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Hardware overview 19
Installation
FXO port All BSG units have one Foreign Exchange Office (FXO) port
that connects to the telephone line coming from the
Public Switched Telephone Network (PSTN) provider.
FXS ports (2) All BSG units have two FXS ports to connect to the service
provider using a single RJ45.
For the BSG8, the FXS2 line maintains a connection to FXO
during a power outage for emergency dialing.
For the BSG12, the FXS1 line maintains a connection to FXO
during a power outage for emergency dialing.
WAN interface The BSG8ew and BSG12ew have one FE WAN interface.
The BSG12aw has an ADSL/ADSL2+ WAN interface.
The BSG12tw has two T1/E1 WAN interfaces.
If the BSG8ew/12ew/aw/tw loses the primary WAN connection
(Ethernet, DSL, the or T1/E1), all calls from the analog FXS
phone or any of the Session Initiation Protocol (SIP) phones
associated with the SIP server via WAN connection can be
routed to the FXO line, if configured in the backup dial plan. If
an existing, non-emergency call is in progress on the FXO line
during the incident emergency call attempt, the
non-emergency call is terminated and the emergency call is
propagated in its place.
Console For BSG12ew/aw/tw only. An RJ45 console port for
debugging purposes.
WiFi access point All units use integrated IEEE802.11b/g WiFi access point.
Component
Bsg8 ew or BSG
12ew/tw/aw Description