7-8 Feature interaction
297-2521-106 Standard 23.01 March 2001
Table 7-2
PTS origination to PRI NSF mapping
Factors for assigning NSF
NSF
Assigned if originating PTS call generates a PNR.
Incoming address digits and pretranslations are not a
factor.
VNET (00001)
Assigned if originating PTS is translated as either ES
INWATS or SACREMOT and the call generates a CDR at
the originating switch.
800 (00010)
900 (10000)
Assigned for all other call types that are not PRIVATE,
800, or 900.
PRISM (00011)
—end—
Translation and routing options
The DMS-250 switch offers two options for processing incoming PRI calls:
IEC translation and routing (XLAIEC) and direct ISA route reference
routing (ISA RTEREF). The assignment of a call to either XLAIEC or ISA
RTEREF is based on call type. Assignment based on call type provides the
possibility of mixing the two methods over a PRI interface. For example,
VNET calls can be processed with IEC translations (omit RTEREF field)
and PRISM calls can be processed using ISA direct routing (RTEREF).
Figure 7-4 shows a comparison of XLAIEC and ISA RTEREF and RTEREF
direct routing after authcode screening occurs.
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