Our unique solution boasts a fast and easy installation that enables inbound and outbound traffic for VoIP and PSTN.

System Features:

      • Capacity:
        - Systems from 4 to 32 VoIP channels
        - 2 x E1-PRI or 2 x T1-PRI
      • Configuration:
        - Bi-directional calls (Inbound and Outbound calls)
        - In-line connectivity (3-leg topology)
        - LCR functionality
      • PBX Compatibility: with IP systems and PABXs of leading manufacturers worldwide
      • Chassis:
        - Available 3U x 19" size
        - Rack-mountable design
      • Management & Control:
        - Remote web-based
        - Local serial port
      • High voice quality
      • Fast and easy installation

Key Benefits for Corporate Business:

  • Migration to VOIP Utilizing Existing Infrastructure
    By integrating one of our VoIP PRI Gateways with existing PBX/PABX telephone systems, businesses of all sizes can benefit from:
    - Low-cost Voice over IP calls.
    - Multi-site / Multi-branch connection.
    - Expanded PBX capacity and capability.
    - Substantial cost savings.
    These PRI VoIP Gateways directly connect to any one of existing ISDN PRI, E1 PRI, T1 PRI (T2/S2 ISDN, RDSI) interfaces of the office PBX, and enable bi-directional traffic for both VoIP and PSTN, all in one compact box.
  • PSTN Access for VoIP Systems
    For those companies who are considering migration to VoIP or have already migrated to VoIP and have an existing IP-PBX, Hypermedia's VoIP PRI Gateways offer the advantage of opening the IP-based switchboard directly to the PSTN networks, saviing the cost of a PRI card. 
  • In-Line Connectivity (3-Leg Topology) with LCR Functionality
    Hypermedia's VoIP PRI Gateway can be situated between the PBX and the PSTN, saving the cost of an additional PBX E1/T1 port. In this configuration, it comes with two E1/T1 PRI interfaces featuring advanced Least Cost Routing (LCR).
  • Intelligent Connectivity Hardware
    Besides offering PBX/IP-PBX users a powerful telephony cost saving tool and advanced least cost routing capabilities, our VoIP PRI gateways can also deliver voice connectivity options to PSTN and GSM networks in one box.

Major Advantages:

  • Use of existing E1/T1 ISDN PRI interface of the PBX
  • Fast return on investment (ROI)
  • No need of telephony infrastructure changes
  • Compatible with all ISDN PBXs  
  • In-line connectivity (3-leg topology) – between the PBX and the PSTN
  • Advanced Least Cost Routing (LCR) functionality
  • Scalable – from 4 to 32 simultaneous calls
  • Optional GSM connectivity 
  • Remote web-based management and control
  • 24 months warranty

Given the systems' flexibility, modularity and scalability, these advanced VoIP PRI gateways can be pre-configured to meet precise customer requirements so companies can easily expand the cost-effective systems to meet their evolving telephony needs over time.


Available: 4 to 32 ports with single PRI and 4 to 32 ports with double PRI.


As a general guideline, we recommend installing our single E1/T1 PRI trunk PRI-VoIP Gateway in large organizations for creating an alternative, dedicated PRI trunk for VoIP access. We recommend implementing our 2 x PRI VoIP Gateway, with integrated LCR, for companies with a small scale PBX usig a single PRI trunk.


* If you are a Telecom reseller interested in selling our VoIP PRI Gateways, we invite you to Join Our Distributor Program.

* If you want more information about becoming a distributor, send us an email.

Product Brochure
Installaion Guide
User Manual
Case Studies & Application Notes

VoIP PRI Gateways

ISDN PRI to VoIP Solution

The VoIP PRI Gateways from Hypermedia are scalable PRI-VoIP gateways with 4 up to 32 VoIP ports. Without changing the existing communications infrastructure, they enable PRI trunking for IP-based systems and access to VoIP for legacy phone systems.


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