Multiplex communications – Wide area network – Packet switching
Patent
1994-06-03
1995-12-05
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
3701053, 3701101, 375118, H04J 307
Patent
active
054736110
ABSTRACT:
Jitter is limited in the mapping of a first telecommunications signal into a second telecommunications signal, by, upon receiving an indication that the payload pointer of the second telecommunications signal is 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 particular application to the mapping of three E3 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 STS-3C 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.
REFERENCES:
patent: 5210745 (1993-05-01), Guinand et al.
patent: 5287360 (1994-02-01), Regent
patent: 5331641 (1994-07-01), Parruck et al.
patent: 5343476 (1994-08-01), Urbansky
SONET: Now It's the Standard Optical Network, IEEE Communications Magazine, Mar. 1989, pp. 8-13.
Gilboa Paz
Ng Tat K.
ECI Telecom
Gordon David P.
Olms Douglas W.
Rao Seema S.
TranSwitch Corporation
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