1
If your desk phone has a volume control set it to middle level-volume.
2
On the bottom of the switcher, ensure the configuration slide switch is set to "A", the listening
volume dial is set to 3 and the speaking volume is set to "2".
1
Remove the handset from the desk phone cradle (or if you connected your MDA220 product to the
headset connection on the bottom of the phone, press the headset button on your phone).
2
While wearing your headset, press the desk phone talk button on the MDA220.
3
If you do not hear a dial tone adjust the configuration switch to each successive position starting
with A and ending at G, until you do.
4
Dial a test call from the desk phone. Make sure that the person on the other end can clearly hear
you. In some cases the other end will experience extreme momentary or permanent echo, in this
case, you have an incorrect setting. Repeat steps 5 and 6 starting with the next candidate switch
position where a dial tone is heard.
5
If needed, adjust the listening volume dial if the other person is too loud or distorted. Ask the
person on the other end to speak at different volume levels.
6
If needed, adjust the speaking volume dial, while speaking at loud and medium volume levels, ask
the person on the other end if the sound is reasonably free from distortion.
7
End call by pressing the headset call button and returning the handset to the desk phone cradle (or
pressing the headset button on your phone if connected to a headset specific jack).
NOTE
If you will be installing the HL10 lifter and power supply, continue below. If not continue with
Computer: Connect and Call.
Check Configuration and
Make a Test Call
9
