Abstract: In a system where a first telecommunications signal is mapped into a second telecommunications signal, where a FIFO is used to store first signal data bits which are being mapped into the second signal, and the number of bits stored in the FIFO (i.e., FIFO "depth") is used in determining whether to generate a stuff or destuff signal, jitter is partially limited by, upon receiving an indication that the payload pointer of the second signal is moving in a first direction, generating a compensative payload pointer movement of the first signal in a second direction which is opposite the first direction. Additional jitter is removed by suspending the FIFO measurement from the time of the pointer movement in the second telecommunications signal until after the pointer movement and byte stuff or byte destuff in the first telecommunications signal has been accomplished, at which time the FIFO measurement resumes.