This calling feature is described, but when I go to manage my calling features it's not available to add.
I currently have Home Phone + 6 Calling feature bundle, but only have 4 selected.
The old Call Forward No Answer feature for home landlines was only designed to forward to one specific number only and that number would have had to be been set by Telus when the feature was first added. It is typically the voicemail access number.
Call Forward Fixed/Variable would have forwarded to a single number of your choosing but it would not ring the home phone first, nor would it try ringing a second alternate number.
For a follow me type feature, I'm not sure if there was ever a solution for a residential landline. I suspect for the business side of things there may have been but I'm not familiar with the current business solutions.
The big thing to keep in mind is that copper based phone service is being phased out. I can't see landline providers in general paying to add new functionality to the old analog copper systems. The new fibre based phone service is more akin to VoIP so it's possible there may be new functionality added in the future as more lines / areas are migrated over.
“Landline companies could slow the decline of subscribers by implementing some of the features available on voip systems.”
Yes, but the telcos have been restricted in what they can offer to allow VoIP providers to build a customer base. If a VoIP solution meets your needs, then make the switch, however, I doubt many callers will wait on the line through 9 to 12 ring cycles to arrive at your voicemail. Maybe an answering service would be a better choice.