The utility model aims to provide the
elevator optical fiber IP network talkback conversion device which has a
snowflake-shaped structure, is high in expansibility, high in line
utilization rate and high in reliability, and can reduce the management cost and reduce the burden of a
central node. The
system comprises a general area IP duty room host, a duty room host, a
data conversion module, a plurality of
optical fiber concentrators, an optical
transceiver and an
elevator interphone, one end of the
data conversion module is connected to the plurality of
optical fiber concentrators in a doubling mode, and the other end of the
data conversion module is connected to the duty room host; one end of the optical
fiber hub is connected with the optical
transceiver, the other end of the optical
fiber hub can expand the optical
fiber hub through doubling, the optical
transceiver is connected with the
elevator interphone, and the general area IP duty room host communicates with the data conversion module through a
local area network. The
dialer intercom system is applied to the technical field of
dialer intercom systems.