The communication is really important in any organization, because it helps the managers to achieve their goals, and serves any flow in the business. The communication is the exchanging the information between two parties or more, through many methods (speech, written…)
In the organization, if we have problems, and some parties are unwilling to go through the solution, and they make obstacles although they have resources, this problems not will been solved, in this case we have an inactive communication. But if each person use their resources to make the communication positive and they ensure the willingness to go through the solution as well, than the communication become effective.
In fact, the effective communication is the interaction between two or more person to exchange information or ideas, using many tools exist with purpose of understanding the message successfully. It is a process of information sharing among managers (employees) but they must keep in mind some consideration as the goal, the meaning, and what others understood.
To have an effective communication (widely in the organization), it must to pursuit 7C’s principle, in this way we have:
 Concrete: the message will subject, not empty and supported by arguments as well.
Coherent: the messages will be logical and well planned.
Clarity: the message should be clear to avoid wrong assumptions
Commitment: the person would be professional toward others because it measures one’s  dedication.
Consistency: choice of words during communication (at least possible words)
Completeness: each message have a conclusion and never stop sentences incomplete. 
Courteous: in the communication with others, it is better to be honest and respectful although the different.