Holding 0 on Grandstream 2135 and 2170 results in a + symbol


#1

When I press and hold 0 on my 2135 or my 2170, the phone converts the 0 to a + symbol.

Is there any way to disable this function?


#2

Forgot to mention.

  • symbol is generated when holding 0 on both firmware versions:
    1.0.9.69
    and
    1.0.7.97

#3

I took a look at the template and I do not think I find anything about it


#4

Out of curiosity, why would you need to hold the key down?