A read-only enumerated value indicating whether this HDSL bit pump is configured as the central office side or the remote, customer, side of the link. An admin needs both ends of an HDSL pair configured with complementary roles, so checking this value confirms the modem is playing its intended role in the central-to-remote link. If a modem that should be acting as the remote end instead reports cmHDSLModemType as central, the admin would recognize a configuration mismatch preventing the pair from training correctly.