Network Infrastructure

A document is required to gives details and the structure of a network design and set-up for a small buisness.

large Financial services company offering mainly Accountancy, Taxation and Audit services to small and large companies locally mainly, but also have a growing international client base. They have currently one branch.
The company are expanding services with a buy-out of 2 smaller financial firms both businesses have proportionally a large client base.
These 2 new branches have a mix of IT equipment, servers, backup solutions, internet provision with email services provided by external hosting providers.
The objective is to implement a new network system across the sites. There currently exists no common organisational security policies/procedures across the branches.

The new system must ensure streamlined delivery of services to their new and existing client base, as well as adopting a consistent staff system across company branches.