How does it Work
The smooth migration feature allows the new and the old system(s) to be operational during the transition period and simply move groups of users at a time.
The smooth migration feature changes the type of number from extension (EX) to external destination (ED) if a dialed extension number is found to be vacant. The call will then proceed to PNR, Private Network Routing and is routed to the other system over a tie-line.
The functionality in the MX-ONE Service Node is controlled by the command number_vacant_conversion_initiate.
Special patches are needed for MD110 BC11, BC12 and Mitel TSW systems. For further information, refer to the Release Notes available at the Mitel Knowledge Base.
The new system is installed using standard procedures, except that no user data is entered, i.e. all extensions and extension groups are initially vacant in the new system.
The systems are connected with intelligent tie-lines in order to provide a reasonable level of functionality between users in the different systems.
There are of course lots of possible scenarios, depending for example on the private network topology, if merge of several old systems into one larger new system is done, the mix of extension types, if there is a geographical move or not, and many other aspects, so a special planning is required from case to case. These operational direcÂtions can only give a brief example.