Installation Manual 24 Document #: LTRT-10205
Mediant 800 MSBG
The RJ-45 connector pinouts are described in the table below:
Table 2-6: RJ-45 Connector Pinouts for GbE/FE with PoE
Pin Signal Name
1
Ethernet signal pair (10/100/1000Base-T) and PoE NEG
2
3
Ethernet signal pair (10/100/1000Base-T) and PoE POS
6
4
Ethernet signal pair (1000Base-T)
5
7
Ethernet signal pair (1000Base-T)
8
Shield
Chassis ground
2.4.4 Connecting to FXS/FXO Interfaces
The procedure below describes the cabling of the device's FXS and FXO interfaces. This is
applicable only if the device is housed with FXS and/or FXO interfaces.
Warnings:
• To protect against electrical shock and fire, use a minimum 26-AWG wire
to connect FXO ports to the PSTN.
• Ensure that the FXS and FXO ports are connected to the appropriate,
external devices; otherwise, damage to the device may occur.
• FXO ports are considered TNV-3; FXS ports are considered TNV-2.
Notes:
• The device can be ordered with a combination of FXS and FXO
interfaces, with only FXS interfaces, or with only FXO interfaces. For the
available hardware configurations, refer to the device’s Release Notes.
• FXS (Foreign Exchange Station) is the interface replacing the Exchange
(i.e., the CO or the PBX) and connects to analog telephones, dial-up
modems, and fax machines. The FXS is designed to supply line voltage
and ringing current to these telephone devices. An FXS VoIP device
interfaces between the analog telephone devices and the Internet.
• FXO (Foreign Exchange Office) is the interface replacing the analog
telephone and connects to a Public Switched Telephone Network (PSTN)
line from the Central Office (CO) or to a Private Branch Exchange (PBX).
The FXO is designed to receive line voltage and ringing current, supplied
from the CO or the PBX (similar to an analog telephone). An FXO VoIP
device interfaces between the CO/PBX line and the Internet.
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