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Answer-Seizure Ratio

What is the Answer-Seizure Ratio?

The Answer-Seizure Ratio (ASR) is a key performance metric in telecommunications that measures the effectiveness of call attempts. It is defined as the percentage of successfully answered calls out of the total number of call attempts made by a telephone system. In simple terms, if a telecom operator makes 100 call attempts and 60 of those are successfully answered, the ASR would be 60%. This ratio helps telecom companies understand the quality and reliability of their network services.

The Origin of the Answer-Seizure Ratio

The concept of the Answer-Seizure Ratio originated with the growth of telecommunication services and the need for reliable metrics to gauge call quality and network performance. As telecommunications infrastructure expanded and the volume of calls increased, there was a need for a standardized measure to assess and compare the efficiency of different networks. The ASR emerged as a critical metric in the industry, providing insights into network performance and helping to identify issues such as call drops, network congestion, and routing problems.

Practical Application of the Answer-Seizure Ratio

In practical terms, the Answer-Seizure Ratio is used by telecom operators to monitor and improve the quality of their services. For instance, a telecom company might notice a decline in their ASR, indicating a potential issue with their network. This could prompt an investigation into whether the problem lies with network congestion, faulty routing, or another issue. By addressing these problems, the company can improve call completion rates and enhance customer satisfaction. Additionally, ASR is used in inter-carrier agreements to evaluate the performance of routes and make data-driven decisions about routing traffic through different carriers.

Benefits of the Answer-Seizure Ratio

The primary benefit of monitoring the Answer-Seizure Ratio is the ability to ensure high-quality telecommunications service. A high ASR indicates that most call attempts are successfully completed, reflecting a reliable network. This leads to higher customer satisfaction and can reduce churn rates. Additionally, a good ASR helps telecom operators optimize their infrastructure, reducing operational costs by identifying and addressing inefficiencies. For businesses that rely heavily on telecommunication services, such as call centers, a high ASR is crucial for maintaining productivity and ensuring effective communication. Overall, the ASR provides valuable insights that help maintain and improve the quality of telecommunication networks.


A good ASR typically ranges from 40% to 60%, though this can vary based on the type of network and services offered. Higher ASR values indicate better network performance and call quality.

Telecom operators can improve their ASR by optimizing routing paths, reducing network congestion, maintaining equipment, and implementing advanced technologies to detect and address call quality issues.

The ASR is important for businesses because it directly impacts call quality and customer satisfaction. A high ASR ensures that most call attempts are successful, which is essential for effective communication and operational efficiency, particularly in call-intensive industries.


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