This object defines the Clear FWD Signal (A,B,C,D bits) for KVF.6 cards. This object is an indication of Near PBX to the Far PBX, taht a call is present now on the line. Applicable only if Disconnect Supervision (mdlDs) is different from disable. Applicable only for KVF.6 cards. It represents 4 parameters, by an Octet: ( Bit 7 = MSB, Bit 0 = LSB ) D Bit - bits 6,7 of the MSB nibble, C Bit - bits 4,5 of the MSB nibble, B Bit - bits 2,3 of the LSB nibble, A Bit - bits 0,1 of the LSB nibble. For each of A,B,C,D Bits: 00 = 0, 01 = 1, 10 = reserved, 11 = x. For A,B Bits - only one of them can be 'x' (not both at the same time). For C,D Bits - 'x' won't be in use. When the object is not applicable, a 0 Octet will be sent.