Three-Way Calling
To initiate three-way calling, press the
button while
a call is in progress, and make a second phone call, as
described under “Making a Second Call While Current
Call is in Progress”. After the second call has established,
press and hold the 
button until you
hear a double
beep, indicating that the two calls have been joined into
one conference call.
See also:
Important Notes For Single Video Screen System
• VES™ is able to transmit two channels of stereo audio
simultaneously.
• In split screen mode the left side equates to Channel 1
and right side equates to Channel 2.
• If a video source ...
In Mexico Contact
Av. Prolongacion Paseo de la Reforma, 1240
Sante Fe C.P. 05109
Mexico, D. F.
In Mexico City: 5081-7568
Outside Mexico City: 1-800-505-1300 ...
Programming Additional Transmitters
Refer to Sentry Key “Customer Key Programming.”
If you do not have a programmed RKE transmitter,
contact your authorized dealer for details. ...