Sony 500 User Manual

If this function has been configured (ask your service 
personnel), you can prevent or allow a second call 
Æ page 46 from being signaled by automatic camp-on 
during an ongoing call.

N

Press the key shown.

Select and confirm the option shown

[1]

,

select and confirm the option shown

You can suppress the call waiting tone (every six se-
conds) for external calls. A one-time special dial tone 
then alerts you to the waiting call.

:

Open the idle menu 

Æ page 15.

Select and confirm the option shown.

:

Open the idle menu 

Æ page 15.

Select and confirm the option shown.

You can save your call partner’s station number for sub-
sequent redialing from the caller list 

Prerequisite: You are conducting a call.

Select and confirm the option shown.

#490=Call wait.term.off?

[1] "Differing display view in a HiPath 4000 environment (not for 

*490=Call wait.term.on?

Call waiting tone off?

Call waiting tone on?

Save number?