Thanks Brandon for the question.
We will approach the migration to 'LTE" holistically. EPC Mobile Core, integration with other products/capabilities such as policy control, services, business models (network readiness assessment, NOC, Build-Operate-Transfer...), and application partnerships, just to mention a few.
We are also seeing a trend towards decoupling radio related components and packet related components. For example, some operators are going with their radio vendor for the MME while preferring packet solution providers for PDN or LTE/SAE gateway.
Can you provide additional details on your question?
Nagesh