Calling Party Control (Cpc) Signal Detection - Panasonic KX-TD308 Installation Manual

C
C
alling Party Control (CPC) Signal Detection
Description
Conditions
Programming References
Feature References
Operation References
3-38 Features
The Calling Party Control (CPC) Signal is an on-hook indication
(disconnect signal) sent from the outside line when the telephone is
hung up at the other end. To maintain efficient utilization of
outside lines, the system monitors their state and when CPC Signal
is detected from a line, the system disconnects the line and alerts
the extension with a reorder tone.
• CPC Signal Detection is enabled or disabled on incoming and outgoing
outside calls by System Programming.
• Generally CPC Signal Detection works on incoming outside calls, and
does not work on outgoing outside calls (except once they are placed on
Call Hold, Exclusive Call Hold or Consultation Hold). In this case, if
the extension user remains off-hook after the completion of an outgoing
outside call, the system does not release all the switches used to
establish the connection. The connected outside line will continue to be
in use. To prevent this, it is programmable to make CPC Signal
Detection work on outgoing outside calls. (Note: Some Central Offices
may send CPC-like signals during the dialing sequence and an attempt
to make a call may be terminated. If your CO does not send such
signals, it is recommended to make CPC Signal Detection work on
outgoing outside calls.)
• If your Central Office does not send CPC-like signals, it is effective to
limit the dialed numbers during a call by the program [991] "COS
Additional Information"; Class of Service to prevent unauthorized calls.
• If a CPC Signal is detected during a Conference call, the line is
disconnected and the remaining two parties resume the call.
• If a CPC Signal is detected during a call between a caller using the
Direct Inward System Access (DISA) feature and an extension or an
outside party, the line is disconnected.
Section 4, System Programming
[405] CPC Signal Detection Incoming Set
[415] CPC Signal Detection Outgoing Set
[991] COS Additional Information, Field (1)
None
Not applicable.
3 Features