LDAP (Lightweight Directory Access Protocol) is protocol which provide the feasibility of maintaining, organizing, monitoring and distributing of data over an internet protocol network either public Internet, corporate intranet or both. Directory service of LDAP play very useful role for sharing the information of users, services, systems, applications and individuals through the network

We usually know fax as a transmission of text or image over a telephone lines, a specific number is associated with the fax machine. Fax machine scan the original text or image and convert it to a bitmap. After converting, these text and images are sent through electrical signals using telephone lines.

There are many dialers available in the market and every dialer has its own specifications and benefits in term of use. Predictive dialer is mainly used in call center because of its very effective feature of using statistical algorithm which has the ability to reduce the waiting time for agents.