Panasonic KX-TD500 System Reference Manual page 455

Operation
(CAI=No)
1. Lift the handset or press the SP-
PHONE button.
• You hear dial tone 1, 2, or 4.
• The indicator on the PDN
button lights green.
2. Dial the specified CO line or
press the CO button (PCO, SCO,
GCO).
• Even when a CO line is not
available, you will hear a dial
tone.
3. Dial the telephone number.
• After dialing all of the numbers
and a line is not available, you
will hear the busy tone 3.
4. Replace the handset or press the
SP-PHONE button.
• If your PITS has an LCD,
it will show:
5. When a CO line becomes idle,
you will hear the callback ring.
6. Lift the handset or press the SP-
PHONE button.
• The last number dialed is
dialed automatically.
Trunk Queuing
(CAI=Yes : Default)
1. Lift the handset or press the SP-
PHONE button.
• You hear dial tone 1, 2, or 4.
• The indicator on the PDN
2. Dial the specified CO line or
press the CO button (PCO, SCO,
GCO).
• When a CO line is not
3. Replace the handset or press the
SP-PHONE button.
• If your PITS has a LCD,
4. When a CO line becomes idle,
you will hear the callback ring.
5. Lift the handset or press the SP-
PHONE button.
• You hear a dial tone. You have
4-C-21
button lights green.
available, you will hear dial
tone 3.
it will show:
Trunk Queuing
to dial the desired number
again.