Telematrix LP550 - Manual (Page 8)

The LP550 telephone can only operate behind a
PBX. They cannot be connected directly to the
PSTN. Direct connection to the PSTN is illegal
and unauthorized. Please call if there are any
questions.
The LP550 telephone can only operate behind a PBX. They cannot be connected directly to the PSTN.
Direct connection to the PSTN is illegal and unauthorized. Please call if there are any questions.