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

• Web
• SMS
• Email
• ANI

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