Determine how information has been communicated in the past. How and why did that process have limitations?
Agree on what happens next. How will the process be managed? Who is  responsible for what?
Set measurable communication objectives that are aligned with    business goals.

Engage management in the internal communication strategy initiative and secure their support.
Encourage enthusiasm and commitment. Engage employees in all areas of the business.
Identify key spokespersons and ensure they are properly informed and supportive of the strategy. These communication holders will be imperative to feeding information to the communication process in timely manner.
Develop processes and schedules to support and measure the effectiveness of the strategy.

Determine what mediums are best suited to the internal communication strategy goals. Adapt the medium(s) to the human and financial resources available.
Develop content writing protocols to ensure consistency from all content providers.
Develop a plan for building employee awareness of the importance of the new internal communication strategy.
Following implementation, monitor and review all employee and management feedback regularly. Be prepared to change or adjust the plan or process as necessary.