A method and system includes: one or more phone systems; a policy processor coupled to the phone systems; and a voice identity mapping policy stored in a data storage, the data storage being accessible to the policy processor. The voice identity mapping policy includes: a plurality of search voice identities mapped to one or more target voice identities, where the plurality of the search voice identities are applicable to a plurality of users, where each of the search voice identities and the target voice identities comprises a username for one of the plurality of users, and time attributes indicating when the voice identity mapping policies are valid. When a voice identity for a recipient of a call is received, the policy processor checks for the voice identity mapping policy associated with the voice identity. The call is then forwarded to the target voice identity in the voice identity mapping policy.