Polycom MGC-50 Getting Started Manual page 41

The Add Span dialog box opens.
b. Define the following parameters:
Table 3-5: Add Span Dialog Box Options
Field
Circuit ID
Circuit Order
c. Once you have defined all the identification numbers click OK.
The Add Span dialog box closes and you are returned to the Spans
and Phones dialog box.
Chapter 3 - Initial System Configuration
Description
The Circuit Identification is a logical number used to
identify the span to the MGC Manager. This number
is later used to assign the span to the ISDN network
card.
Type any positive integer from 0 to 65535 to be used
as the circuit identification number in the MGC
Manager.
Note:
If other Network Services are already defined, make
sure to use numbers other than those already
assigned to the existing services.
The Circuit Order determines the order in which an
MCU uses the spans to dial out.
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