First you need to identify the specific barriers to communication that are involved.
Along with interpersonal communication barriers, there are many other barriers, each with individual solutions. Here are two examples of communication barriers and their solutions.
Your employees might get along very well, but you can still run into communication barriers. Misinterpretation about a task/event/product can cause many problems within an organisation, or with its clients. In order to avoid misinterpretation an organisation needs well documented procedures, policies, reports on meetings and regular updates for all involved. Noises and other distractions in the work place can also lead to an increase in misinterpretation.
Lack of Knowledge
A good organisation will have exceptional communication between different divisions, and also with clients. A lack of knowledge about a product, or between (for example) the sales and marketing divisions of a company, can seriously damage the organisation's reputation, customer base or revenue.
Usually, top levels of management should take responsibility to ensure that lower levels of employees have sufficient training in order to meet the needs of their clients and to perform their duties.