BASIC OPERATION

Slow Flash

Lamp will slowly flash when you have new Telco voice messages (subscription required.)

Fast Flash

Lamp will flash quickly when the speakerphone is ringing.

On steady

Lamp will light steady when the speakerphone is in the Do Not Dis- turb mode.

Off

Lamp is off if there are no new mes- sages and the Do Not Disturb mode is off.

2. Line-In-Use Indication

If a single line telephone or other equip- ment such as a facsimile machine is using a line, that line lamp will light on your telephone to indicate that the line is busy. You may intrude on that busy line to verify that the line is not out of order. However, lines being used solely by VT 4121 speakerphone are privacy protected form intrusion.

3.Adjusting the Handset Volume Level

While using the handset, you may ad- just the volume level of the distant party’s voice by pressing VOLUME

. You will hear a confirmation tone when the highest or lowest volume set-

ting is reached.

4.Adjusting the Speaker Volume Level

While using the speakerphone, you may adjust the volume level of the distant party’s voice by pressing VOLUME

. You will hear a confirmation tone when the highest or lowest volume set-

ting is reached.

5.Adjusting the Headset Volume Level

While using a headset, you may adjust the volume level of the distant party’s

voice by pressing VOLUME . You will hear a confirmation tone when the highest or lowest volume setting is reached.

6.Adjusting the Ringer Volume Level

While the telephone is idle (not being used), you may adjust the ringer vol-

ume level by pressing VOLUME . You will hear a confirmation tone when the highest or lowest volume setting is reached.

7. AC Power Failure Indication

If power has been interrupted to your speakerphone the display will show:

Press any button or key to cancel the power failure message.

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VTech VT 4121 manual Line-In-Use Indication, Adjusting the Handset Volume Level, Adjusting the Speaker Volume Level