Aastra Telecom SIP 57I - Manual (Page 154)

Network Settings
4-30 41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Configuring the IP Phones
.
Aastra Web UI
Step Action
1 Click on Advanced Settings->Network->Advanced Network Settings .
2 The “UPnP” field is disabled by default. To enable UPnP, place a check in the “Enabled” box.
Uncheck the box to disable this field. This field enables and disable UPnP on the IP phone.
3 Click to save your settings.