D130 Series

The OpenVox D130 Series is now the leading single-port T1/E1/J1 PCI‑E card in the open-source industry. It supports up to 32 channels in E1 mode or 24 channels in T1/J1 mode. It makes full use of the Octasic® Hardware Echo Cancellation module to deliver superior voice quality on T1, E1, and J1 interfaces.

The D130 Series is the most advanced single-port asterisk® card, offering superior quality in the open-source community. It supports T1, E1, and J1 environments and can be selected by card or by 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 DE130 Series offers an onboard Octasic® DSP-based echo cancellation module. The Octasic® DSP-based EC module allows users to eliminate echo tails of up to 128 ms or 1024 taps across all 32 channels in E1 mode or 24 channels in T1/J1 mode. In addition, this module uses Octasic® Voice Quality Enhancement to deliver superior sound quality on all calls.

The D130 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 D130 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 (support SIP, H.323, and IAX)

Legacy PBX/IVR services

Voice/data router (replaces expensive routers)

PRI/Switch compatibility – Network or CPE

Octasic® DSP echo cancellation module – EC2032

128 ms tail per channel (across 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)

Q.24-compliant DTMF

No CPU load due to echo cancellation.

Does not increase the card's physical size, and no additional slot is required.

EC2032 power consumption: 3.83 W

Storage temperature: -40 °C to 75 °C

Operating systems

Linux (all versions, releases and distributions from 1.0 onward)

Technical specifications

Single-port T1/E1/J1 with PCI interface for high-performance voice and data applications

RJ48 connector

Low-profile option

FPGA design, field-upgradable firmware

Minimum hardware requirements

Pentium III 800 MHz

128 MB RAM

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