VeEX RXT-6000e, User Manual

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G1 byte (Path status)
High Order path status byte
Used to convey the path terminating status back to the originating path, thus allowing bidirectional
monitoring of the complete path
Bits 1-4: Remote Error Indication (HP-REI) indicates number of bit errors detected by B3
Bit 5: Remote Defect indication (HP-RDI) set to 1 if signal failure is detected
Bits 6-7: Enhanced RDI information to differentiate between payload defects (HP-PLM), connectivity
defects (HP-TIM, HP-UNQ) and server defects (HP-AIS, LOP)
G1 Byte (HP Status)
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F2 byte (HP user channel)
High Order Path user channel
VC-4 path user channel used for communication between path elements
H4 byte (TU Indicator)
Position or Sequence Indicator
Multiframe phase indicator used for tributary structured payloads
F3 byte (LP) user channel
Used for communication between path elements and is payload dependent.
K3 byte (HP APS)
Bits 1-4 are used for protection switching of VC-3 & 4 paths.
Bits 5-8 are a currently not used
N1 byte (HP)
Allocated to provide a High Order (HP) Tandem Connection monitoring function for contiguously
concatenated VC-4, VC-4 and VC-3 levels.
Bits 1-4: Used as an Incoming Error Count (IEC) per G.707
Bit 5: Operates as the TC-REI to indicate errored blocks occurring within the tandem connection
Bit 6: Operates as the OEI to indicate errored blocks egressing the VC-n
Bits 7-8: Operate in 76 multi-frame structure;
Frames 1-8 > Frame Alignment Signal (FAS)
Frames 9-72 > The Access Point Identifier of the tandem connection (TC-API)
Frames 73-76 > TC-RDI indicating defects that have occurred in the tandem connection to the far-
RXT-6200_RXT6000e_Module_Manual Page 129 of 387