A400 Series

OpenVox A400 Series can be used for connecting analog telephones and analog POTS lines through a PC. It supports combinations of FXS and/or FXO modules for a total of 4 lines.

OpenVox A400 Series delivers great voice quality in the telephony systems. With interchangeable FXS/FXO modules, it can eliminate the requirement for separate channel banks or access gateways.
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  • Features
  • Manual

The A400 Series contains 4 module banks. Each bank supports one analog interface. The module banks may be filled with up to 4 FXO or FXS modules enabling the creation of any combination of ports. Scaling of an analog card solution is accomplished by simply adding additional cards.The A400M consists of two parts: the A400MM and the A400MS. The A400MM connects Mini PCI slot while the A400MS installs FXS/FXO modules. A400 Series works with Asterisk®, Elastix®, FreeSWITCH™, PBX in a Flash, trixbox®, Yate™ and IPPBX/IVR projects as well as other Open Source and proprietary PBX, Switch, IVR, and VoIP gateway applications.

Target Applications

  • Channel Bank Replacement / Alternative
  • Small Office Home Office (SOHO) applications
  • Small and Medium Business (SMB) applications
  • Gateway Termination to analog telephones/lines

Technical Specifications

  • Up to 4 ports through a combination of FXS and FXO modules
  • 4 RJ-11 interfaces on a single PCI bracket
  • Firmware accelerate I/O access to achieve high stability

Minimum Hardware Requirement

  • 800-Mhz Pentium III
  • 128MB RAM

Operating Systems

  • Linux (all versions, releases and distributions from 1.0 up)


  • RoHS Compliant
  • Certificates: FCC, CE and LVD

A400 Series Analog Cards
  Product Model A400E A400P A400M

2.77W Minimum,11.6W Maximum

2.77W Minimum, 11.6W Maximum at 3.3V or 5V. 1.8W Minimum, 11.6W Maximum
Operation temperature 0°C to 50°C   
Storage temperature -40°C to 125°C
Dimension 136.3mm*111.5mm*16mm 136.3mm*101mm*16mm

A400MM: 59.6mm*44.6mm*10mm

A400MS: 112mm*113mm*13mm

Weight 89g 82g

A400MM: 14g;

A400MS: 64g

Interface PCI-E PCI Mini PCI


  • Caller ID and Call Waiting Caller ID
  • ADSI Telephones
  • Loopstart Signaling Support
  • Up to 4 Simultaneous PSTN Calls
  • Interchangeable FXS and FXO modules
  • 3-Month "No Questions Asked" Return Policy
  • Five Year Warranty