This opens up a whole new market for software vendors who could
not previously compete against the platform giants.
While it has been proven that voice services can be offered over the Internet, there is
still work to be done to make this as robust as the traditional networks we use today.
Of course in the end it may not really matter to the key buyers of communications services.
The younger generation does not accord service reliability as high a priority as
their parents, as demonstrated by their choice not to own a landline at home. They are
perfectly content using their cell phone for all their needs, even if the service quality is
not the same as what they could get from landline service.
The transition to an all-IP network means making some changes to the very technology
that makes the Internet possible. These changes will make the technology all that
much more robust and ???carrier grade.??? But more important, the implementation of this
technology is being well defined, providing operators with a clear and reliable means
of implementing IP throughout the network, delivering Internet-like applications to all
subscribers, while still maintaining the very business model that funds the network to
begin with.
This chapter addresses the migration from a legacy network to an all-IP network,
using planned phases rather than ???flash-cutting??? the entire network.
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