Panasonic KX-TD500 System Reference Manual page 646

3.00 External Feature Access
Description
Sending a flash signal through the CO line allows
the extension user to gain access to the features
offered by the host PBX, or to receive CENTREX
service provided by the central office, such as
Call Waiting and so on.
External Feature Access such as Call Waiting is
effective only in 1:1 conversation with an outside
party.
Programming
System Programming
"System-Numbering Plan (3/11)",
External Feature Access
"Group-Trunk Group (1/3)",
Hook Switch Flash Time
"Group-Trunk Group (2/3)",
Max. Dial No. after EFA Signal
Conditions
External Feature Access is ineffective when
"Group-Trunk Group", Hook Switch Flash Time is
assigned to "None".
The maximum dialing digits to be sent to the CO
line after sending the flash signal are restricted
by "Group-Trunk Group", Max. Dial No. after EFA
Signal.
The longest time limit among the following
assignments determines the time limit between
dialing digits.
• "System-System Timer", External First Digit
Time-Out.
• "System-System Timer", External Interdigit
Time-Out.
• "System-System Timer", Toll Restriction
Guard Time-Out.
Reference
VT Dumb
10-D-6.03 11-C-11.00
10-E-1.01
11-C-15.00
10-E-1.02 11-C-16.00
5-E-4
Operation
Gaining access to a feature (in this case, Call
Waiting)
When a call arrives from another outside party
while in conversation with an outside party,
• You hear call waiting tone.
1. Press the hookswitch for
approximately one half second
and release it.
• You hear dial tone 1, 3, or 4.
2. Dial the feature number for
"External Feature Access"
(Default : 61).
• The first party is held. Start
conversation with the second
party.
Finishing the conversation with the second party
and starting the conversation with the first party
again
1. Press the hookswitch for
approximately one half second
and release it.
• You hear dial tone 1, 3, or 4.
2. Dial the feature number for
"External Feature Access"
(Default : 61).
• Start conversation with the first
party.