Mediant 1000B Gateway & E-SBC
Hardware Installation Manual 18 Document #: LTRT-41441
Color State Description
Blinking Phone connected to the port rings.
Red
On Error - malfunction in line or out of service due to Serial
Peripheral Interface (SPI) failure.
3.2.2 FXO Module
The FXO module provides the Foreign eXchange Office (FXO) interfaces. Up to six FXO
modules can be installed in the device. Each FXO module can provide up to four FXO
interfaces and therefore, the device can support up to 24 FXO interfaces (i.e., 6 modules x
4 ports).
Notes:
• The standard FXO module supports outdoor and indoor (lightning protection) loop-
start signaling. The FXO G module supports both loop- and ground-start signaling
(but only supports indoor protection).
• To enable ground-start signaling, use the ini file parameter GroundKeyDetection
(refer to the device's User's Manual).
3.2.2.1 Ports Description
Each FXO module provides up to four analog RJ-11 ports. The ports are labeled I, II, III,
and IIII.
Figure 3-3: FXO Module
3.2.2.2 LEDs Description
Each FXO port provides a LED for indicating operating status, as described in the table
below:
Table 3-4: FXO Module LEDs Description
Color State Description
Green
On Off-hooks the line toward the PBX.
Blinking Detects a ring signal from the PBX.
Red
On Error - malfunction in line or out of service due to Serial
Peripheral Interface (SPI) failure.
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