Option 11: phone mod 2, Range = 00-10 (default = 00), Press add – GE 60-883-95R User Manual

Page 16: Press option, Press 1, then 1 again, Enter a phone mod 2 using the numbered buttons, Press done, Table 3: phone mod 2 settings, Range = 08-10 (default = 10), Press 1, then 2