ITU Q.50.2:2002
ITU Q.50.2:2002 Signalling Between International Switching Centres (isc) And Digital Circuit Multiplication Equipment (dcme) Including The Control Of Compression/decompression Over An Ip Network Describes a signalling interface between an International Switching Centre (ISC) and a Digital Circuit Multiplication Equipment (DCME) that has the additional (compared to ITU-T Rec. Q.50) capability