Shared mobile service contract.
Shared mobile service contract. Shared mobile service contract means a mobile service contract for an account that includes not less than two lines of service, and does not include enterprise services offered by a covered provider. For purposes of this subpart, a line of service shall mean one that is associated with a telephone number, and includes all of the services associated with that line under the shared mobile service contract, regardless of classification, including voice, text, and data services.