 to 1110 Channels 1 thru 14
§ 1111 Extra traffic channel
K2 Byte (APS-Linear)
- Conforms to ITU-T G.783 / Bellcore GR.253
- Used to activate and deactivate the switching between the main and protection paths on a multiplexer section
- Used to communicate Alarm Indication Signal (AIS) and Remote Defect Indication (RDI) conditions
o Bits 1-4 selects bridged channel used
o Bit 5 determines APS architecture
§ 0 1+1
§ 1 1:n
o Bits 6-8
§ 110 RDI-L
§ 111 AIS-L
§ Others Not used
K2 Byte (APS-Ring)
- Conforms to and follows ITU-T G.841 / Bellcore GR.253 recommendations
- Used to activate and deactivate the switching between the main and protection paths on a multiplexer section
- Used to communicate Alarm Indication Signal (AIS) and Remote Defect Indication (RDI) conditions
o Bits 1-4 are the source node ID
o Bit 5 is the path code
§ 0 Short path
§ 1 Long path
o Bits 6-8
§ 000 Idle
§ 001 Bridged
§ 010 Bridged and switched
§ 110 RDI-L
§ 111 AIS-L
§ Others Not used
TX150 e-Manual D07-00-023 Rev A02
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