Polycom SoundPoint IP 450 User Manual page 71

Sending and Receiving PTT Broadcasts
To send and receive PTT broadcasts, you need to subscribe to certain channels.
By default, you're subscribed to Channels 1, 24 (the Priority channel), and
25 (the Emergency channel). This means that:
• You can send PTT broadcasts on Channels 1, 24, and 25.
• You'll receive PTT broadcasts sent on Channels 1, 24, and 25.
When you end a PTT broadcast, the channel remains open and enters a waiting
period. This waiting period gives people who received the broadcast a chance
to respond. If no one responds within the waiting period, the channel closes.
Sending PTT Broadcasts
If you send a PTT broadcast without specifying a channel, it's automatically
transmitted on the default channel. Channel 1 is the default channel that all
broadcasts transmit on, if no channel is specified for a broadcast.
You can change your default channel to any channel you want (see
the Default Channel on page 64). If you change your default channel, you'll
become subscribed to that channel automatically. To subscribe to a channel,
see Updating Channel Subscriptions
To send a PTT broadcast:
Press the Talk soft key to select a channel to broadcast on.
1
To automatically send a PTT broadcast on the default channel, press and hold the
Talk soft key, and then go to step 4.
Using the Advanced Features of Your Phone
on page 65).
Updating
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