Many manufacturing plants still utilize an old key system such as Nortel or Avaya. Since their communication needs are simple, they require only an inexpensive PBX system intended to last them for years.  Ambit can easily deploy a VOIP solution that makes the migration from the old key system to new technology very easy.  Additionally, many plant workers rely on mobile communications; consequently, with VOIP it is easy to integrate cell phones into the VOIP system for seamless communications.