Aastra 6755i User Manual page 244

1. Click on Basic Settings->Preferences->Group Paging RTP Settings.
Group Paging RTP Settings
2. In the "Paging Listen Addresses" text box, enter the multicast IP address(es) and port
number on which the phone listens for incoming multicast RTP packets.
Enter the IP address in dotted decimal format.
(for example, 239.0.1.15:10000,239.0.1.20:15000)
You can enter up to 5 listening multicast addresses.
If this field is blank, the Paging Listening capability is disabled on the phone.
3. Click
236
Notes:
1. Recipient of a Paging call can set a global "Do Not Disturb" (DND) to ignore
any incoming pages.
2. For incoming Paging, the phone uses the Intercom configuration settings. The
incoming Page is dependant on the "Allow Barge-In" parameter setting and the
"Idling/On Call" state.
to save your settings.
Model 6755i IP Phone User Guide