P u s h t o t a l kCopyright © 2006 Nokia. All rights reserved. 6714. Push to talkSelect Menu > Push to talk.Push to talk (PTT) over cellular is atwo-way radio service available overa GPRS cellular network (networkservice).You can use PTT to have aconversation with one person or witha group of people (channel) havingcompatible devices. While you areconnected to the PTT service, you canuse the other functions of the phone.To check availability and costs, andto subscribe to the service, contactyour network operator. Roamingservices may be more limited thanfor normal calls.Before you can use the PTT service,you must define the required PTTservice settings. See ”PTT settings”p. 71 and ”Configuration settings”p. 72.■ Push to talk channelsA PTT channel comprises a group ofpeople (for example, friends or aworkteam) who joined the channelafter they where invited to. Whenyou call a channel, all membersjoined to the channel hear the callsimultaneously.There are different types of PTTchannels:Public channel — Every channelmember can invite other persons.Private channel — Only personswhich receive an invitation by thechannel creator can join in.Provisioned channel — A permanentchannel is created by the serviceprovider.You can set the status of eachchannel to Active or Inactive.The number of active channels andthe number of members per channelis limited. Contact your serviceprovider for details.Create a channelTo add a channel, select Menu >Push to talk > Add channel and enterthe settings in the form fields:Channel name: — Enter a name forthe new channel.Channel status: — Select Active toset the channel active, or Inactive todisable the channel.Nickname in channel: — Enter yournick name to be shown the newchannel.