M.6.3 Procedures applicable for signalling in a VPN context

For a call which is identified as a call in a VPN context (see M.4.1), clause 5 shall apply with the additions described in M.6.3.1 and M.6.3.2.

M.6.3.1 Call establishment from a physical PINX

M.6.3.2 Call establishment towards a physical PINX