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VoIP Callback Solution

With our Callback Management solution, service providers can enable users to initiate long-distance calls using a variety of origination methods, thus offering an alternative to costly outbound long-distance rates.

Supported Origination Methods

VoIP_Callback_Mail VoIP_Callback_SMS
Web  SMS
VoIP_Callback_Mail VoIP_Callback_ANI
E-Mail  ANI

How does it work?

  • Pickup your cell or regular phone and dial the access number (you will not be charged for this call because the recipient’s server will reject the call)
  • When you hear the ring tone, hang up
  • System will call you back in 5 seconds
  • System will ask for the Pin number, enter your pin followed by the pound key
  • System will announce “please enter your destination”
  • Enter your destination followed by the pound key and system will terminate the call over IP.


Who is it for ?

  • ITSPs in countries with a monopolistic state-owned telecom, who are seeking enhanced profit from callback services
  • Service providers who already offer prepaid and postpaid calling card services over a switched circuit network
  • Telecom companies and other service providers interested in offering callback services to a wide range of important target communities
  • Enterprises seeking to extend the reach of their web presentations by allowing visitors to connect to sales or other representatives by just clicking a button
  • Speech-enabled web portals



  • Easy integration with existing VoIP infrastructure
  • Compatible with all SIP or H.323 terminating gateways or carriers
  • Billing-assisted
  • Web interface for end user accounts
  • Open source for integration into business partners’ back office/website
  • Unlimited license


Solution Components

  • PortaUM gateway
  • Set of customizable HTML forms for each web callback scenario
  • Perl CGI script


Key Features

  • Compatibility with most existing VoIP carriers (H323 or SIP)
  • Unlimited number of callback scenarios
  • IVR support


ANI Callback service

ANI Callback service allows telephone users to initiate long-distance calls by calling a Platform which, in conjunction with PortaOne ANI Callback, authenticates the user by his/her telephone number (ANI) and connects him/her to the destination party.



Web callback

Web callback allows users to initiate a phone call by completing and submitting a form on a website. PortaOne Web Callback processes the submitted information and connects the user with the other party.


SMS Callback

SMS Callback service allows GSM cell phone users to initiate long-distance calls by sending an SMS message to a SMS callback module connected with a third-party GSM gateway.


Email Callback

Email Callback service allows users connected to the Internet to initiate calls by sending an email message to an email callback application.


If you are interested in our “Callback Solution”, please Register to use our service or contact us.


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