Sony Ericsson P910I User Manual page 63

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ALS settings (subscription dependent)
Use Alternate Line Service to make calls on two lines with
separate phone numbers. Some of the phone settings are used on
a per line basis. In most cases, the settings displayed apply to the
selected line. This is then indicated in the dialog title bar. In
other cases, the lines correspond to separate settings or tabs in
the dialogs.
To set the line tags
1. Select the dialog.
Edit line tags
2. Edit the names for line 1 and 2.
3. Tap .
Done
Phone 63