M.6.3.2 Call establishment towards a physical PINX

M.6.3.2.1 Incoming call

M.6.3.2.2 Notification of interworking at the interface between a physical PINX and the public network

M.6.3.2.3 In-band information provided by the physical PINX at the destination interface

M.6.3.2.4 Call confirmation