Polycom Software 4.0.1 Manual De Usuario

Polycom® SoundStation® Duo Conference Phone User Guide

94

Emergency (for Group/Channel 25)—Broadcasts sent to Group/Channel 25 

are considered Emergency broadcasts. All phones receive Emergency 

broadcasts (even if Do Not Disturb is enabled), and play them immediately. By 

default, phones play Emergency broadcasts at the highest audio level. The 

audio level will return to normal for subsequent non-Emergency broadcasts.

Your phone may be enabled to operate in a broadcast mode called 

Push-to-Talk (PTT). In PTT mode, you broadcast messages on a specific 

channel. In order to send and receive PTT broadcasts on certain channels, you 

have to subscribe to those channels.
PTT broadcasts are collaborative: you can transmit messages and listen to 

replies.

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 noone responds within the waiting period, the channel closes.

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 

 on page 99). If you change your default channel, you’ll 

need to make sure you’re subscribed to that channel, or else the channel won’t 

be available when you initiate a PTT broadcast. To subscribe to a channel, see