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Understanding CNAM in VoiceStack

Nivya U
  • Updated

CNAM (Caller ID Name) is the name associated with a phone number that appears on the recipient's caller ID when you make an outbound call. Instead of displaying only a phone number, CNAM allows the recipient to see a business or individual name, helping them identify who is calling. CNAM is commonly referred to as Caller ID Name or Calling Name Delivery.

For example:

Phone Number

CNAM Display
(555) 123-4567 ABC Dental Clinic
(555) 987-6543 John Smith

The CNAM of a number can be represented as a string of text no longer than 15 characters and presented in uppercase letters as an industry standard.

  • CNAM cannot start with a number; it should begin with a letter.
  • Can only contain letters, numbers, periods, commas, and spaces.
  • Must be a unique name or value, cannot be a generic value, such as a City/State.

Why is CNAM Important?

When patients or customers receive calls from unknown numbers, they may ignore the call or assume it is spam. Displaying your business name can improve trust and make it easier for recipients to recognize your organization. CNAM helps practices to:

  • Increase answer rates for outbound calls.
  • Improve brand recognition.
  • Provide a more professional caller experience.
  • Reduce the likelihood of calls being ignored due to unfamiliar numbers.

CNAM in VoiceStack

VoiceStack supports outbound caller identification through the phone numbers assigned to your account. If your organization requires a business name to be displayed when making outbound calls, CNAM registration may be available depending on your phone number type and carrier requirements.

To enable CNAM for your practice, please contact our Support team.

Note: CNAM is currently supported only for business use. Personal and individual CNAM registrations are not available at this time.

Use Cases

  • While medical and dental practices are contacting patients.
  • Appointment reminders.
  • Follow-up calls after patient visits.
  • Billing and administrative communications.
  • Customer support and service teams.

Support / Contact

Need further help? Contact support@voicestack.com  or call 407-833-6436.

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