M.6.3.1 Call establishment from a physical PINX

M.6.3.1.1 Call Request

M.6.3.1.2 Notification of interworking at the interface between a physical PINX and the public network

M.6.3.1.3 In-band information provided to the physical PINX at the originating interface

M.6.3.1.4 Call confirmation