APPARATUS AND METHOD FOR LIMITING JITTER CAUSED BY POINTER MOVEMENT

摘要

Jitter is limited in the mapping of a first telecommunications signal into a second telecommunications signal moving in a first direction, generating a compensative payload pointer movement of the first telecommunications signal in a second direction which is opposite the first direction. The invention has a particular application to the mapping of three E3 (490a-1 to 490a-3) telecommunications signals which are in the format of a TUG-3 signal into an STS-3C SONET telecommunications signal in the STM-1 VC-4 format. When the STS3C signal requires a pointer movement due to frequency compensation in the system, a compensative pointer movement at the TUG-3 level avoids eight units of jitter in the TUG-3 signal which could adversely affect system performance.