Indication about Optimux special behavior: pointToPoint(2): regular operation mode (Point to Point). ring(3): this optimux is part of a ring. operations made on this device may affect other optimuxes in the Ring and vice versa. drop(4): enables connection between T3 tributary channel and physical E1/T1 port. In this mode there may be no connection between this Optimux and another Optimux While working in this mode optimux CANNOT be in PTP or Ring topology. radioRing(5): this optimux is part of a ring that may use one or more Radio Links. Operations made on this device may affect other optimuxes in the Ring and vice versa.