Polycom MGC Administrator Administrator's Manual page 78

Chapter 3 - Defining Network Services
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7. Enter Circuit ID numbers for each span, as per PRI lines.
The Circuit Order is assigned automatically by the system according to the order
in which the spans are added.
You can change the span order (if there are several spans defined in the system)
using the Set Before or Set After buttons. These buttons are enabled when the
NFAS option was enabled in the Settings dialog box and you define several PRI
spans to be used as part of the NFAS service.
To do so:
• Click the name of a circuit in the Circuits Order list, which is to be adjacent to
the circuit you are defining.
The circuit's entry is highlighted.
•
To insert the new circuit, do one of the following:
•
Click Set Before to insert the new circuit before the highlighted entry.
•
Click Set After to insert the new circuit after the highlighted entry.
8. In the NFAS ID box, enter the NFAS ID number for the span that you are
defining.
9. Select the Master or Slave option, which is applicable to the span that
you are defining.
— Master - The D-channel of the first PRI line that will be used to
control the data flow for all the PRI lines bundled as NFAS.
— Slave - The PRI line that is used for data transfer (audio and video
information), increasing the line rate that can be used to run
conferences.
•
There are certain limitations when using a Net-8 card. The first number should
be that of the Master, and is always 0. The order in which you define the
remaining PRI lines (the Slaves) determines the order in which the lines will be
used for running conferences. The NFAS ID number of the first Slave is 1. The
ID numbers for each successive PRI line that is added as a Slave is
sequentially increased by 1.
•
If you are using a Net-T1 card, the NFAS ID number that you allocate to the
Master and Slave PRI lines is not important. It is however recommended that
you enter 0 for the Master and increase this number by one sequentially, for
every additional Slave that you define.
•
The ID numbers assigned to each span must be identical to the ID numbers
configured on the switch in order for the system to recognize the data flow on
each channel.