call back
- Dial Back is a security mechanism for preventing unauthorized dialing into networks. In this method, the network software contains a list of authorized users and their phone numbers. When a user calls, the server receives the login and recognizes the subscriber's phone number. The server then terminates the connection, calls the subscriber number and establishes a new connection to the subscriber by redialing. The connection is therefore always established on the server side.
- Dial-back is also a security function of modems. After the password has been transmitted, the modem interrupts the established connection and automatically sets up a new connection to the subscriber, which the subscriber can then use to transmit his data. This measure prevents unauthorized persons from gaining access via the modem connection.
- In the case of call transfers via call-by-call( CbC) providers, the connection request for the call-back with the telephone numbers is requested from the CbC center via the Internet. After a short period of time, the exchange calls back to the customer who ordered the call-back and does not establish the connection to the desired call party until the customer picks up the phone.
- Call-back is also available as a call-back function for visitors to a website. In this case, the phone number of the customer advisor can be displayed or a call-back connection can be established via a call-back button. The customer advisor can be contacted and questions answered via these connections.