After you activate DTMF camera control, which of the following keys should you press to zoom the camera in
and out during a conference on Cisco Jabber Video for TelePresence?

A.
+ and –

B.
1 and 7

C.
2 and 8

D.
4 and 6

E.
the up and down arrow keys

F.
the left and right arrow keys

Explanation:
You should press the 1 and 7 keys to zoom the camera in and out by using dual-tone multi-frequency (DTMF)
camera control during a conference on Cisco Jabber Video for TelePresence. To begin using DTMF on Cisco
Jabber Video for TelePresence, click the keypad icon on the video info bar. Then, to adjust the remote camera,
press 1 or 7 to enable DTMF camera control and press any of the following keys:
4 to pan left
6 to pan right
2 to tilt down
8 to tilt up
1 to zoom in
7 to zoom out
You can also adjust the layout by using DTMF. To change the layout, press 2 or 8. To change which participant
appears in the largest pane, press 4 or 6.
Alternatively, you can use far-end camera control (FECC) to control the remote camera. To adjust the remote
camera by using FECC, click the FECC icon in the upper right corner. Then click the appropriate screen button
or keyboard key to cause the remote camera to pan, tilt, zoom in, or zoom out. On the keyboard, the arrow keys
are used to move the camera left, right, up, or down; the + and – keys are used to zoom the camera in or out,
respectively.

Cisco: Cisco Jabber Video for TelePresence 4.6 User Guide for Mac OS X: Using the info bar