This read-write INTEGER describes characteristics unique to the attached CPE, such as line polarity, di-bit ordering, and pre-activation signaling, with the specific code for a given manufacturer's CPE assigned and distributed by Copper Mountain Networks. An admin sets this to match the actual CPE model deployed at the customer's premises so the head end can interoperate with it correctly. For example, entering the wrong CPE code for a newly installed modem could prevent the line from training even though the wiring and equipment are otherwise fine.