Many large companies have extensive data communications networks internally and across sites.
No need to spend extra for voice services, use existing network for VoIP services.
Advantages:

  • Migrating from copper-wire to VoIP over data network
  • Better use of bandwidth
  • Lower cost – no duplicating services
  • Unified communication systems – single infrastructure to manage
  • Dual-mode phones – use VoIP on internal network then switch to external network

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