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What is a DID Number and Why Does Your Business Need One ?

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Fonada, a trusted CPaaS & cloud telephony solution provider in India, is popularly known for revolutionizing communication with Cutting-Edge Technology. Our advanced customer engagement solutions,...Read more


Fonada, a trusted CPaaS & cloud telephony solution provider in India, is popularly known for revolutionizing communication with Cutting-Edge Technology. Our advanced customer engagement solutions,...Read more

Customers can get the support they need without communicating with the other person on the line due to inbound call route options, automated assistants, and IVR technologies built into a business’s phone system.

However, lengthy and overly complex menus might irritate your clients, particularly those who know the representative, organization, or number they need to dial the phone.

What is DID number? Direct Inward Dialing overcomes the irritation of automated call options and routing calls to a specific phone within your corporate servers, making a more instant connection.

How Does Direct Inward Dialing Perform?

Direct inward dialing (DID) is a phone system feature that connects incoming calls directly to a user, an extension, or a voicemail. This is faster than an automated routing menu, which routes calls to the right person.

Businesses gain access to direct inward dialing by leasing business contact numbers from a network operator and allocating these DID numbers to certain users, lines, or ring groups.

DID is available from providers of private branch exchange (PBX) and classic landline PBX. However, setting it up differs depending on whether the phone network uses VoIP or PSTN.

What Does DID Number Mean For?

A DID contact number is a business phone number that bypasses IVR interfaces and self-service routing platforms by directing to a specific phone or individual within the business phone network.

A landline PBX system allows local numbers to be assigned to businesses depending on their physical location. On the other hand, you may get local vanity numbers from any country and assign them to employees via a cloud-based or hosted PBX system from a VoIP or UCaaS provider.

Explanations of Direct Inward Dialing with Examples

What is DID number? Direct inward dialing is if a company requires a virtual phone number to strengthen its communications infrastructure to serve its customers better. This way, clients can connect directly with the appropriate division without using a general extension line or waiting in line.

Direct inward dialing (DID) numbers are also known as direct dials, direct dial-ins, and direct-dial numbers.

If you want to learn much about direct inward dialing numbers, you should focus on how it solves a specific issue. Every day, a client or a business partner may wish to communicate with a specific member or division of the organization. When individuals must browse multiple menus to get to their desired destination, problems occur. When a consumer calls in, an automated voice interface plays an infinite series of prompts, which puts them on hold for a few minutes.

These navigational inadequacies lead to damaged customer relationships and lost revenue for the business. Direct inward dialing (DID) is a virtual phone arrangement that allows one to dial a phone number directly into an extension, be it a customer’s or a supplier’s.

The telecommunications provider assigns a range of phone numbers to your company’s Private Branch Exchange (PBX). Consequently, a virtual number allows clients to connect directly with a specific extension rather than the core reception line.

DID number can be used with any phone service, including local, toll-free, and premium rate.

Why Should Businesses Prefer Direct Inward Dialing?

Is that the most effective method for managing all the calls that come into your business if you have a reception platform? Consider introducing a direct inward dialing option if you search for more effective ways to handle incoming and outgoing calls.

Some customers desire to contact a representative of a specific company division individually. A DID telephone number can be an added benefit for firms having different lines for customer support or sales, particularly when linked with a VoIP system.

This service allows the caller to be routed directly to the appropriate department or staff, reducing the need for a receptionist. Additionally, it reduces the time customers spend on the phone waiting for the correct department to answer their call or be transferred. You can enhance the experience of customers and ensure their satisfaction.

When Should Organisations Implement Direct Inward Dialing?

Implement Direct Inward Dialing

With DID numbers, businesses can streamline their calls while maintaining a professional reputation. So, let’s look at the many uses virtual numbers have across industries.

1. Put Sales And Customer Service Under One Roof

Customers are interested in something other than searching through an interminable directory of phone numbers to reach the appropriate department. DID numbers direct calls to a certain department, whether local or international. With that, it will be easy for your customers to get in touch with the right individual to solve their problems or make a sale.

2. Establishing A Presence In The Community

Many clients prefer to interact with a local business. In an outbound marketing effort, clients will not answer the phone for an unknown number. You can circumvent these sales barriers by using a local DID contact number. With a local DID number, you can make the community engagement process more accessible even if your team is located worldwide.

3. Keep Track Of Your Ad Campaign

You can track the success of your marketing campaigns using virtual phone numbers. You can provide each campaign with an easy-to-remember inward number. When the calls are transferred back to your division, you will determine which ones create the most favorable impressions on your potential customers.

4. Develop Relationships In The Banking And Financial Sectors

Some industries are exerting greater effort to cultivate ties with their customers. Financial institutions and banks are at the forefront. Those calls can be routed to an agent with the expertise to address the caller’s concerns.

5. Enhancing The Online Shopping And Food Delivery Process

Connecting with clients can be challenging for businesses constantly on the go. The DID telephone system provides the customer with a virtual number, which can then be allocated to a delivery agent. Therefore, the agent and the customer can have a private discussion without compromising performance.

6. Getting In Touch With The Service Engineers

When a service issue arises, customers want prompt resolutions. Businesses may better coordinate the information flow between their engineers and customers using virtual numbers. In turn, this improves the experience for all participants involved in the procedure.

A Practical Guide to How DID Work:

Incoming calls from a virtual contact number can be forwarded to any physical phone number or PBX via a technology called direct inward dialing.

Almost all contemporary businesses employ direct inward dialing. It enables them to provide distinct phone numbers for each department. Typically, a business will assign a unique phone number or numerous DID numbers to its service, sales, and other departments. It is also usual for larger businesses to assign direct numbers to each employee.

DID numbers represent one of the most versatile telecom solutions on the market and operate without additional hardware. The following is a list of the technological acronyms that are highly relevant to DID. The following technologies relate to direct inward dialing.

Voice Over IP

Session Initiation Protocol (SIP) is usually used to send calls to voice-over IP when someone calls a DID number. SIP is a protocol used in private telecommunications networks to terminate and continue voice communications. This is typically the most cost-effective option.

Private Branch Exchange

Private branch exchanges are multiline phone systems used within a corporation or organization, and direct inward dialing is often used in conjunction with them. The DID service trunks are unidirectional, directing incoming calls to specific lines on the PBX.

Public Switched Telephone Network (PSTN)

Calls made over a company’s plain old telephone system can be forwarded to either regular landlines or mobile phones via the PSTN (Public Switched Telephone Network). Using underground copper wiring to deliver phone calls often results in a call connection of excellent quality.

Primary Rate Interface (PRI)

Primary Rate Interface, or PRI for short, is a common type of telecommunications interface that management uses to transfer voice and data transactions through a network. PRI uses T1 carriers across an ISD Network to provide premium call quality.


DID can also be used to send and receive faxes over IP. A single fax machine can receive faxes from different DID numbers. It is less prevalent than voice communications.

How Do PBX Systems Make Use Of DID Numbers?

Direct inward dial (DID) numbers are usually used in conjunction with PBX systems in businesses. In this scenario, a DID service provider provides one or more transmission lines to the customer’s PBX, assigns various contact numbers towards this line, and routes all calls to such numbers and through the trunk.

Whenever the PBX system gets a call, it transmits the called location number to route it to the desired extension. This allows businesses to provide each employee or division with a separate phone number without having to set up a separate phone service.

What Do DID Telephone Numbers Mean?

Standard phone numbers are similar to direct dial numbers. Virtual DIDs route calls to a specified individual or group within an organization.

When a consumer has a phone number associated with a DID IP, they never have to wait for someone to receive the call or navigate through complicated menus.

All incoming calls are routed to the business phone system with these numbers. Existing VoIP phone systems can manage this customized call routing relatively easily.

Outbound dialing is also possible with a DID telephone number. This direct outbound dialing is also useful for number masking, allowing for simple two-way conversations between your company’s staff and clients or prospects.

What Are the Advantages of Direct Inward Dialing?

Advantages Of Direct Inward Dialing

There are various advantages to using straight inward dialing. Let’s explore several of them:

1. Cost Savings:

Your business can use fewer trunk lines with DID. A VoIP system can forward DIDs to other continents, minimizing long-distance charges.

2. Time Savings:

It is more efficient to route calls to the individual concerned directly instead of passing through a receptionist or using a phone menu. When a customer’s agent only has one number, it’s easier for them to keep track of them.

3. Enhanced Client Satisfaction:

Customers can easily reach personnel when they require assistance. Customers may find that remarkable.

4. Team Interaction:

Employees can use a dedicated extension to reach team colleagues in various buildings, towns, or countries.

5. Local Telephone Numbers:

A call to a local number is the preferred option. A New York-based company may set up a phone service in Miami or London for clients in those markets.

6. Using Existing Technology

You won’t need to replace your existing phone system or invest in expensive new equipment due to VoIP’s direct dial-in capabilities in the telephone network.

7. Automatic Call Forwarding:

Direct-dial phone systems allow you to redirect incoming calls to another telephone number of your choosing without the consumer ever needing to know the number.

8. Flexibility:

When you have a DID, you have greater control over the location and timing of call reception. A mobile workforce necessitates a versatile solution. The strength of Voice over Internet Protocol (VoIP), Direct Inward Dialing (DID), and Session Initiation Protocol (SIP), along with cell phones, email, and SMS, equals a more powerful telecommunications infrastructure for your company.

9. Time Settings:

Calls can be automatically routed to various numbers at specified intervals. This is perfect for providing after-hours assistance for international teams working in different time zones.

10. Attribution in Marketing:

To keep track of the success of each advertising effort, give it a unique tracking number.

What Are The Prerequisites For Having An Active DID?

Your business needs operational lines to forward inbound calls for DID service. Calls can be easily and efficiently redirected to your current phone lines using cutting-edge communications systems. Landline, digital, or mobile transfer lines are available.

Should I Choose Direct Inward Dialing?

Does the reception system provide the most effective means of managing incoming calls? Direct inward dialing lets callers reach the proper staff or department, reducing reception costs.

Callers spend less time identifying the right department and being moved. Direct inward dialing improves caller satisfaction.

However, DID isn’t always the best choice. If you have turnover and direct dial numbers for former employees, direct inward dialing may also rely on workforce availability.

Therefore, it is up to the company to decide how vital it is to have easy accessibility to departments from customers, vendors, and other external parties.

How to Get DID?

Follow these steps to get a DID:

  1. Get business phone numbers. You may port your existing business phone numbers if you already have them.
  2. Assign these business telephone service numbers to each phone system user. It’s easy to do from the dashboard for administrators.
  3. Contact a seasoned VoIP service provider who can advise you on your business’s budget and the required local access numbers.
  4. Inbound callers can contact your teams easily with direct inward dialing.

Direct inward calling numbers provide top-notch customer service. Your customers can reach staff and departments more easily with a direct inward number.


DID numbers are extremely beneficial for businesses and contact centers. Any business can prosper if staff and consumers communicate effectively. In addition, you can have complete assurance with a DID number. Choose the top telephone service to improve your business with DID number systems.

Frequently Asked Questions

What Does It Mean To Direct Inward Dialing?

Direct inward dialing (DID), also referred to as DID or direct dial-in, is a service that transfers incoming calls to the VoIP system of a business or an external phone number.

Does Direct Inward Dialing Help Me?

Direct inward dialing lets callers reach the work scopes or department, reducing reception costs. In addition, it minimizes the time individuals spend locating the relevant department and being routed between departments. Direct inward dialing improves caller satisfaction. Therefore, it is completely up to your organization to assess the value of allowing clients, providers, and customers to communicate directly with departments.

How Does A DID Number Work?

Direct inward dialing (DID) numbers are phone numbers that are not associated with a physical telephone system. Having many DIDs for use by various divisions and employees allows businesses to expand.

What’s the distinction between DID and TFN?

Toll-free numbers are formatted with a country code, whereas DID numbers are allocated by local area code. Consequently, DID numbers vary with the city, whereas toll-free numbers vary with the country. Most companies have one or two toll-free numbers for support. However, a corporation might have many DID numbers for virtual presence in multiple cities.

What Is The DID Number On A Cell Phone?

DID, or direct inward dialing connects a group of external phone numbers to an internal PBX. DID technology allows for the dynamic assignment of phone numbers within an organization without the need to set up extra external phone lines.

What Are DID And Dod In Telecommunications?

Direct Outward Dialing, sometimes known as DOD, is a service that allows a DID number to make outbound phone calls. DOD can supplement direct inward dialing service with fixed caller identification to provide two-way voice communication. In addition, DOD can facilitate network calls from any of the company’s primary phone numbers.


Fonada, a trusted CPaaS & cloud telephony solution provider in India, is popularly known for revolutionizing communication with Cutting-Edge Technology. Our advanced customer engagement solutions, including Voice, Messaging (SMS & RCS), WhatsApp Business, and Conversational AI tools are designed to empower individuals and businesses to communicate effortlessly and efficiently. Embark on a journey into the future of communication with Fonada, and unlock a world of seamless connectivity and productivity.

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