We currently use a number of Clarent Gateways for our VoIP network ( GW1200`s ), but we are looking to migrate, can anyone give me an idea of what most people use, i am quite new to this field so any/all assistance would be greatly appreciated.
A lot of people use Clarent, most will migrate to cisco probably if at all. The clarent gatekeeper offers interoperability with Cisco H323 devices and hence provides a migration path (at a price).