Here is full view including all four area PKT v10 I'm working on right now .

This is the unconfirmed PKT file for project.Here I only designed company with four branch.packet tracer version 6.1.1 (Instructor).I will try unloading  Packet tracer setup file later.

https://www.dropbox.com/s/fqmikuc0l84qe3w/wan%20and%20PSTN%20v.5.pkt?dl=0

Ideal Network to be build

project title

Analysis and design an enterprise company network. The company includes geographically independent four campus network. For example Company call center in India where VoIP network and IP telephony need to be used, Company basement and data server in San Francisco and commercial business branch in London and everyone have to report back to main head office situated in New York.