Caller ID (CLI)
Caller ID, also called CLI (calling line identification), is the phone number — and sometimes the name — shown to the person receiving a call.
How caller ID works
When a call is placed, the phone system sends a caller number along with it. The receiving phone shows that number, and the recipient can call it back. For a business, the caller ID should be a company number rather than a personal mobile, so customers can call back and reach the team.
Businesses calling several countries often show a local number in each country. People are more likely to answer a local number, and calling it back is cheaper for them.
Caller ID rewrite
A caller ID rewrite (or CLI rule) changes the number or name attached to a call as it passes through the phone system — for example adding a country code, removing a prefix, or adding a label such as "Sales" so the person answering knows which line the call came in on.
Caller ID in phone.systems™
In phone.systems™ each user can be given several caller IDs — for example a UK, German and Lithuanian number — and picks which one to show when making a call in the phone.systems™ app. An internal caller ID is shown on calls between colleagues.
Ring Group and Queue objects have CLI rules that can rewrite the caller name shown to the team, and outbound termination routes for BYOC carriers can rewrite the number sent to the carrier. See the business phone app.