Nokia 7500 Prism User Guide - Page 56

Push to talk To check availability, costs, additional features and to subscribe to the service, contact your service provider. Roaming services may be more limited than for normal calls. This feature may not be available, depending on your phone. Before you can use the PTT service, you must define the required PTT service settings. See "PTT settings," p. 58. See "Configuration settings," p. 59. PTT channels PTT channel types A PTT channel comprises a group of people (for example, friends or a work team) who joined the channel after they were invited. When you call a channel, all members joined to the channel hear the call simultaneously. In a Public channel, every channel member can invite other persons; in a Private channel, only the channel creator can invite others. You can set the status of each channel to Active or Inactive. The number of active channels and the number of members per channel is limited. Contact your service provider for details. Create a channel To add a channel, select Menu > Push to talk > Add channel, and enter the settings in the form fields. To send an invitation to the channel, select Yes. To send further invitations, select Menu > Push to talk > Channel list, a channel, and Options > Send invitation. Switch PTT on and off To connect to the PTT service, select Menu > Push to talk > Switch PTT on. indicates the PTT connection. indicates that the service is temporarily unavailable. If you have added channels to the phone, you are automatically joined to the active channels. To disconnect from the PTT service, select Switch PTT off. You may assign a default function to the PTT (volume up) key to open the channel list, the contacts list, or a single channel or contact. See "PTT settings," p. 58. Make and receive a PTT call Warning: Do not hold the device near your ear when the loudspeaker is in use, because the volume may be extremely loud. 56 © 2007 Nokia. All rights reserved.