That won't fly.
make life easy & change ring cycle....
MORE THAN 4 RINGS
It's cofigured via the RCO (0, 1 or 2)prompt on the set.
The RCO prompt is related to the CFN0, CFN1, CFN2 and the DFN0, DFN1, DFN2.
If CFN2 and DFN2 are configured with a 9 and your set has configured with RCO 2 your phone is going to your voicemail after 9 rings
CFN0
CFN1
CFN2
DFN0
DFN1
DFN2
Mato' Was'aka