This morning I successfully upgraded the firmware on my Yealink T31P handset from 124.86.0.40 to the 124.86.0.75 as you suggested.
Checked that Nology-recommended changes to the DTMF type were still there.
Unfortunately no change: handset still doesn't recognise digits entered during a call.
Any...
I have a Yealink T31P IP Phone, making calls with no problem over a Vumatel fibre network with Telkom as ISP. However I cannot enter keypad numbers as menu choices.
Example of calling a medical aid: "Hello, this is ABC! Please enter 1 if you are a member, 2 if you would like to join, 3 if you...