If you keep your telkom phone line, you still pay line rental of R180. (or whatever it costs)
You can have your Telkom enabled on your Fibre router, but apparently you HAVE to be with Telkom then. ISPAfrica can't do this.
Why can't we have VOIP for the visitors intercom? Our complex also have an intercom where visitors phone our land lines. They can link it to a cell phone, so surely VOIP works fine?
I went through this whole story with my complex, which may apply to VOIP numbers (although I'm not 100% sure).
I had a number that had to be added to the intercom, and was told it wasn't possible. After a month of fighting, I discovered the intercom system has a number of phone number "prefixes" that are stored, such as 021, 082, 072, 079, etc. The system can only store x-number of prefixes before it is full. Without that prefix, they can't add your number to the system. In my case, they were simply too lazy to add a new prefix & therefore told me it couldn't be done. In the end, they added my number after a little work from their side. I would imagine that it might complicate things if your system's prefix storage is already full.
That could be what's happening here, but no guarantees...