What is an address list?

An address list is a searchable collection of addresses. Each address in an address list may also have some associated data. You can use address lists for some of the features bundled with Sentinel, such as:

  • special prefixes — Prefix and Suffix Analysis Feature does a longest prefix match against a dialled number to see if the dialled address includes one of the prefixes.

  • short-codes — The Short Code Feature does an exact match against a dialled number to see if the dialled number is a short-code. Each short-code in the address list has the fully qualified address the short-code represents.

  • global-title addresses — The SS7 Determine Network Operator Feature does a longest prefix match against the destination SCCP address to determine which network operator the new session is for.

Each address list has a unique name. The addresses in the address list are stored in SLEE profiles. Sentinel manages a cached digit tree for each address list. The digit tree provides fast exact, longest prefix, and longest suffix matching of addresses.

addresslist
Figure 1. addresses in an address list called “Prefixes”, mapped into a digit tree

Addresses in an address list are sequences of: 0 …​ 9, a …​ f, A …​ F, #, *, .

Tip You provision address lists using the Sentinel Element Manager. See the Sentinel Administration Guide for details.
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