HP 8920A - Page 197

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Chapter 6, Call Processing Subsystem
CALL BIT Screen
• NAMPS Forward Voice Channel Messages.
• EXT PROT - Extended Protocol mobile station control message
• NCH ASN - Extended Protocol Narrow Channel Assignment Message
• NMS FVC - Narrow Channel mobile station control message
• WNHO MES - Word 1- Narrow Channel Wide to Narrow Handoff Message
• NHO MES - Narrow Handoff Message
[] Access
When lit, the Access annunciator indicates that the Test Set is signaling the
mobile station with command information on the forward voice channel. This is a
transitory state.
The Test Set’s speaker is turned off when in the access state. This is done to
eliminate any possible audio feedback which may occur if the mobile station’s
microphone is open.
Active
This field is used to turn on the forward control channel of the Test Set or to force
a return to the active state from any other state (register, page, access, connect). If
the forward control channel of the Test Set is already active, selecting this field
will deactivate and then reactivate the control channel.
[] Active
When lit, the Active annunciator indicates that the control channel of the Test
Set is turned on. If this annunciator is lit the base station is transmitting system
parameter overhead messages on the assigned control channel. If the annunciator
is not lit the base station is not active (note that the Test Set may still be outputting
a modulated RF carrier but the Test Set’s firmware is not active and no
communication can occur between a mobile station and the Test Set).
[] Connect
When lit, the Connect annunciator indicates that the mobile station is connected
to the Test Set on a voice channel.