ECEIVING Making and receiving calls is the basic purpose of any endpoint. With your Model 8520, you can make/receive intercom and outside calls and make emergency calls. Intercom Calls Your extension number allows other people to place intercom calls to you, without dialing any extra codes.
19) override the handsfree option. or lift the handset for privacy. to answer the call. and hang up. When ® Inter-Tel Model 8520 User Guide...
Dial the Automatic Route Selection (ARS) feature code (the default is 92000 but may differ depending on the software version). ® Inter-Tel Model 8520 User Guide to place your endpoint in DND mode, if desired. (See OUTGOING button, if you have one.