Ericsson 50 - Manual (Page 61)

PROGRAMMING
59
BusinessPhone 250 / BusinessPhone 50
Standard Telephone / Economyplus Telephone
Select ringing character
Select ringing character (0-4)
See section ”Function codes and required data”.
Press the programmable key again
Press to finish programming
After approximately 10 seconds, the function key is active.
Example : Program supervision of extension 204 on key A, with ringing
character 1. For available function codes, see section
”Function codes and required data”.
Enter programming mode
Press the desired programmable key
Select the function code for supervision
Press the programmable key again
Enter extension number
Press the programmable key again
Press to select ringing character
Press the programmable key again
Press to finish programming