ESI U46DJ User Manual download pdf (Page 13)

ROMES Server Setup

1SP52_1E.doc Rohde & Schwarz Voice Quality Measurements with R&S ROMES

6 ROMES Server Setup

Preparation for an answering machine

With an digital answering machine you will only be able to measure the downlink.

Configure the answering machine so that it will accept the incoming call immediately.

Prepare the wave file: With an audio editing software such as “Audacity” the wave file

should repeat the sample file many times (60 times for example).

At the beginning of the wave file you should add a silence of at least 2500 ms. Use the

unchanged sample file on the client PC

Preparation for an SQA server

The ROMES Speech Quality Analyser Server allows Speech Quality Tests for the

downlink and uplink. This option offers a real end-to-end test solution.

In outgoing wave mode, the server plays sound files to a calling device. In incoming wave

mode the server measures speech quality of sound coming from a calling device using the

PESQ algorithm. The measurement results are stored in CMD files which can later be

merged into a destination CMD file by the ROMES application.

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ESI U46DJ User Manual Page 13