Calling Name Delivery (CNAM)

View as Markdown

Calling Name Delivery (CNAM) is a telephony service that shows both the caller's name and phone number on the recipient's device during an incoming call.

The name comes from a CNAM database. When a call comes in, the recipient's carrier looks up the caller's phone number in the database and displays the name registered for that number.

CNAM is available for Infobip USA voice numbers and applies only to voice traffic in the United States. You can use it in two ways:

CNAM Storage: For outbound calls. Register a calling name for your Infobip voice number so that recipients see your business name when you call them.
CNAM Delivery: For inbound calls. Retrieve the name of the person or business that calls your Infobip voice number.

NOTE

For this feature to work properly, the recipient's phone and network must support the display of CNAM information (Caller ID with Name display). Some carriers may charge extra for enabling this service or include it in specific plans.

CNAM Storage

Use CNAM Storage to associate a calling name with an Infobip voice number. This name identifies your business to recipients on outbound calls.

When you register a calling name, the name is stored in CNAM databases and displayed on the recipient's device during an incoming call, provided their carrier and device support CNAM.

NOTE

A calling name can take up to 72 hours to propagate to the CNAM databases and appear on your outbound calls.

CNAM Delivery

Use CNAM Delivery to retrieve the caller identification when end users call in on an Infobip voice number. This feature has an additional charge.

CNAM Delivery is applicable for:

Calls API: The resolved CNAM is sent in a callReceived event in the resolvedCnam field.
Inbound calls forwarded to SIP trunk through Call routing: CNAM is sent in the From header (for example: CNAM <sip:from_phone_number@1.2.3.4:5060>).

Configure CNAM

To configure CNAM Storage or CNAM Delivery for your Infobip USA voice numbers, see the Set up and configure US voice number features section in the US voice number features documentation.

Was this page helpful?