AT&T SYSTEM 25 Manual page 126

The attendant uses the Camp-On feature to extend a trunk call to a busy voice terminal and
allow it to wait ("camp-on") there. When the attendant camps-on a call, the called-party is
notified by a burst of tone heard through the handset: one short tone for an inside call, two
short tones for an outside call. The caller is placed on hold (and hears music-on-hold, if
available). Only one call at a time can be camped-on to a voice terminal.
A "camped-on" call interacts the same as any other waiting call with one exception: Calls
"camped-on" by the attendant are given priority over other waiting calls when that station
becomes available to take a call from the queue.
If a camped-on call is not answered within a specified (administrable) time, the call returns to
the attendant. On a DTAC, the call returns to the RTN-BUSY button. On a SLAC, the call
returns to a LOOP button. A camped-on call does not hunt or receive coverage. However,
the attendant can extend or camp-on a returned call again.
The attendant can camp-on calls to DGC groups. DGC members do not receive a burst of
tone when a call is camped on.
For more information, see the entries for "Call Waiting" on page 3-7 and "Return Coverage
on Busy" on page 3-45.
Camping-On a Call
1
Press
2
Listen for confirmation tone and dial tone.
Hang up.
3
C a m p - O n
to camp-on a call at a busy terminal.
[RELEASE]
Camp-On 3-9