System planning consists of first understanding what your organization has for a communication system, and how communications flows through the organization. Once information about what is in place is gathered, a new system can be planned based on the existing needs, desired changes to call handling, new system capabilities, and selected equipment features.
Focusing on what exists now will help to define what needs to be changed to meet the final design. Throughout the information gathering phase, identify where call handling can be modified to better support the organization's goals.
Gathering information about what kind of phone lines the organization has at each site will help with gateway selection and inbound programming. Gather information about every line coming into the building and how it rings in. Gathering special information about who the provider is and any information needed to contact them will come...