D230 Series

The OpenVox D230 Series is now the leading 2-port T1/E1/J1 PCI‑E card in the open-source industry. It fully utilizes the Octasic® hardware echo cancellation module to deliver superior voice quality on T1, E1, and J1 interfaces.

The D230 Series is the most advanced 2-port asterisk® card, offering superior quality in the open-source community. It supports T1, E1, and J1 environments and can be selected per card or per port. This cutting-edge innovation allows users to adjust the interrupt frequency to reduce CPU load by up to 70 % and adjust the number of interrupts to avoid interrupt sharing or conflicts.

The D230 Series features an onboard echo cancellation module based on Octasic® DSP. The EC module based on Octasic® DSP enables users to eliminate echo tails of up to 128 ms or 1024 taps across all 64 channels in E1 mode or 48 channels in T1/J1 mode. In addition, this module uses Octasic® voice quality enhancement to provide superior sound quality on all calls.

The D230 Series supports industry-standard telephony and data protocols, including Primary Rate ISDN protocol families (N. American and Standard Euro) for voice, PPP, Cisco, HDLC, and Frame Relay data modes. Line-side and trunk-side interfaces are supported.

The D230 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

Voice-over Internet Protocol (VoIP) services

Complex IVR trees

“Meet‑Me” Bridge Conferences

Calling card platforms

VoIP gateways (supporting SIP, H.323, and IAX)

Legacy PBX/IVR services

Voice/data router (replaces expensive routers)

PRI/Switch compatibility – Network or CPE

Minimum hardware requirements

Pentium III 800 MHz

128 MB RAM

Operating systems

Linux (all versions, releases, and distributions since 1.0)

Technical specifications

2 T1/E1/J1 ports with PCI interface for high-performance voice and data applications

RJ48 connector

FPGA design, field-upgradable firmware

Power consumption: 2,3 W minimum, 3,5 W maximum at 3,3 V or 5 V.

Operating temperature: 0 °C to 50 °C

Dimensions: 2U Form factor: 12 × 6,4 × 1,8 cm

Octasic® DSP echo cancellation module – EC2064

128 ms tail/channel (on all channel densities)

Octasic® music protection

Adaptive noise reduction

Automatic level control (G.169)

Field-upgradable algorithm

V.25 / V.8 answer tone (with and without phase reversal)

DTMF per Q.24

No CPU load due to echo cancellation.

Does not increase the card’s physical size; no additional slot is required

EC2064 power consumption: 0,33 W/3,5 W

Storage temperature: -40 °C to 75 °C

PRI Switch compatibility

EuroISDN (PRI or PRA) – Q.931/Q.921

Network or CPE

AT&T 4ESS

National ISDN 2

CAS voice modes

DMS 100

Lucent 5E