Number Portability can be completed only if you have the migration code provided by the telephone operator for line, and if there is only one number on a traditional analog or single ISDN line. In both cases, there cannot be an ADSL line present on the line, either contractually or physically.
It is also necessary that the request be made by the subscriber of the line. All invoices for the line to be transferred must be paid up.
Providing exact information is the best guarantee for fast, trouble-free number portability.
When the number is transferred to Messagenet, the customer loses all additional services connected with the line.