AT&T CL82659 - Manual (Page 31)

Multiple handset use
26
Intercom
Answer an incoming call during an intercom call
If you receive an incoming outside call during an intercom call, there is an
alert tone.
• To answer the call, press PHONE
/FLASH
. The intercom call ends
automatically.
• To end the intercom call without canceling the incoming call, press
OFF/
CLEAR
.