- American Telephone & Telegraph User Manual 5.8 GHz expansion handset E5901, E5902B, E5903B. E5911, E5912B, E5913B, E5914B. E5921, E5922B,E5923B, E5924B, E6001,E6002B, E6012B,E6013B, E6014B, E3813B

11
Telephone operation
Options while on calls
Multiple handset use
While on a call, a person on the
ringing destination handset can press
PHONE/FLASH or SPEAKER to join
the conversation.
The person on either handset can press
OFF/CLEAR, or place the handset in
the telephone base or charger to drop
out of the call, but the call will not be
terminated until all handsets hang up.
NOTE: A maximum of two handsets can be
used on an outside call, and the other two
handsets can be used on an intercom call.