VoIP softswitch and billing
SIP softswitch and billing system
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Hosted VoIP switch

DUAL Softswitch is packed with features, designed to provide you with a comprehensive switching and billing platform to power your VoIP calling service. 

  • Features

    Least cost routing
    PayPal integration
    Failed call overflow
    Unlimited tariffs
    Special rate overrides
    Excel rates generation
    Customer control panels
    Call shop system
    Customer emails
    Unlimited carriers
    Routing overrides
    H.323 and SIP
    Fully hosted service
    Dedicated IP address
    Web management

    See more >>

  • Getting started

    Signup for a DUAL Softswitch account and get your own softswitch with no capital investment within hours.

    Account sign-up >>

Call switching

DUAL Softswitch is a robust and scalable VoIP switch.  It was built in-house and has been switching our own VoIP traffic since 2003.
  • Calls can arrive and leave the switch using H.323 or SIP.  We automatically convert between these protocols.
  • For H.323, gateway to gateway; gatekeeper to gatekeeper and gateway to gatekeeper are supported.
  • For SIP, IP address and DIGEST authentication are supported, providing you with a platform equally suited to wholesale termination and consumer or call shop services.
  • Many signalling options can be set for customers and carriers, assuring a consistent call signalling flow.
  • Optional RTP proxy to support NAT Penetration.

Call rating

DUAL Softswitch offers extreme flexibility in assigning charges to your customers' H.323 and SIP traffic.
  • An unlimited number of tariffs can be uploaded and assigned to customer accounts.
  • Billing steps and grace periods can be assigned to customer accounts independent of tariffs.
  • Tariffs can be overridden on a per-account basis to supported specially negotiated selling rates.
  • Currency and rating precision calculations can be specified.

Call routing

DUAL Softswitch's powerful routing features ensure that your customers' VoIP traffic is switched to the cheapest carriers you have available.  This is controlled by you using an online Administration System.
  • Unlimited SIP or H.323 carriers can be defined.
  • DUAL Softswitch automatically builds maintains a Least Cost Routing structure of up to ten carriers, based on rates you upload.
  • Carrier rate sheets can be uploaded as Microsoft Excel files.
  • Call overflow in real time of failed calls between carriers (Alternative Routing).
  • Routing can be overridden on a per-tariff and per-account basis.

Customer experience

DUAL Softswitch provides your customers with fast and flexible control panels, and takes on many aspects of customer management.
  • PayPal integration, which allows your customers to buy credit from you online.
  • Automatic generation of Excel rate tables based on the tariffs that you upload.
  • Customer control panel for viewing CDRs, available funds and downloading rate sheets.
  • Self configuring call shop billing system.
  • Automatic emails warning your customers that their calling funds are low or have expired.

VoIP switch architecture

DUAL Softswitch is a fully hosted service.  The VoIP switch and web servers are all located on our own servers and are under your control through a web-based Administration System.

We operate at multiple secure data centres in London for resiliency.   Our systems are monitored 24/7 by experienced and capable telecommunications engineers.

DUAL Softswitch architecture
DUAL Softwitch architecture
(some features may still be under development)

Getting started

You can have a complete H.323 and SIP softswitch running in a few hours.   Signup for a hosted softswitch now.
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