Specifications: 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. Function 1) able to pre- store up to 8 card accounts, compatible with all types of calling cards; 2) enables auto-switch and rerouting of long distance calls to telephone network according to the area code dialed/card sequence number selected 3) support the setup of private password. 4) able to setup system password and lock the data; 5) supports calling card balance inquiry (custom programmed) 6) supports local voice prompted setting and remote configuration for maintenance and programming. For more info, pls visit our website Good quantity, good service! ---our guarantee, your choice!