Hardware Installation Manual
18
Document #: LTRT-40881
Mediant 1000B MSBR
Item #
Label/
Module
Component Description
7
Schematic
Extractable Fan Tray module with a schematic displayed on its
front panel showing the chassis' slot numbers. The Fan Tray
module cools the device's components.
3.2.1
FXS Module
The FXS module provides the Foreign eXchange Subscriber (FXS) interfaces. Up to six
FXS modules can be installed in the device. Each FXS module can provide up to four FXS
interfaces and therefore, the device can support up to 24 FXS interfaces (i.e., 6 modules x
4 ports).
Note:
The FXS modules support both loop-and ground-start signaling.
3.2.1.1 Port Description
Each FXS module provides up to four analog RJ-11 ports. The ports are labeled
I
,
II
,
III
,
and
IIII
.
Figure
3-2: FXS Module
3.2.1.2 LED Description
Each FXS port provides a LED for indicating operating status, as described in the table
below:
Table
3-3: FXS Module LED Description
Color
State
Description
Green
On
Phone connected to the port is off-hooked.
Blinking
Phone connected to the port rings.
Red
On
Error - malfunction in line or out of service due to Serial
Peripheral Interface (SPI) failure.
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