CHAPTER3 Physical Description
Mediant 1000 Gateway & E-SBC | Hardware Installation Manual
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.
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).
● 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 [GroundKeyDetection] parameter (refer
to the device's User's Manual).
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
LED Description
Each FXO port provides a LED indicating operating status, as described in the following table:
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