Auto dialer for calling card

our auto dialer can work where there is pre-paid telephone and pre-paid card.
Our auto dialer has good security protection which could help carriers and IP card vendors to bind their card (access number, card number, PIN etc) with auto dialer, without knowing the password, user could not modify it. So user will come to you again when they need to buy more minutes from you.
for more info,pls visit our website

A dialer (US) or dialler (UK) is an electronic device that is connected to a telephone line to monitor the dialed numbers and alter them to seamlessly provide services that otherwise require lengthy access codes to be dialed. A dialer automatically inserts and modifies the numbers depending on the time of day, country or area code dialed, allowing the user to subscribe to the service providers who offer the best rates. For example, a dialer could be programmed to use one service provider for international calls and another for cellular calls. This process is known as prefix insertion or least cost routing. A line powered dialer does not need any external power but instead takes the power it needs from the telephone line.