In terms of numbers being ported with ADSL functionality, Telkom has 72 hours to activate the replacement ADSL number; therefore, your ADSL could be disconnected during this time.
You will need to state that you would like to keep the ADSL functionality should you be porting a number associated with an ADSL line.
When a line is cancelled, all Telkom services (i.e. ADSL) running over that line are also cancelled unless you have stated that you wish to keep the additional functionality. This will be confirmed on the Port Application Authorisation Letter. Our Porting Department will then request that Telkom assign a new number for the ADSL if you have chosen to keep the ADSL functionality.