Polycom MGC Administrator Administrator's Manual page 169

10. Click Next.
The Spans and Phones dialog box opens.
This dialog box is used to assign identification number to the spans used
by the service provider. For more details, see "Spans and Phones Dialog
Box" on page 3-14.
11. Click the Plus
The New ATM Span dialog box opens.
button in the Spans pane to define the ATM span.
MGC Administrator's Guide
3-119