I stumbled across your forum whilst figuring out how to get a pair of SMT-W5120 working with a 7100 system. I already have a handful of smt-i5220 and roughly 20 smt-i5210.
The comments over on this
thread have been super helpful; credit to the members there.
Having tweaked a few settings from that thread, the handsets are now failing with the error 'No Licence', which having checked on the 7100, indeed I have 0 permitted / 0 connected Wifi Phones in the licence screen.
A bit of searching later I've found this
site which seems to sell the appropriate keys. I also found this
site which claims to unlock all access for $250. I wondered if anyone else knew this to be legit?
I'm happy to take the punt on £40.00 but I am reluctant to just punch in the keys without any guidance. (Phone support subcontractor no longer in existence). I readily take backups etc when making config changes, but the risk of blindly adding/changing licence keys and bricking the system is a step too far.
I also do not have notes of the current keys we're running on, if I were to need to re-enter etc. Perhaps I can extract these somewhere?
Of course please do point me towards any existing threads on the topic, but a search for SMT-W5120 didn't provide any direct results.
Any help offered would be greatly appreciated.
All the best