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Advanced Operational Features
6-10 41-001343-02 REV04 – 05.2014
Configuring Single Call Restriction
Missed Call Summary Subscription
The “Missed Call Summary Subscription” feature allows missed calls that have been redirected by the server, to be
incremented in the missed calls indicator on the phone it was initially directed to. This feature is called the Missed Call
Summary Subscription and can be set with a timer that allows the phone to use the feature for a period of time before
the timer expires. For this feature to work, you must configure voicemail on the phone that the call was initially directed
to.
For example, phones A, B, and C are connected to the server. You configure the server to direct calls coming into phone B
(which has voicemail configured) to be forwarded to phone C. When phone A calls phone B, the server forwards the call
to phone C. With this feature, phone B receives notification from the server that the call was forwarded and the missed
calls indicator is incremented on phone B.
An Administrator can configure this feature on a global or per-line basis using the configuration files.
Configuration Files
For the specific parameters you can set in the configuration files for single call restriction on the 6757i CT and 9480i CT, see Appendix A, the section,
“Single Call Restriction Setting” on pageA-206.
Aastra Web UI
1. Click on Advanced Settings->Global SIP->RTP Settings.
2. Enable the "Two Call Support" field by checking the check box.
(Disable this field by unchecking the box).
3. Click Save Settings to save your settings.
Note:
The session prompts you to restart the IP phone to apply the configuration settings.
4. Select Operation->Reset and click Restart.
Missed calls indicator increments on phone B.
Note: Voicemail must be configured on phone B