Function: I/O
Models: R–2000i A/165F, 200F, 210F, 125L
Function: J123 OT
Function: ARP
Function: ARM
Function: AP (USER/POWER)
Models: R–2000i A/200FO, 130U
Function: DNS (SIGNAL)
Function: DNP (POWER)
Models: R–2000 A/200FO, 130U
Function: AS (USER/SIGNAL)
Models: R–2000i A/165R, 200R,100P