The widespread adoption of smartphones and tablet devices is changing the way that subscribers see their service providers. Unlimited voice services no longer command premium pricing, but are viewed as “table stakes” in a broader service offering that must now include multimedia (voice, data, video) communications with a mobility component. As a result of this shift, many service providers are adopting a SIP-based, Long Term Evolution (LTE) network strategy to deliver this multimedia experience to their subscribers. While LTE is today seen as the most viable of the mobile multimedia network architectures, it has never been the only architecture. As recently as 2008, WiMAX was viewed as a logical, long-term architecture to deliver IP voice, data and video over wireless networks.