NEC DSX40 4-Port CO Card

NEC DSX40 Four Port CO/Trunk Card

DSX40 4-Port Trunk Incoming Line Card provides interface of up to 4 more incoming lines to an existing NEC DSX40 phones system.

The NEC DSX40 phone system can only be expanded to a maximum of 8 incoming lines.

The NEC DSX40 can only except only 1) 4-Port CO Trunk incoming line card.

THIS EXPANSION CARD IS COMPATIBLE WITH THE NEC DSX40 PHONE SYSTEM ONLY AND WILL NOT WORK WITH ANY OTHER PHONE SYSTEM.