A Tier 1 mobile carrier was operating a statewide network of more than 1,000 cell sites interconnecting with 2 primary mobile switching centers (MSCs). The carrier was spending more than $15 million annually on local access transport services for backhaul from the cell sites to the MSCs and interconnection from the MSCs to the local telephone company’s (LEC) access tandems. A planned 3G network upgrades promised to double the T1 capacity requirements at more than 600 cell sites.
The plan was to reduce the leased network transport costs in the face of pending capacity growth, while positioning the backhaul network to support backhaul for 3G broadband data services. Requirements at the facilities level between the cell sites and the MSC and between the MSC and the public switched network. By leveraging its FiberSource® design platform and network optimization tools, CFN designed an optimized metro core fiber network that interconnected the MSCs and pushed interconnection points with the LEC out from the MSCs to 7 strategically placed LEC central office collocations. CFN then working with the leading optical equipment vendors designed a turnkey optical transport platform to displace existing DS1, DS3, and SONET circuits that were at or past term. In addition, the optical transport platform was designed to deliver an aggregate capacity of more than 4,000 T1s.
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