Automatic Release - NEC Xen IPK Features & Specifications Manual

Automatic Release

FEATURE
DESCRIPTION
SYSTEM
AVAILABILITY
OPERATING
PROCEDURES
SERVICE
CONDITIONS
Features and Specifications Manual
The Automatic Release feature releases the outside line circuit when an
outside party has abandoned the call. For this feature to work with Loop
Start Trunks, the CO/PBX providing the outside line must provide a line
reversal signal or busy tone upon disconnect. Automatic release is also
normally provided on DID, ISDN, and Tie Line Trunks.
Terminal Type
Not applicable.
Required Components
COI( )-U( ) ETU DID(4)-U( ) ETU
COID( )-U( ) ETU TLI(2)-U( ) ETU
BRT(4)-U( ) ETU
PRT(1)-U( ) ETU
Not applicable.
General
Loop Start, DID and TIE Line Trunks provide this feature if the outside
exchange generates a line reversal signal to indicate the distant party
has abandoned the call. Automatic Release on ISDN trunks is
provided as part of the protocol.
New Zealand loop start trunks do not provide automatic release by
way of a line reversal signal.
If an outside line has been accessed via a dedicated line key, the LED
associated with the line key goes off when Automatic Release occurs.
This feature functions while a call is in progress, on hold, or
conferenced.
The presence of a Busy Tone (Disconnect Tone in NZ) on the line, may
also be used to automatically release the circuit when the outside
party has abandoned the call.
Automatic Release can be turned on or off via system programming.
A-26
A26 – 107