From The Private Leased-Line Network Into The Private; Leased-Line Network - Aastra Ascotel IntelliGate A150 System Manual

System Functions and Features as of I7.9
5. 8. 3

From the private leased-line network into the private

leased-line network

A call from the private leased-line network will be routed on at the transit PINX in
accordance with the information of the PISN destination user.
If the transit PINX is located in the same region as the destination user, the phone
number's regional prefix will be truncated.
Fig. 98 Transit routing from the private leased-line network to another PISN user
220 Call routing