Increasing And Decreasing The Volume; Muting And Un-Muting The Microphones; Redialing The Last Number - Black Box AC910A User Manual

You cannot drop the second party's line and continue talking to the third
party; you must ask the second party to hang up. (This is a limitation of the
worldwide phone system, not of the VCS.) Once the second party hangs up,
the third party becomes the second party, and you can add a new third party
to the line if you wish.
The phone system is also limited in that it only supports two phone lines on
a normal RJ-11 wall jack, so you cannot dial a third number to add a fourth
party to the call. If either of the other parties is on a conference phone, they
can call and add the fourth party. Be aware, however, that the VCS might not
be able to get consistent sound quality from any line carrying signals from
multiple sites.

4.3 Increasing and Decreasing the Volume

To raise the volume one decibel, press the VOL + key. To lower the
volume one decibel, press the VOL – key. Each time the level
changes, the LEDs will flash momentarily to show that the level is
changing. When the VCS hits its top volume of above 90 decibels, or
its bottom volume of below 50 decibels, its LEDs will stop flashing,
indicating that it can go no farther.

4.4 Muting and Un-muting the Microphones

To mute the microphones for privacy, so that people can talk on
your end of the call and not be heard on the other end of the call,
press the MUTE key. The LEDs will flash red and the microphones
will be turned off.
To un-mute the microphones, press the MUTE key again. The LEDs will
stop flashing red and will resume shining solid green, and the microphones
will be turned back on.

4.5 Redialing the Last Number

To rcdial the last number dialed, simply press the REDIAL key.
CHAPTER 4: Operation
VOL
+
VOL
_
MUTE
RE-
DIAL
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