HP 8920A - Performing a Unique Challenge on the Voice Channel

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Chapter 6, Call Processing Subsystem
Using the CALL CONTROL Screen to test AMPS Authentication
Performing a Unique Challenge on the Voice Channel
1. Ensure that the Test Set is in the active state. See "Turn on the Test Set’s Control
Channel" on page 154 for information on how to activate the Test Set.
2. Connect the mobile station to the Test Set as shown in Figure 17, "Connecting a
Mobile Station to the Test Set," on page 119.
3. Turn on the mobile station.
4. If the CALL CONTROL screen is not displayed, select CALL CNTL from the To
Screen menu. The CALL CONTROL screen will be displayed.
5. Position the cursor on the Display field and select Data.
6. Ensure that the Test Set has Initialized Call Processing with Authentication. See
"Initialize Call Processing with Authentication" on page 154 for information on
how to register the mobile station and activate Authentication.
7. Ensure that the mobile station is assigned an active voice channel. See "Page a Mobile
Station with Authentication" on page 156.
8. Select AUTHEN from the To Screen menu.The AUTHENTICATION screen will be
displayed.
9. Select the RAND_U field. Enter a new, valid RAND_U value (6-digit hexadecimal).
10. Select CALL CNTL from the To Screen menu. The CALL CONTROL screen will
be displayed.
11. Select Uniq Ch from the VC Order field. The Access annunciator light will light
while the Unique Challenge order is in progress. If the mobile station responds properly
on the reverse control channel, “Unique Challenge Successful” will be
displayed in the upper right-hand portion of the CALL CONTROL screen. If the order
failed, then “Unique Challenge Failed” will appear on the upper right-hand
portion of the CALL CONTROL screen.