A service feature for people that are connected to their
central office by a
digital trunk. Commonly used by large companies and 800/888/
900 number services. This service is similar to
caller ID, but often used for billing purposes. Data
packets are sent between the
CO and the
subscriber with the caller's
phone number. ANI 2 also contains information about the type of subscriber the caller is(ie:
POTS,
pay phone,
PBX, prison/inmate service,
cellular, etc.) ANI subscribers often receive
monthly statements of calls they recieved that month.
Often confused with
Automatic Number Announcement Circuit.