Voice over Internet Protocol

Voice over Internet Protocol.

VoIP is an acronym for Voice over Internet Protocol. With the help of VoIP

services, the voice of a person can be transmitted into digital signals to be
transported over the internet. VoIP enables you to make calls directly
from a computer through special VoIP enabled applications or chat
applications, or VoIP enabled phones. To use VoIP services,

you would require a high-speed internet connection to transfer data packets.

While some VoIP service providers charge for calls which are made out

of a particular calling area, others may charge a flat rate on

the basis of pulse or talk time.

Lightweight Directory Access Protocol

Lightweight
Directory Access
Protocol

LDAP is an acronym for Lightweight Directory Access
Protocol. It is an Internet Protocol developed by the
University of Michigan. It consists of a directory of records
which is centralized and accessed by programs to retrieve information. Other
than records, it is also used to share devices like a printer on a network. Here, a common
username and password is provided to several users to access LDAP services.
Since it is a protocol, it is used to exchange information between a client and server,
with a set of rules and fi lters. For example, if the sever is an address book, the client will
only establish a connection to the LDAP and vice versa.
Nowadays, almost all email programs support LDAP. Some LDAP clients may only be
able to read from a server whereas some may be able to write information as well. LDAP
allows administrators to defi ne rules for specifi c users such as read, write or execute for
security purposes.
A major disadvantage of LDAP is that it does not include encryption, hence
additional protection like an encrypted SSL connection is required.