Polycom RealPresence 4000 Installation And Configuration Manual page 12

16 Define the following parameters:
Field
Network Service
Name
Span Type
Service Type
17 Click Next.
18 In the PRI Settings dialog box, define the following parameters:
Field
Default Num
Type
12
Description
Specify the service provider's (carrier) name or any other
name you choose, using up to 20 characters. The
Network Service Name identifies the ISDN/PSTN Service
to the system.
Default name: ISDN/PSTN Service
Note: This field is displayed in all ISDN/PSTN Network
Properties tabs and can contain character sets that use
Unicode encoding.
Select the type of spans (ISDN/PSTN) lines that are
connected to the RMX. Select either: T1 or E1
Default: T1
Note: Only one Span Type (E1 or T1) is supported on the
RMX.
PRI is the only supported service type. It is automatically
selected.
Description
Select the Default Num Type from the list.
The Num Type defines how the system handles the
dialing digits.
If the PRI lines are connected to the RMX via a network
switch, the Num Type is used to route the call to a
specific PRI line.To let the network interpret the dialing
digits for call routing, select Unknown (Default).
For E1 spans, this parameter is set by the system.