Technical Manual - Tunstall GmbH

2. Prior knowledge required
2.2 System structure
8
Group bus
Group
electronic
Group
electronic
LAN
LAN for
ESPA 4.4.4
remote maintenance Paging/DECT
Fig. 2: System structure
Ward bus
Secondary lines Secondary lines
Room 1 Room 2
Ward bus
Secondary lines Secondary lines
Room 1 Room 2
Physical group 2
Physical group 1
The CONCENTO PLUS nurse call system is controlled decentrally via Group
Electronics. Each Group Electronic controls a ward bus, i.e. a physical group.
The nurse call system is based on a bus system that is comprised of a group
bus and ward buses. The group bus interconnects all Group Electronics, the
Management Interface and the fire alarm interface of the nurse call system. The
ward bus is connected to a Group Electronic and connects all room terminals
of a physical group to each other: Terminal SD6 P, Terminal S4 P, Terminal S4
B, display modules, call/presence combination bus (RAB) and Management In‐
terface.
The room terminals control the devices inside a room. The devices are connec‐
ted to the room terminal in a star or line configuration as ”secondary lines”.
The Management Interface provides interfaces to external systems. It is con‐
nected to the group bus or the ward bus, depending on the application. The Ma‐
nagement Interface provides interfaces to the following systems: a/b interface
to telephone systems, ESPA 4.4.4 interface to DECT or pager systems and a
network access for service access via FTP.
CONCENTO PLUS - Technical Manual, 11/12 (Rev. 3.0), 00 8814 14