When purchasing a new VHF you should apply to Innovation, Science and Economic Development Canada (ISED) - Spectrum Management and Operations Branch, to get an MMSI number that allows you to take advantage of all the DSC safety feature of a new VHF.
The links below will take you to ISED's web site, where you can submit your application for a MMSI Number.
Fixed Mount VHF Radios
Or
Handheld (portable) VHF Radios