About Outbound Call Normalization

Outbound calls originating from subscribers are pre-filtered and normalized into a single standard format before reaching Outbound Routes based on the source device. When several rules match a number, the most specific pattern wins (as everywhere in Asterisk), not the row order — use the simulator to check which rule applies.

Routes, trunks and the normalization pages can all change a number, and they run one after the other. See the order and which setting to use.

• Mobile App: Transforms contacts dialed with + or country codes directly into standard national or international formats without requiring an outside line prefix.
• Desk Phones: Can strip an outside-line prefix (e.g. 0 or 9) dialed by desk phone users. The "strip 0" rule is off by default: switch it on only if your desk phone users dial 0 for an outside line, otherwise international numbers (00...) break.
• Web Softphone: Normalizes numbers originating from browser softphones and CRM click-to-dial integrations.
• Internal Extensions & Feature Code Safety: Internal extension calls, IVR menus, queues, and feature codes (*97 etc.) always take precedence and are completely isolated from normalization rules.