The Cisco Unity IP Media Gateway products provide a feature-rich integration between several traditional PBX switches and Cisco messaging systems, offering a mechanism to get all the productivity benefits of a Cisco unified messaging or voicemail solution while protecting your existing PBX infrastructure investment. Using the PIMG or TIMG along with Cisco Unity or Cisco Unity Connection can become a central element in the coexistence of your traditional and IP environments, or it can offer a smooth and controlled migration path to a full Cisco IP Telephony solution.