SoftSwitch, billing, Apache+PHP+Perl and MySQL a server in one bottle on platform Windows NT/2000/XP. Has convenient Web-interfaces for the manager of a server, resellers and end users. Allows to create unlimited quantity of resellers on the basis of 16 tariff plans, and also allows to create for any reseller the exclusive tariff plan. Conducts real-time billing for the reseller and the end user. Has the built in subsystem of statistics. Considers the traffic of supplier VoIP, allows to become attached to its rules of the account. Allows to connect practically any analog and digital gateways through iplink. Has special function of rent of gateways to resellers from the manager.

Allows resellers independently:

- to establish own gateways of an IP-telephony

- to establish own flexible system of tariffing for unlimited quantity of users with an opportunity to direct calls on mobile and stationary phones and tarification them thus,

- to conduct a card platform for PC2Phone,

- to conduct a card platform for Phone2Phone, - to establish and serve public telephone booths,

- to carry out transit of the traffic,

- allows to connect any analog gateways or IP-phone through a "card" input, without registration on gatekeeper.

On a site http://4sms.org it is possible to download a demo of a server, the documentation in Russian and English languages and a little free-of-charge SoftPhones.

In the same place it is possible to be passed on the demo of Web-interfaces, for reception of fuller representation about opportunities, without downloading the documentation and server. The price of all together - below what one only ipsoft:)