Polycom DOC2551A manual Field Description

Field	Description
Span Type	Select the type of spans (ISDN/PSTN) lines,
	supplied by the service provider, that are connected
	to the RMX. Each span can be defined as a
	separate Network Service, or all the spans from the
	same carrier can be defined as part of the same
	Network Service.
	Select either:
	• T1 (U.S. – 23 B channels + 1 D channel)
	• E1 (Europe – 30 B channels + 1 D channel)
	Default: T1
	Note: Only one Span Type (E1 or T1) is supported
	on the RMX. If you define the first span as type E1
	all other spans that you may later define must also
	be of type E1.
Service Type	PRI is the only supported service type. It is
	automatically selected.

18Click Next.

19In the PRI Settings dialog box, define the following parameters:

Field	Description
Default Num Type	Select the Default Num Type from the list.
	The Num Type defines how the system handles the
	dialing digits. For example, if you type eight dialing
	digits, the Num Type defines whether this number is
	national or international.
	If the PRI lines are connected to the RMX via a
	network switch, the selection of the Num Type is used
	to route the call to a specific PRI line. If you want the
	network to interpret the dialing digits for routing the
	call, select Unknown.
	Default: Unknown
	Note: For E1 spans, this parameter is set by the
	system.

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