You can only put on standby one connection at a time. The subscriber will hear a tune when waiting.

How to use the service?

If your receive another one call when talking to another person, you can:

ignore the tone and continue conversation;
end the current conversation and receive the new call;
if you want to switch to the call currently on standby, press the Accept Call button or dial “1” and call;
if you need to call to the second calling person without discontinuing the previous conversation, dial the phone number and press the Call button.

Putting a call on a hold and calling the other person

you are having a connected call;

enter the phone number of the person you want to talk to and press the Call button;
if your call is not answered or line is busy get back to the call put on a hold by dialing “1” and pressing the Call button;
if the other call is connected and you want to switch between two talks, the Call button or dial “2” and then press the Call button;
if you want to switch to the call put on a hold while having another connected call, press the Call button or dial “1” and then press the Call button.

Call waiting