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7-8 Feature interaction
Table 7-2
PTS origination to PRI NSF mapping
Factors for assigning NSF
Assigned if originating PTS call generates a PNR.
Incoming address digits and pretranslations are not a
factor.
Assigned if originating PTS is translated as either ES
INWATS or SACREMOT and the call generates a CDR at
the originating switch.
Assigned for all other call types that are not PRIVATE,
800, or 900.
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.
297-2521-106 Standard 23.01 March 2001
—end—
NSF
VNET (00001)
800 (00010)
900 (10000)
PRISM (00011)
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