August 29, 2018

What Is Caller ID And How Does It Work?

People have immediate access to unlimited stores of data at their fingertips. Sometimes, instant access to critical information is vital in your professional and personal life. A great example of this need for knowledge is the creation and use of caller ID.

What is Caller ID?

Caller ID provides a digital display of the name and number of an incoming call. It uses online databases, and caller identification tech to identify callers before anyone picks up. Caller ID outputs up to fifteen characters for a name and ten digits for a phone number.

How Does Caller ID Work?

Caller ID functionality operates in two stages, here’s how caller id works.

1) Phone Number Identification

Usually, the number shown is the caller’s registered phone number. Outgoing calls via landlines or mobile phones use this method. However, the information on calls from VoIP (Voice over Internet Protocol) services can be modified. In other words, a web interface controlled by the caller allows them to edit this information. When routing calls, this feature makes it easier for customers to reference call back numbers.

2) Name Identification

The phone carrier of the receiving party Identifies the caller’s name. However, the information from the carrier doesn’t come from their internal database. Instead, phone carriers use CNAMs to cross-reference the phone number with the appropriate contact name.

What is CNAM?

CNAMs (Calling NAMe)s are third-party services that carriers use to identify and display the name of inbound callers. There is no universal standard regarding the collection or accuracy of the information in these databases. Additionally, there are several CNAMs available to phone providers. Therefore, inconsistencies occur with how names are displayed. In other words, the displayed information varies greatly depending on who receives the call and their phone provider.

How Can You Change Your Caller ID Information?

Depending on your phone provider and the type of services you subscribe to, there are options to change how your caller ID is displayed.


Traditionally, carriers derive caller information from the number associated with the caller’s phone line. In this case, you should contact the phone company and request an update. They can change the associated display name or create a secondary line for all new identification.

VoIP Lines

VoIP services are flexible regarding the modification of a caller ID’s name and number. Also, some VoIP providers allow on-demand changes to caller information. Thus, this action often doesn’t even require the need to contact customer support. In most cases, it’s done directly through a web interface.

Why Should You Monitor Your Caller ID Reputation?

High-volume outbound call centers should monitor the reputation of their caller IDs. That’s because SPAM flagged numbers cause calls to be block, making it hard to convert new business and harming your brand image. Above all, a caller ID’s status plays an essential factor in answer rates. It’s these reasons that monitoring your caller ID’s reputation is crucial.

Swapping Out Spam Numbers

Companies with large outbound phone number pools swap numbers frequently as they get marked as SPAM. Businesses are often wrongfully flagged as spam, despite their best efforts to remain ethical. This flagging happens as customers reject and report unwanted calls. Hence, numbers left in a flagged state for too long significantly impact sales efforts.

Prevent Spoofing

Even with a firm policy on outbound sales calls, flagging still happens. How is that possible? Caller ID spoofing could be to blame. That’s when someone hides their true identity by using a service that displays a different caller ID. Unfortunately, it’s possible to abuse this technology and use it for malicious purposes. If they are spoofing with your information, then your number is the one flagged as SPAM. Meanwhile, this is happening without you knowing it.

How Can You Manage the Reputation of Your Caller ID?

Services like Caller ID Reputation allow you to monitor the status and reputation of your phone numbers. Their user-friendly web interface makes light of this work. Check thousands of phone numbers all in one location. Verify the integrity of numbers with all spam and robocall blocking apps. It’s these reputation management services that ensure your business maintains FTC compliance and keeps outbound sales initiatives productive.