Polycom VVX 300 ユーザーズマニュアル

Polycom® VVX® 300 and 310 Business Media Phones User Guide 

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You can adjust the volume of PTT broadcasts while they play. During a broadcast, press one of 
the Volume keys, 

, to raise or lower the volume of the broadcast. 

If you adjust the volume of a non-emergency broadcast, your phone retains the adjusted volume 
for all subsequent non-emergency broadcasts. However, only system administrators can adjust 
the volume level of an Emergency broadcast. 

While you send a broadcast, you can pick up the handset, or press 

 or 

, and continue 

speaking. You can also press 

 to mute your audio so that the people receiving your 

broadcast won’t hear anything. This behavior is similar to a phone call. 

When you listen to a broadcast, you can pick up the handset, or press 

 or 

, and continue 

listening to the broadcast. 

If you press and hold Talk, your broadcast will automatically transmit on the default channel, 
Channel 1. If you want, you can change the default channel. 

1  Select Settings from Home view, and select Basic > Preferences > 

Paging/PTT Configuration > PTT Push to Talk. 

2  From the PTT Channel Configuration screen, select Default Channel, and select the 

number of the channel you want to use. 

You can subscribe to any channel that has been enabled by your administrator and appears in 
your channels list. When you subscribe to a channel, you can send and receive PTT broadcasts 
on that channel. 

1  Select Settings from Home view, and select Basic > Preferences > 

Paging/PTT Configuration > PTT Push to Talk. 

2  From the PTT Channel Configuration screen, select Channel Subscriptions. 

From the Channel Subscriptions screen, select the channel you want to subscribe to, and 
press Yes. By default, you’re subscribed to Channels 1, 24, and 25. 

The Accept While Busy option determines what happens when you’re in a call and receive a 
PTT broadcast. If you enable the option, a PTT broadcast will interrupt telephone calls and you’ll 
hear the audio of both the telephone call and the broadcast. If you disable the option, the