HP 8921A - Page 178

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Chapter 6, Call Processing Subsystem
CALL BIT Screen Message Field Descriptions
RSVD2
Reserved for future use, all bits must be set as indicated.
F3
Control filler message field 3. All bits must be set as indicated.
WFOM
Wait-for-overhead-message field.
F4
Control filler message field 4. All bits must be set as indicated.
OHD
This field displays the overhead message type.
• A ‘100’ indicates a global action message.
• A ‘110’ indicates this is the first word of the system parameter overhead parameter
message.
• A ‘111’ indicates this is the second word of the system parameter overhead message.
Parity
Parity field. The contents of the Parity field cannot be set by the user. The Test Set
calculates the parity bits.