P u s h t o t a l k84When you press and hold the PTT (volume up) key while the caller istalking, you hear a queuing tone, and Queuing is displayed. Press andhold the PTT (volume up) key, and wait for the other person to finish;then you can talk immediately.■ Callback requestsIf you make a one-to-one call and do not get a response, you cansend a request for the person to call you back.Send a callback requestYou can send a callback request in the following ways:To send a callback request from the contacts list in the Push to talkmenu, select Contacts list. Scroll to a contact, and select Options >Send PTT callback.To send a callback request from Contacts, search for the desiredcontact, and select Details. Scroll to the PTT address, and selectOptions > Send PTT callback.To send a callback request from the channel list in the PTT menu,select Channel list, and scroll to the desired channel. Select Members,scroll to the desired contact, and select Options > Send PTT callback.To send a callback request from the callback request list in the Push totalk menu, select Callback inbox. Scroll to a contact, and selectOptions > Send PTT callback.Respond to a callback requestWhen someone sends you a callback request, Callback request receivedis displayed in the standby mode.To open the Callback inbox, select View. The list of nicknames of thepersons who have sent you callback requests is shown.To make a one-to-one call, select the desired request and press andhold the PTT (volume up) key.To send a call request back to the sender, select Options > Send PTTcallback.