EXFO FTB/IQS-85100G Packet Blazer for FTB-500/IQS-600 - Manual (Page 293)

Test Functions
Packet Blazer 283
OH - GFP-F/GFP-T
RX
Note: The following Core Header, Type Header, and Extension Header
parameters are available for Client Data, Client Management, and
Reserved PTI frames. The details of the selected OH field is displayed in the
OH Details section on the bottom-right of the screen.

Core Header

PLI (Payload Length Indicator) indicates the number of octets in
the GFP payload area.

cHEC (Core Header Error Control) indicates the CRC-16 error
control code that protects the integrity of the contents of the core
header by enabling both single-bit error correction and Multi-bit
error detection.

Type Header: See Type Header on page 280 for PTI, PFI, EXI, and UPI
possible values.

PTI (Payload Type Identifier) indicates the type of GFP client frame.

PFI (Payload Frame Check Sequence Indicator) displays the
Payload FCS Indicator.

EXI (Extension Header Identifier) indicates the Extension Header
Identifier.

UPI (User Payload Identifier) indicates the User Payload Identifier.

tHEC (Type Header Error Control) indicates the CRC-16 error
control code that protects the integrity of the contents of the type
field by enabling both single-bit error correction and multi-bit error
detection.