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Advanced Phone Features

103

Mute is disabled, the microphone works for intercom calls. Intercom Mute is disabled by

default.

Intercom Tone

You can enable or disable the phone to play a warning tone when receiving an

intercom call. If Intercom Tone is enabled, the phone plays a warning tone before

answering the intercom call. If Intercom Tone is disabled, the phone automatically

answers the intercom call without warning. Intercom Tone is enabled by default.

Intercom Barge

You can enable or disable the phone to automatically answer an incoming intercom call

while there is already an active call on the phone. If Intercom Barge is enabled, the

phone automatically answers the intercom call and places the active call on hold. If

Intercom Barge is disabled, the phone handles an incoming intercom call like a waiting

call. Intercom Barge is disabled by default.

You can use multicast paging to quickly and easily forward time sensitive

announcements out to people within the multicast group. You can configure a multicast

paging key on the phone, which allows you to send a Real Time Transport Protocol (RTP)

stream to the pre-configured multicast address(es) without involving SIP signaling. You

can configure the phone to receive an RTP stream from pre-configured multicast

listening address(es) without involving SIP signaling. You can specify up to 10 multicast

listening addresses.

To configure a multicast paging key via phone user interface:

1. Press Menu->Features->DSS Keys.

2. Select the desired DSS key.

3. Press or , or the Switch soft key to select Key Event from the Type field.

4. Press or , or the Switch soft key to select Multicast Paging from the Key

Type field.

5. Enter the multicast IP address and port (e.g., 224.5.6.20:10008) in the Value field.

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Yealink SIP-T21 Manuel d'utilisateur Page 113