bit robbing Referring to the process in a channel bank or T1 time division multiplexer (TDM) whereby the least significant bit (LSB) in a byte is robbed and a signaling bit is inserted, thereby truncating the eight-bit voice sample to seven bits. Bit robbing does not affect the quality of pulse-code modulated (PCM) voice, as seven bits are quite satisfactory for reconstructing a high-quality approximation of the 74570c02.qxd 9/11/07 12:18 PM Page 63 |