User Manual

Data Sheet
S0 Attachment
S0 Attachment for 4FTR and LCPU
The following flow chart illustrates how an S0 public address system works:
Call S0
Pub. Addr.
Authority Check
yes
Authorized?
System Hangs
u
p
Check System
Status
no
Depending on
S
y
stem
V
oice Output
Public Address with
Lower Priority is
Interru
p
ted
Pos. ACK and
Public Add
r
ess
Check End Criteria
yes
Bus
y
?
yes
Higher
Priority?
Priority Check
Neg. AC
K
Depending on
S
y
stem
no
Timeout?
no
ReducePrio. ?
no
V
oice Pause?
Hun
g
U
p
?
Pos. ACK
LK Circuit Check
yes
Loudspeaker
Circuit OK?
V
oice Output
Depending on
S
y
stem
V
oice Output
Configured?
yes
Ignore Caller?
yes
no
no
yes
no
no
yes
yes
yes
yes
V
oice Output
Configured?
Date
20.08.2008
Page:
6/10
Author:
HS
Document-No.:
S0_DB_2870_01
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