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performed as outlined in "Mapping of treatments to cause values" in Chapter
5, "Call control procedures."
Invalid status—If the status of the authcode is temporarily invalid, treatment
TEMPORARILY INVALID is applied to the call. If necessary,
treatment-to-cause mapping is performed. If the status of the authcode is
permanently invalid, treatment INVALID AUTHCODE is applied to the
call. If necessary, treatment-to-cause mapping is performed.
Not global authcode—If the authcode is valid, but is not a global authcode
(as designated by an authcode parameter in table AUTHCODM), city code
screening occurs. This screening matches the city code in the authcode
database (table AUTHCODM) and the city code in table CALLATTR. If the
comparison fails, the call goes to invalid city code treatment (INCC) and
results in treatment-to-cause mapping.
Filed hotline numbers
The DMS-250 switch allows the option to file hotline numbers against a
subscriber's authcode. If an authcode is a "hotline," all calls originating on
that trunk group are automatically placed to a predetermined number without
the subscriber having to enter any digits. If there are hotline digits filed
against an authcode, any calls that originate with that authcode cause the
address digits from the Q.931 SETUP message to be replaced with the digits
filed against the authcode's hotline number. The hotline number is then used
for any necessary routing and screening.
However, if a call originates on a PRI with an authcode that has a filed
hotline number, that hotline number is used as the address digits for the call.
Due to the filed-only authcode restriction, all calls that originate on that
authcode result in the same address digits. The restriction and use of
authcode hotlines are the administrative responsibility of the operators of the
switch.
Security codes
Security codes are multidigit DTMF codes used as another level of
screening beyond the authcodes. Security codes are of variable length up to
four digits and are based on the authcode parameter SECURITY. These
DTMF digit codes are not supported as part of the dialing plan. If the
authcode filed against the call attribute specifies that security codes are
required, the security codes are ignored for incoming calls using that
authcode.
Calling line identification
The calling line identification number (calling number field of the SETUP
message) is not screened in any way. The calling number field, if present, is
captured into the call detail record (CDR) or private network record (PNR)
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
Feature interaction 7-35
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