Black Box Compact T1 MT850A, Руководство пользователя

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7-2 Compact T1 - Release 6.1
FXO Voice Card
Overview
Overview
The FXO Voice Service card provides high-density provisioning of reliable Foreign
Exchange Office (FXO) or Direct Inward Dialing (DID) telephone services. Eight FXO
or Dial Pulse Terminate (DPT) telephone line channels can be deployed on each FXO
Service card. These cards can be inserted into any slot of the Compact T1 six-slot
chassis, and up to 96 lines in two side-by-side chassis occupying just two rack units of
space.
The FXO function sinks battery current and detects ringing voltage originating from
the central office or PBX line, enabling the transport of dial tone and calling features
to remote locations. When configured as a DPT interface, the channels sink and detect
forward and reverse line current, emulating the functions of a central office DID line.
DID service provides the necessary dialed digits to ring a telephone extension directly
through a PBX, without requiring attendant intervention. DPT and FXO functions are
also used with Automatic Call Distributor (ACD), voice mail, and Computer
Telephony Integration (CTI) applications.
A unique range of software-controlled signaling capabilities connects virtually any
type of 20 wire battery-sink telephone line service. Supported features include caller
ID, calling party disconnect, distinctive ringing, ground start, and E&M signaling
conversion. Automatic impedance balancing provides echo-free service connections
across a wide range of customer equipment and line conditions. V.90 transmission
ensures optimal dial-up modem performance.
As a component of the Compact T1 platform, the FX0 Service card as several local and
remote management options available through the Compact T1 Controller. The card
can be locally configured and managed using the front-panel DIP switches or the
Command Line Interface (CLI). Front-panel LEDs indicate call progress and channel
status.