DMS-100 Toll-Free Service Screening Table (TFSSCRN) |
Table Name
Toll-Free Service Screening Table
Functional Description of Table TFSSCRN
Table TFSSCRN lists the toll-free numbers subject to Bellcore/Telcordia GR-2892 (Switching and Signaling Generic Requirements for Toll-Free Service Using AIN) processing. When a number encounters the Number Service Code (NSC) selector, a check is made to determine whether or not it is on the list. When the number is on the list, it bypasses Bellcore/Telcordia TR-533 (Database Services Service Switching Points - Toll-Free Service [E800]) processing and proceeds as an Advanced Intelligent Network (AIN) call.
Datafill Sequence & Implications
Table TRIGDIG (Trigger Digits) is datafilled before table TFSSCRN.
When a corresponding AIN trigger is not present in table TRIGDIG, the results are as follows:
Table Size
The minimum table size for table TFSSCRN is 0 tuples, and the maximum table size is 32,000 tuples. A restart is not required to increase table size.
Datafill
The following table describes datafill for table TFSSCRN:
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Table TFSSCRN Field Descriptions
Field Subfield Entry Explanation and Action
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TFSCODE 800, 888, 877, TFSCODE describes the toll-free code (SAC)
866, 855, 844, in use.
833, 822
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FROMNXX 000 to 999 FROMNXX describes the lower-bound of the range
of the numbers in this SAC, that are processed
by GR-2892.
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TONXX 000 to 999 TONXX describes the upper-bound of the range of
the numbers belonging to GR-2892.
Note: The numbers belonging to GR-2892 must be
greater than or equal to FROMNXX.
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-End-
Datafill Example
The following example MAP display shows sample datafill for table TFSSCRN:
TFSCODE FROMNXX TONXX _____________________________ 800 622 733 |