When operators consider upgrading a network to NG-PON, top of mind is choosing a technology that will deliver competitive services and generate a good return on investment. Also important is a balance between short- and longer-term thinking: a wrong choice today could lead to an expensive forklift upgrade in the future. This paper explores the drivers behind NG-PON migration, the consideration that should be given to virtualization, and why XGS-PON has emerged as the NG-PON technology of choice, with industry analysts predicting it to become the dominant PON technology within 5 years.

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