Typical Example - HP 8920A User Manual

Typical Example

The following example illustrates the use of the CALL BIT screen. In this
example an AMPS mobile station is brought up on a voice channel and then
handed off to a new voice channel assignment. The contents of the
message, which was set when the first handoff occurred, is then modified from the
CALL BIT screen. The mobile station is then handed off again by sending the
modified message to the mobile station from the CALL BIT screen.
1. Ensure that the Test Set is in the connected state.
page 145 for information on how to bring a mobile station up on a voice channel.
2. If the CALL CONTROL screen is not displayed, select CALL CNTL under the To
Screen menu. The CALL CONTROL screen will be displayed.
3. Position the cursor on the Display field and select Data.
4. Select the Chan: field and enter a new, valid voice channel number.
5. Select the Pwr Lvl: field enter a new, valid mobile station power level.
6. Select the SAT: field and enter a new, valid SAT frequency.
7. Select the Handoff field. The Access annunciator will light while the Test Set
signals the mobile station with the handoff information. If the mobile responds
properly, it will stop transmitting on the current voice channel, switch to the new voice
channel assignment, and transpond the new SAT frequency assignment. When the Test
Set detects that this has happened the Connect annunciator is lit indicating that the
handoff was successful. The left-hand fields in the Voice Channel Assignment
section will be updated with the new voice channel assignment information.
8. Select CALL BIT from the To Screen menu. The CALL BIT screen will be
displayed.
9. Position the cursor on the Data Spec field and select Bits.
10. Select the Set Message field and select FVC V Msg.
11. Select the VMAC field in the FVC V Msg and set it to 101 (this corresponds to a mobile
station power level of 5 - reference EIA/TIA-553 Mobile Station - Land Station
Compatibility Specification, September 1989, page 2-2, Table 2.1.2-1).
12. Select the Handoff field. The Access annunciator will light while the Test Set
signals the mobile station with the handoff information. If the mobile responds
properly, it will stop transmitting on the current voice channel, and start transmitting on
the same channel with a power level of 5 (note that the channel assignment and SAT
assignment were not modified in this example, the mobile station simply switched to
the same channel with the same SAT assignment). When the Test Set detects that this
has happened, the Connect annunciator is lit indicating that the handoff was
successful. The mobile station power level after the handoff should be power level 5.
13. Position the cursor on the Data Spec field and select Std.
Chapter 6, Call Processing Subsystem
Using the CALL BIT Screen
FVC V Msg
See "Page a Mobile Station" on
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