BLF button to enable/disable calling the app

[WaveVoIP]

I am wanting to know if there is a way to set one of the BLF buttons on a Yealink T54w to either enable or disable calling the phone app for that phones extension. I have a customer that has calling the phone app disabled when they are at their office so both their desk phone and cell phone don't ring at the same time. But, they have an issue with remembering to turn calling the app back on when they are leaving the office for meetings or service calls. I think it would be easier for them if there was a BLF button on their desk phone that would show green / red status when the setting is enabled / disabled. That way they could always see it in view of them and can easily press the one button when they enter or leave the office.

[Vodia PBX]

IMHO the easiest way to do that would be to set up a service flag. It might be a service flag specifically for that extension, but you can use access that in the redirection settings for the extension and allow the app only when the service flag is on.