52
Service Functions, Problem Solving
Service Functions, Problem Solving
The case may only be opened by authorized personnel
1
.
Installation work with open case or services involving the
keys inside the case are only allowed to be executed by
authorized personnel
1
.
The green power LED (hardware LED) shows only that the PBX is con-
nected to the 230 Volt mains. This meaning will not change.
The meaning of the other five LEDS of the PBX is marked on the blue
case cover in its default condition (that means without clicking the keys).
왎
The LED „ISDN ready“ signals the external S
0
bus monitoring (see
왎
The LED „ISDN busy“ displays information about the exchange line
status (see
).
왎
The LED „Message“ signals the availability of messages (see
왎
The LED „Remote“ displays information about remote programming
(see
왎
The LED „Data“ displays information about the USB connection
(see
왎
The LED „Data“ displays also information during power-on (see
Symbol Definitions
ISDN ready: Testing external S
0
Ports
If you established a connection to the NT, the LED „ISDN ready“ will
show the functional condition of the external S
0
ports (layer 1 active)
2
.
If this function is not usable with public exchanges outside of
Germany, it can be switched off in COMset.
ISDN busy: Information about the Exchange Line Sta-
tus
The LED „ISDN busy“ reflects the traffic status on the external S
0
ports.
e
1. Authorized personnel: These are persons that are trained for this purpose (e.g.
certified electricians). They must have the necessary knowledge about the
work in an area with potentially hazardous voltage. They must also have the
knowledge about the latest electrical safety standards and requirements.
Default Information Status of the LED Display
LED flashes.
LED glows.
2. In the ISDN definition a so-called layer model is used in order to describe cer-
tain conditions of the communication protocol. In order to establish a connec-
tion, a setup of the layers 1 to 3 is necessary. The layer 1 (bit transmission lay-
er) is providing the physical transmission of raw data.
All the existing exter-
nal S
0
ports are ready
for operation.
One of two possible
external S
0
ports are
not ready for opera-
tion.
(only for COMpact
4410 USB with two
external S
0
ports).
No external S
0
port
can be activated.
All existing
B channels are busy.
(At least) one
B channel is free.
All the existing
B channels are free.
☞
ISDN Message Remote Data Power
ready busy
ISDN Message Remote Data Power
ready busy
Summary of Contents for COMpact 2206 USB
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