OMS 3250

OMS3250Product Description4 MAPPING & MULTIPLEXING FUNCTIONSThe Mapping and Multiplexing functions provide the capability of mapping, aligning andmultiplexing bi-directional logical channels between the SDH physical interfaces. TheMultiplexing structure used in the equipment is according to ETSI ETS 300 147 and ITU-TG.707.OMS3250 can support the concatenation of up to sixty-four (64) contiguous AU-4s according toG.707, using concatenation indication.OMS3250 also supports the concatenation of four or sixteen (4/16) contiguous AU-4s, byconverting them into virtual concatenated AU-4s using the STM16/STM-4 contiguous to virtualconversion card (both VC-4-4c and VC-4-16c Contiguous to Virtual conversion are supported).The STM-16/4 C/V card, that uses hot-pluggable optical transceivers, can be configured as:• 1xSTM-16 AU4-16c/16v or AU4-4c/4v converter;• 4xSTM-4 AU4-4c/4v converter.The use of this unit at the edge of a network permits a VC-4-4c/16c service to be provided evenif the network doesn't support the routing of VC-4-4c/16c containers.OMS3250 also allows the mapping of client signals over ODU according to G.709 and ODUmultiplexing according to G.709.SONET transport over SDH can be supported, ie STS-3c carried as AU-4, STS-12c carried asAU-4-4c, STS-48c carried as AU-4-16c and STS-192c carried as AU-4-64c. The SS bits in theAU-4 pointer can be configured to support this. Note, however, that AU-3/TU-3 conversion is notsupported.Issue 1 Copyright – Refer to Page 2 Page 29 of 74