Free Erlang traffic calculators

The world's first online Erlang traffic calculators

Telecom Traffic Online
  Home | Free calculators | Products | Tech. papers | Forum | About us
Hosted VoIP softswitch - H323 and SIP
A-Z termination using H.323 and SIP
A-Z termination
  • VoIP softswitch

    DUAL Softswitch is a complete Voice over IP switching and billing solution.  Flat monthly rate.

    Web control panels; Least Cost Routing; Excel tariff uploads; SIP and H323 support.

    H323 SIP softswitch >>

  • VoIP calling

    Specifically designed for easy, low cost SIP calls from Nokia mobile phones.

    Cheap SIP calls from Nokia phones

    Asha Talk >>


    SIP Trunks with routing designed specifically for corporate customers.  Supports IP-PBXs such as Asterisk.

    Erlang VoIP >>


    Very low SIP rates for wholesale and retail VoIP calling, but with a low minimum payment and 1/1 billing for all customers.  Suitable for call shops.

    Galaxy SIP >>


    VoIP services for call shops, businesses and home users.   Powerful reseller control panel.

    Choose from three tariffs, depending on your pricing / quality priorities.

    DUAL Talk >>


    Our lowest rates for wholesale carriers with their own VoIP switch.

    44Mobile >>


    Our new service designed specifically for Call Shop SIP termination.

    Call shop VoIP >>


    UK direct route with CLI.

    44Direct >>

SIP and H323 softswitch

We offer a complete Voice over IP switching and billing solution.  DUAL Softswitch enables you to provide a comprehensive VoIP calling service using SIP and H.323, by providing robust call switching capabilities to your carriers’ facilities, with real-time call failure overflow.  DUAL Softswitch can be the back-end switching and billing system for your wholesale termination, call shop service or consumer VoIP offering.

Comprehensive billing is presented to your customers using online control panels, and further control panels offers a flexible call shop billing system.

VoIP softswitch features

DUAL Softswitch will work hard behind the scenes to make your VoIP service as reliable and accessible as possible.  Initial call switching is based on Least Cost Routing, with failed calls being overflowed to multiple carriers in real time.

You can concentrate on building your VoIP business, while DUAL Softswitch automatically optimises your switching and billing facilities by managing your Least Cost Routing; implementing tariffs and even generating Excel rate sheets for your customers.  Your customers will benefit from an online CDR control panel and a powerful Call Shop Billing System.

H.323 and SIP softswitch architecture

The features available include:

  • Unlimited tariffs to assign to different types of customers
  • Tariff uploads and downloads using Microsoft Excel files
  • An online customer control panel for your customers to view their balance, call records and tariff
  • An online Call Shop Billing System for your customers to manage their pre-pay or post-pay call shop
  • Automatic generation of Excel rate tables for customers to download
  • Automatic customer email notifications for tariff updates and low balance warnings
  • Online invoices automatically generated for your customers
  • Unlimited carriers for call termination
  • Least Cost Routing supporting up to ten carriers
  • Automatic call overflow (Alternative Routing) between carriers in the event of call failures
  • Routing and rate overrides at an account or tariff levelA dedicated IP address for your switch
  • An online control panel for you to control all aspects of your VoIP switch

Getting started

You can have a complete H.323 and SIP softswitch switching your customers' traffic to your carriers in a few hours.  Signup for a hosted softswitch now.
Home | Free online calculators | Products | Technical papers | Forum | Contact us | About us

Last modified: 07 June 2011

Copyright © 2011. All rights reserved.