Specifies the signalling protocol for the support of calling and connected name identification supplementary services at the Q reference point between private integrated services network exchanges connected together within a private integrated services network. The Q reference point is defined in AS/NZS 4136.1:1995. This Interim Standard is one of a series of Standards applicable to private integrated services networking. This Interim Standard is identical with and reproduced from ISO/IEC DIS 13868.