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Difference between PBX and Centrex

Difference between PBX and Centrex

There are several different types of business phone systems available on the market today. Two of the most popular types are PBX and Centrex. Although both systems have their pros and cons, one system may be a better fit for your business than the other. In this blog post, we will compare and contrast PBX and Centrex systems, so that you can make an informed decision about which system is best for your business. Stay tuned!

What is PBX?

PBX stands for Private Branch Exchange and is a system that allows for internal telephone calls within a private business or organization. In the PBX system, a central server manages all of the outgoing and incoming calls and connects them to the appropriate extension. PBX systems can be either analog or digital and can be customized to the specific needs of the business. PBX systems are often used in large businesses or organizations, as they allow for efficient communication between employees. PBX systems can also be used in small businesses, but may not be necessary if the business only has a few employees.

What is Centrex?

Centrex is a telecommunications solution that offers a combination of features and capabilities at an affordable price. Unlike other types of PBX systems, Centrex eliminates the need for expensive equipment and maintenance, since the provider takes care of all system-related tasks. Centrex also provides access to advanced telephony features such as call forwarding, call waiting, call conferencing, and more. Additionally, Centrex offers flexible deployment options and allows businesses to add or remove users on demand. Overall, Centrex is a valuable tool for businesses looking to expand their communications capabilities without breaking the bank.

Difference between PBX and Centrex

  • PBX and Centrex are two different types of telephone systems that are commonly used in businesses. PBX, which stands for Private Branch Exchange, refers to internal phone systems that are typically housed within an organization’s office space. In contrast, Centrex is a type of telecommunication service provided by outside vendors such as telcos or cable companies.
  • Both PBX and Centrex offer a range of features and functionalities that can benefit organizations of all sizes. PBXs often include advanced features such as voicemail, auto-attendant, and call forwarding, while some types of Centrex may allow businesses to take advantage of cloud services or hosted PBX services. Additionally, PBX systems can be customized to suit the unique needs of individual businesses, while most Centrex packages are more standardized in nature.
  • At the end of the day, PBX and Centrex both have their pros and cons and it ultimately comes down to what suits your specific needs best. If you’re looking for an easy-to-use system with plenty of advanced features, PBX may be the right choice for you.


In conclusion, PBX systems are more versatile and customizable than Centrex systems. However, Centrex systems offer a higher level of customer service and support. If you are unsure which system is right for your business, consult with an expert to help make the best decision for your needs.

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