You can use Call Holding and switching between calls through the phone's menu (refer to the user manual for your mobile) of through network codes.
|Using the service with network codes|
|Rejecting anotther call (without hanging up)||Press
|Ending the first call and connecting with a second one||Press 1|
|Take a new call and keep the first one on hold||Press
|Switch between calls||Press 2|
Conditions of use
You will be notified of a new incoming call only if you
have activated the
Call Waiting service.
Activation and use of the Incoming Call Indication service is free for all O2 customers.