Frame synchronization: While receiving a stream of frameddata, frame synchronization is the process by which incoming frame alignment signals, i.e., distinctive bit sequences (a syncword), are identified, i.e., distinguished from data bits, permitting the data bits within the frame to be extracted for decoding or retransmission. This is sometimes referred to as "framing". In telecommunications, a frame is a packet which has been encoded for transmission over a particular link. ... For other uses, see Data (disambiguation). ... This article is about the unit of information. ... In computing a syncword is used to synchronize data. ...
A common practice is to insert, in a dedicated time slot within the frame, a noninformation bit that is used for the actual synchronization of the incoming data with the receiver. Time Division Multiple Access (TDMA) is a technology for shared medium (usually radio) networks. ... Synchronization (or Sync) is a problem in timekeeping which requires the coordination of events to operate a system in unison. ...
If the transmission is temporarily interrupted, or a bit slip event occurs, the receiver must re-synchronize. In digital transmission, Bit slip is the loss of a bit or bits, caused by variations in the respective clock rates of the transmitting and receiving devices. ...
Framesynchronization is necessary to identify the timeslots within each 24-channel frame.
Terminal frame alignment channel is carried in odd-numbered frames inside the super frame and occurs with the DS0 channel synchronization.
Signaling frames are identified by the framing signal's transition from 1 to 0 and from 0 to 1; thereby frames six and twelve carry signaling information.
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