User Guide SIP-T28P IP Phone
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receiving the RTP multicast.
6.
Click Confirm to accept the change.
Note
Music on hold (MOH) is the business practice of playing recorded music to fill the
silence that would be heard by the callers who have been placed on hold. To use this
feature, you should specify a SIP URI pointing to a Music on Hold Server account, when
placing a call on hold, the phone will invite this SIP URI to the Music on Hold Server
account. The Music on Hold account automatically answers to the SIP INVITE messages
and immediately plays audio from some source located anywhere (LAN, Internet) to the
held party. Contact your system administrator for the SIP URI.
To configure music on hold server via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced>>.
4.
Enter the SIP URI in the Music on Hold Server field.
5.
Click Confirm to accept the change.
When you have placed a call on hold, the held party can then hear the music.
Note
ACD feature is often used in offices for customer service, such as call center. The ACD
system handles large volumes of incoming calls from callers who have no need to talk
to a specific person but who require assistance from any of multiple persons at the
earliest opportunity. The ACD feature on the SIP-T28P IP phone allows the ACD system to
distribute calls from large volumes of incoming calls to the registered IP phone users. To
use this feature, you should configure an ACD key in advance.
To configure an ACD key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
The multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
The priorities of listening addresses are predefined: 1 with the highest priority, 10 with the
lowest priority.
Both the multicast paging sender and the receiver will play a warning tone when
pressing the multicast paging key.
All involved parties cannot use encrypted RTP (SRTP).
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