Altigen AltiWare ACM 5.2 Administration Manual page 241

Figure 4. Changing a virtual extension to a physical extension and setting the location
3. By clicking the Next or Prev button in the Location panel, select the MobileExt
Logical Board ID and Logical Channel ID for this extension, then click Apply.
The new location is displayed in the Extension View window.
4. With the extension selected, click the Line Properties button to configure the
mobile PSTN number and other options for this mobile extension.
The ExtensionAnywhere Configuration - MobileExt dialog box opens.
Chapter 18: Mobile Extension Configuration
AltiWare ACM 5.2 Administration Manual 229