AUTOMATIC WELCOME (PRE-
ANNOUNCEMENT)
CALL SERVER : TELEPHONE FEATURES
Ed. 044/6 Réf. 3EH 21000 BSAA
Tree diagram operational after the system has determined the type of pre-announcement:
(*) sent by the public exchange
(**) The ringing tone or the "please wait" music is heard:
- by a caller on an analog TL up until the "Release after pre-announcement (norm or restr mode)" time-out has lapsed
- by a caller on digital access up until the called party goes off hook.
(***) ISDN calls only
Automatic transmission of
message and the called
station rings simultaneously.
If the called party is out of
service, the calling party
is released (***).
Caling party hears the ringing
tone (*) while the welcome
message is sent to other calling
parties then during the "time-out
before preannouncement"
YES NO
External incoming call
Is the access
assigned to the
welcome message
busy?
Preannouncement
in mode1 or
2 ?
Calling party hears the
ringing tone (*) during
the “time-out before
preannouncement”
Preannouncement
in mode1
or 2?
mode1
Automatic transmission
of message to al
waiting callers
mode2
Automatic transmission
of message to all waiting
callers and the called
stations ring simultaneously.
If a called party is out of
service, the corresponding
calling party is released. (***)
Do one or
several called parties
go off hook during
transmission?
At the end of transmission,
the calling parties
hear the ringing tone or
the "please wait" music.
(**)
NO
YES
Switch to conversation
for called parties that
have gone off hook
mode1 mode2
Automatic transmission
of message
Does the called
party go off
hook during
transmission?
NO
YES
Switch to conversation
Is one of the
called parties
out of
service?
NO
YES
Is the called
party out of
service?
NO
YES
Call returns to the
operator group
Call returns to the
operator group
At the end of transmission,
the calling party
hears the ringing tone
or the "please wait"
music. (**)
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