OMS 3250

Product DescriptionOMS32507 CONNECTION SUBSYSTEMThe OMS3250 connection features, performed by the switching subsystem, are provided byHPC function, as defined by ITU-T G.783 Recommendation, allowing cross-connections at thefollowing levels (as defined by ETSI):• VC-4• VC-4-4c (direct support or Contiguous to Virtual conversion)• VC-4-16c (direct support or Contiguous to Virtual conversion)• VC-4-64c (direct support)and also ODU cross-connections at the following levels:• ODU1• ODU2The switch unit consists of 4 cards (Master plus Slaves 1, 2 and 3) as illustrated in the figurebelow.SwitchMaster Slave 1Slave 2 Slave 3||||Slot withSTM-64Bandwidtheach connection is4 x 622Mb/sor1 x 2.5Gb/sFigure 8: Transmission of payload to switch via the backplaneThe switch can be duplicated for protection. The OMS3250 architecture allows up to 320Gbit/s(2048 x VC-4) physical connectivity to the switch plane.The basic functions of the OMS3250 switching subsystem are:NON-BLOCKING:The probability that a particular connection request cannotbe met is 0Page 34 of 74 Copyright – Refer to Page 2 Issue 1