Aastra OpenCom 100 series, Руководство по монтажу и пусконаладке

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Installation
58
Power Failure
In the event of a power failure, all the contents in the memory (programme and user
data) are saved without change. The internal clock continues to run for 24 hours. If the
power failure lasts longer than 24 hours, the time and date are reset to the factory
setting when power is switched on again. When the first external outgoing call is
made, the time and date are set to the current value as given by the exchange.
On the multi-terminal access, the OpenCom 130 include an emergency service. In the
event of a power failure, the external S
0
1 port is switched over to the S
0
2 port so that
you can still use a connected telephone to make a call.
Emergency operation on a system access is not possible.
Connectible Terminals
The OpenCom 100 ports already offer a large number of possibilities for connecting
terminals. By installing additional interface cards (in an OpenCom 130 / 150) the
number of ports can be increased as required.
One of the many possible configurations is shown in the following diagram.
Example of port assignment of the OpenCom 130 with terminals
U
pn
3/4
a/b
1/2 a/b
3/4
Sensor 1
LAN
S
0
1 ext
NTBA
R
Hub
R
COM
U
pn
1/2
S
0
2 int
Intercom/Relay
Intercom/Door opener
Actuator
1 + 2