I've configured line keys of the SPA509G and SPA525G to speed dial an EXTERNAL PHONE NUMBER as follow:
The line key LED is green on both phones but unfortuanlty the speed dial is only working with the SPA525G. The SPA509G is doing nothing when pressing the key.
The dial plans for both phones are identical and I can't find any other difference in the configuration. Both phones are on the latest firmware level (7.4.3).
I tried with fnc=sd;usr=106 and it works on 525 but not on 504.
So on my 504, I added @$PROXY to the 106 so my 504 has fnc=sd;usr=106@$PROXY and that worked. I will write up this issue for dev asking why the difference between the 525 and 50x series. Thanks.