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S:\agilent\83217\OPT001\BOOK\CHAPTERS\tdscrip.fm

Test Descriptions

TEST_45 - CPD Digital to Analog Handoff

Description

This test performs a handoff from a CDMA digital traffic channel to an

AMPS analog traffic channel.

1. The analog channel is retrieved from the parameter “CPD Analog

Channel for D/A Handoff”.

2. A Service Option 1 (or 9 if parameter 19. RT Rate Set Selection

[0=9600 1=14400] is set to 1) call is attempted, unless a Service

Option 1 or 9 call is already connected, and the operator is prompted

to answer the call. If the MSUT has not registered, the call attempt

may be unsuccessful and the error message “Failed to establish a call

in test <>” will be displayed. To correct this problem, perform the

CPD Registration test.

NOTE

Service Option 1 is selected for this test because Service Option 2 is not

defined in the AMPS/NAMPS standards. Using Service Option 1 will

allow the MSUT to have analog tests performed once the handoff has

completed.

3. The SAT tone is retrieved from the parameter “CPA SAT Tone” and

converted to SAT code 0-2.

4. A handoff direction message is sent to the MSUT. This test

configures the Test Set as an analog cell site, and provides several

analog measurements, including SAT frequency.

5. A SAT frequency measurement is made to determine if the handoff

was successful.

6. The following information is printed to the TESTS (IBASIC

Controller) screen:

• TXA SAT freq err @ 6000 Hz <Hz>

• D/A Handoff successful: <YES/NO>

Refer to the Agilent 8924C Reference Guide for information about the

Channel, SAT and Pwr Level fields.

NOTE

The analog Call Control screen, which is the primary screen for the

analog Call Processing Subsystem, cannot have its Active field selected

without losing the analog call that is set up during the digital to analog

handoff test. The reason is because this software does not use the

analog call control subsystem to do call processing.

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Carrier 38TXA Guide Guía de usuario Pagina 96