Grandstream 2 upper left BLFs

[NDGsystems]

I searched the forum and documentation but could not find a clear answer for this:
Is there a way to use the upper left two BLFs as a speed dial on a Grandstream 2140?
It seems that these are automatically set as line fields. https://www.3cx.com/sip-phones/busy-lamp-field-dss-keys/

Note that when the 3CX Client is used in CTI mode (legacy CTI), BLFs set as Line keys are mandatory on position 1 and 2! If you are using the Web client they may be placed anywhere or omitted.

My clients have no use for line availability, and are asking me to use these keys as any other key.
IMO the way it is displayed on the phones looks like a system bug as there is no use for them with SIP trunks.

Thank you for any help.

Yoram

 

[Saqqara]

The first two blf keys have to be line keys - check known limitations https://www.3cx.com/sip-phones/grandstream-gxp21-series/

 

[NDGsystems]

Thank you for the quick reply