Vertical Communications DSU II - Manual (Page 23)

· To camp on when you hear a busy signal,
1. MAKE intercom call AND HEAR busy signal.
2. DIAL
*01
.
3. Remain on line awaiting a reply.
4. The called party will hear a short tone burst. They can either
place their current call on hold or hang it up and then answer your
call.
Single Line Proprietary Telephone Station User’s Guide 17
GCA70-246 Making Calls
1 2 3 4 5 6 7 8 9 0 * #
Your
Station
Idle
Station
HOLD SHIFT
TAP
1
4
7
2
5
8
0
3 6
9 # OPER
PRS
GHI
TUV
JKL
ABC
WXY MNO
DEF
HOLD SHIFT
TAP
1
4
7
2 5
8
0
3
6
9 # OPER
PRS
GHI
TUV
JKL
ABC
WXY
MNO
DEF Busy
Station
To Wait For
Callback...
...Dial 6
and Disconnect
S
To Send Call
Waiting Tone...
...Dial 01 and
Wait For Reply
S
To Wait For
Callback...
...Dial 6
and Disconnect
S
When idle,
your call
is connected.
Busy station
hears tone
and may respond
or ignore.
When any activity
occurs at station,
your call is
connected.
BUSY
NO ANSWER
Camping On Options