Local Automatic Message Accounting

Local Automatic Message Accounting (LAMA) is a method of billing for long distance calls where the billing records are created and stored at the same central office that the call originated from. This is in contrast to CAMA, where the call records are sent elsewhere for storage.

LAMA was first introduced in a step by step office Los Angeles in the 1941. LAMA was then re-introduced in an improved form with the No. 5 Crossbar switch in the late 1940s. LAMA was subsequently outfitted into the No. 1 Crossbar and Panel in the late 1950s.