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41-001343-02 REV04 – 05.2014 5-35
Audio Hi-Q on G.722 Calls
The Aastra IP phones support the Hi-Q (high quality) audio technology which delivers enhanced performance and voice
clarity for Aastra’s 6700i series of SIP phones. Incorporating wideband audio technology, Aastra Hi-Q significantly
improves the audio quality of calls. This technology provides a more lifelike conversation when the G.722 wideband
Codec is used. The phones with 8 and 11-line LCD screens display a large icon when Hi-Q is being used on the call. On 3-
line LCD screens, the text of “Hi-Q” displays on the same line as the call timer.
Wideband Audio Equalizer
Different wideband audio equalizer settings are available for the speakerphone and handset audio paths on the 6739i
model IP phones. In addition to the default setting, three additional equalizer settings for both audio paths are available to
choose from.
Users can select and save their preferred setting for each individual audio path by using the IP phone’s UI. Administrators
have the additional option of configuring the equalizer settings by defining the “handset rx wb equ filter” and “speaker
rx wb equ filter” parameters in the configuration files.
Configuring Wideband Audio Equalizer Settings Using the IP Phone UI
Use the following procedure to configure the wideband audio equalizer settings using the IP phone’s UI.
Configuring Wideband Audio Equalizer Settings Using the Configuration Files
Use the following parameters to configure the wideband audio equalizer settings using the configuration files.
Note:
Applicable to the 6739i IP Phone only.
Note:
Only the default equalizer settings (i.e. Setting1) for each audio path on the IP phones meet TIA-920 and Aastra Hi-Q™
standards.
IP Phone UI
1.
Press on the phone to enter the Options List.
2. Press the <Audio> button.
3. Navigate to the second page and press the <WBand RX Filters> key.
4. Press the settings button next to the audio path (i.e. Speaker or Handset) you would like to make changes to.
5. Press the wideband audio equalizer setting you want to apply for the audio path. The default settings for the respective audio paths are Spkr
Setting1 and HS Setting1.
6.
Press the to return to the previous menu or press the to return to the idle screen.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the section, “Wideband Audio Equalizer Settings” on pageA-57.