in countries that use the north american pots standard, you can connect an analog telephone line to the back of the viewstation and add a third-party audio call to a video call.
to add a telephone call to a video call:
1. once your video call is connected, press the call-hang-up button on the remote control.
the call hangup choices screen is displayed (as shown in figure 3-17.)
2. select the add speakerphone icon and press the select button on the remote. the telephone screen is displayed.

3. use the numeric keypad on the remote control to enter the telephone number of the new party. press the select button on the remote control.
4. when the telephone connects, press either the near or far button on the remote control to return to the video call.
5. if you have enabled three-way calling from your local telephone company, you can obtain another line and add another telephone call to your video call. select the flash icon on the telephone screen and press the select button on the remote.
enter the telephone number of the second person you are calling and press the select button on the remote control.
6. to disconnect from the telephone call, press the call-hang-up button on the remote control.
on the call hangup choices screen, select the disconnect speakerphone icon and press the select button on the remote control.