overhead bit मीनिंग इन हिंदी

The amount of data considered excludes protocol overhead bits as well as retransmitted data packets.
The DS1 line rate ( 2 digroups plus overhead bits ) is 1.544 Mbit / s, supporting 24 voice channels or their equivalent in other services.
The DS1 line rate ( 2 digroups plus overhead bits ) is 2.048 Mbit / s, supporting 30 voice channels or their equivalent in other services.
Because of the necessity for overhead bits, and justification bits to account for rate differences between sections of the network, each subsequent level has a capacity greater than would be expected from simply multiplying the lower level signal rate ( so for example E2 is 8.448 Mbit / s and not 8.192 Mbit / s as one might expect when multiplying the E1 rate by 4 ).
When an element of T-1 or ( DS3 signal level, the intermediate element receiving an errored signal replaces the errored channel data with a signal consisting of a valid DS-3 frame with the overhead bits ( the M-subframe alignments bits, M-frame alignment bits, and P bits ) with the payload set to a 1010 . . . sequence, the C bits all set to zero, and the X bits set to one.