PBX or Centrex Services

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PBX or Centrex Services 3
Your system may work behind a PBX or Centrex system:
■ PBX services are provided by a private telephone switch.
■ Centrex services are provided by your local telephone company from a Central Office (CO) outside your premises. These services include the Centrex lines connected to your control unit modules and some set of features—such as hold, conference, or transfer—available on those lines. Centrex services may be offered in your area under a different name. For specific Centrex features to be available to you, your company must subscribe to those features. For specific information about using Centrex features, see the Centrex documentation provided by your local telephone company.