Description: The Quantum Bridge VT cross-connection (VT to VT) table contains all point-to-point cross-connections between various VTs that are provisoned at OAS STS-3 Sonet interfaces. The STS-3 interfaces are listed in the sonetMediumTable(RFC2558) as interfaces with the 'sonetMediumType' object set to sonet(1). The table is indexed by four indexes: low interface interface index,low vt identifiers, high interface index, and high vt identifier. The terms low and high are chosen to represent numerical ordering of two interfaces/vt within VT cross-connect.