How to use the Digital Audio Interface Features

Last updated: January 15, 2009

This section is only applicable to the lab applications.

This section describes general procedures for performing the Digital Audio Interface (DAI) Test from the test set's front panel.

How to use the Digital Audio Interface (DAI) Downlink Test

Connect the mobile station to the test set and power it on.
The customer Test Station (TS) uploads the digital audio file (COD reference file) to the test set via HTTP interface.
Start a voice call between the test set and the DUT.
Wait for more than 1 second, use the TS to apply a reset pulse to the Mobile Station
TS starts recording the digital audio file (OUT file) output from the Mobile Station.
Command the test set to start playing the digital audio file (COD reference file).
1. Press Call Setup
2. Press the More key until screen 5 of 5 of the Call Control menu is displayed
3. Press Digital Audio Interface ( F2 ), The following screen displayed
4. Press Start COD Play ( F1 )
Wait until the Play Progress reach 100% .
TS stops the DUT recording and processes the results.
End the Call.

Connect the mobile station to the test set and power it on.
Start a voice call between the test set and the DUT.
Wait for more than 1 second, then use the TS to apply a reset pulse to the Mobile Station
Command the test set to start recording the digital audio file.
1. Press Call Setup
2. Press the More key until screen 5 of 5 of the Call Control menu is displayed
3. Press Digital Audio Interface ( F2 ), The following screen displayed
4. Press Start COD Record ( F2 ), notice that the softkey changes to Stop COD Record after the softkey is press.
TS sends the digital audio file (INP file) to the Mobile Station.
Stop the digital audio file (COD file) recording.
TS downloads the digital audio file (COD file) from the test set via HTTP interface.
End the Call Connection.