I found a strange issue: I’ve programmed the Virtual Multi-Purpose Keys on the GXP 2170 all with Busy Lamp Fields. In this case I’ve added 12 BLF for 12 different Extensions. After doing this I realized that is was not possible to do a call anymore. When it is ringing and I pick up the phone - nothing happens. When I press one of the BLF keys, nothing happens. I pick up to dial a number - nothing happens. If I call the phone with another extension (internal call) I can see the BLF of the phone calling me becoming red but no ringing.
After some testing I realized that this happens as soon as I add any function to the VMP key no. 6. It does not matter what I add here. BLF, Speed Dial, DND… as soon as the key no. 6 is not free anymore the phone will stop working. On the other hand as soon as I reset key no. 6 it works.
Next I realized that there is another problem related to this: As soon as you use VMP key no. 5 you cannot use the “conference feature” (the conference key on the phone, not the call feature of the PBX) anymore. It is not possible to hold one call and call another extension or phonenumber.
So at the moment I need to keep no. 5 and no. 6 without function in order to use the phone.
STRANGE, isn’t it?
Anybody with the same problem or an idea?