Using A Full Duplex Speakerphone - Comdial DSU Series User Manual

Introducing The Telephone
1.1.1 Using A Full-Duplex Speakerphone
The Impact SCS 8324F-** speakerphone uses the latest full-duplex
speakerphone technology. (Full-duplex technology enables both parties
on a speakerphone call to speak simultaneously—half duplex
speakerphones allow only one person to speak at a time.) The 8324F-**
will operate in either full-duplex or half-duplex mode depending on the
current line conditions. For example, satellite calls or calls with a delay
involved may prevent the telephone from operating in full-duplex mode.
At the beginning of each call, the speakerphone must perform a "speech
training" test to achieve optimum full-duplex performance.
To perform a speech training test,
1. Make a call on your 8324F-** full-duplex speakerphone using
the speaker mode.
2. Speak about ten consecutive words to the called party and
listen for his or her reply of about equal length. At this time,
your speakerphone will be operating in half-duplex.
3. If the called party is also using a full-duplex speakerphone, the
speech training test is complete and you will be able to carry
on a normal conversation in full duplex; that is, you and the
called party will be able to interrupt one another any time
during the conversation. However, if the called party's
telephone is a half-duplex speakerphone, his or her telephone
is the controlling factor, preventing your speakerphone from
operating in the full-duplex mode.
NOTE: Pressing any button (mute, hold, etc.) on the speakerphone
while in full-duplex mode causes the system to perform the
"speech training" test again. For example, if you press MUTE
while in full-duplex mode, when you release the call from
mute, the system will perform the entire "speech training" test
again.
1 – 2 LCD Speakerphone Station User's Guide
GCA70–281