| What's Included | ||
| Base Board | 1x PCI | |
| FXS (single) | 0 | |
| FXO (Dual) | 4 | |
| EC Module | None | |
Digium Analog Cards and Modules
The Digium analog cards, with their interchangeable single and quad FXS and FXO modules, can eliminate the requirement for separate channel banks or access gateways. The optional hardware echo cancellations module (sold separately) provide a G.168-compliant solution to eliminate echo, but without the performance impact of a software-based solution. Scaling of an analog card is accomplished by adding additional cards and modules.
The Digium 4 Port and 8 Port Analog Cards come in PCI 2.2+ (3.3/5.0V) and PCI-E 1.0+ (X1) Bus Type Slot Connectors. The 4 port series is a half-height card with a standard size Slot Bracket. (Low Profile Bracket is Sold Separately).
A4Axx, A4Pxx - 4 Port PCI
A4Bxx, A4Exx - 4 Port PCI-E
A8Axx, A8Pxx - 8 Port PCI
A8Bxx, A8Exx - 8 Port PCI-E
Quick Review of the Digium FXS, FXO and Echo Cancellation Modules
Station: FXS (Foreign Exchange Stations). FXS is an interface that connects to a station, such as an analog telephone or the FXO interface of another PBX. It provides ringing voltage and battery to the FXO devices.
Digium FXS comes in 2 options:
Station: FXO (Foreign Exchange Office). FXO is an interface that connects to a trunk line, like the one from your service provider. It receives ringing voltage and battery from FXS devices. FXO interfaces are used to connect your PBX to the POTS (PSTN). One FXO channel is required for each line you receive from your telco.
Digium FXO comes in 2 options:
VPM032 Echo Cancellation Module. The optional Digium hardware cancellation module VPM032 is a plug in device for the 1A4A, 1A4B, 1A8A, 1A8B series card. The VPM032 provide a standard G.168 compliant solution to eliminate echo without any perfonrmance impact on the PC.
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