Procom S0 Attachment - Manual (Page 6)

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
up
Check System
Status
no Depending on
System
Voice Output
Public Address with
Lower Priority is
Interrupted
Pos. ACK and
Public Address
Check End Criteria
yes
Busy?
yes
Higher
Priority?
Priority Check
Neg. ACK
Depending on
System
no
Timeout?
no
ReducePrio. ?
no
Voice Pause?
Hung Up?
Pos. ACK
LK Circuit Check
yes
Loudspeaker
Circuit OK?
Voice Output
Depending on
System
Voice Output
Configured?
yes
Ignore Caller?
yes
no
no
yes
no
no
yes
yes
yes
yes
Voice Output
Configured?
Date 20.08.2008 Page: 6/10 Author: HS Document-No.: S0_DB_2870_01
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