DID matching

Also known as: DID matching mode, DID match

The strategy PSE's inbound route uses to map a dialled DID to a destination. Four modes: DID Pattern (single destination), Match DID Pattern to Extensions (with placeholder), Match DID Range to Extension Range, and DID Number to Specific Extension.

When an inbound call lands on a trunk with a known DID, PSE’s inbound route runs its DID matching to decide where the call goes. The four modes solve different shapes of DID-to-destination mapping:

DID Pattern routes all DIDs matching one or more patterns to a single destination. Best for main-number-into-IVR flows.
Match DID Pattern to Extensions uses a pattern containing a {{.Ext}} placeholder; for 882{{.Ext}}, an inbound call to 8821001 rings extension 1001 directly. Best for bulk N-to-1 mapping where the DID embeds the extension number.
Match DID Range to Extension Range maps a sequential DID range like 8823201-8823210 to a sequential extension range 1001-1010 in lockstep. Best for clean DID blocks.
DID Number to Specific Extension is an explicit list: DID 5501230 → 1000, DID 5361981 → 1001, etc. Best for non-sequential per-user DIDs.

Patterns support the wildcards X (0-9), Z (1-9), N (2-9), [136-8] (any of 1,3,6,7,8), . (one or more digits), and ! (zero or more characters).