Polycom 400 - Manual (Page 104)

Polycom Telephone User Guide Set Up Outlook for TAPI 97
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4. Click Call Contact on the menu (circled in the previous screen)
to open the New Call dialog box.
5. Click Start Call to dial the telephone number displayed in the
Number field.
NOTE: You cannot call four-digit extensions from Outlook. A
complete 7- or 10-digit phone number must be used.
TIP: Always check to be sure you have the correct number
selected before starting a call. If you have multiple phone
numbers entered for the person you are calling, you must use
the drop-down list to select the number to call.
6. The speaker on your telephone should be activated and you
should hear ringing or a busy signal as the call is connected to
the dialed number.
7. If the person you called answers, carry-on the conversation in
the usual manner.
NOTE: Do NOT click the Close button or icon in the New Call
dialog box while carrying on a conversation on the
speakerphone (if available on your phone). Closing the New
Call dialog box while using the speakerphone will end the call
immediately. Minimize the New Call dialog box or, if you need
to close the dialog box, pick up the handset. Picking up the
handset moves control of the call to the physical phone from
the computer under Outlook and TAPI.