Aastra Telecom 9480i CT - Manual (Page 254)

244 Model 9480i CT IP Phone User Guide
Additional Features
2. The "UPnP Mapping Lines" field is set to 0 by default. If required, change the setting to a
specific line by selecting a line from the list. Valid values are 0 through 10. The line you
select is the line that your remote phone uses to perform Universal Plug and Play on the
network you are connecting to.
3. Click to save your settings.