The Telecom Regulatory Authority of India (TRAI) gathers real-time user voice call quality data. The data presented in this study encompasses the collection of customer feedback through the utilisation of the TRAI MyCall application. Customers provide real-time feedback on the quality of voice calls, aiding the Telecom Regulatory Authority of India (TRAI) in collecting customer experience data in conjunction with network statistics.

The data has been made available by a policy that ensures public accessibility. Data is collected from diverse service providers across many locations, encompassing 3G, 4G, and 2G networks. This data includes ratings and coordinates, among other relevant information.

Data transfer technologies:

GPRS (General Pocket Radio Service)

GPRS (General Pocket Radio Service) is the most often used data transfer technique. Multiple mobile phones can use dedicated time intervals simultaneously, employing different algorithms for varied quality of connection with BS and different BS workloads. Each phone uses a distinct time interval, releasing them when they are no longer required or requesting fresh ones. The time slots between phones are partitioned into computer networks using patch splitting. The hardware regulates the number of time intervals the phone can use and depends on the mobile phone's GPRS class. 

The 8th and 10th GPRS classes have unequal transfer speeds. A class phone employs four-time intervals to obtain information but only two for transfer. With a theoretical maximum connection speed of 21.4 kilobits per second and five-time intervals, the GPRS speed is 107 kilobits per second. However, the average GPRS speed is 56 kilobits per second. When employing GPRS technology, mobile phones are issued IP addresses that are not always unique over the Internet. 

Edge technology

Edge technology is the next step in advancing GPRS technology (faster data transfer for GSM development, increased data rates for GSM evolution). Compared to GPRS, this technology employs new information encoding schemes, and the error handling algorithm has been modified (incorrectly sent packets are not returned; only information for their recovery is provided). As a result, the highest possible transfer rate is 384 kilobits per second. 

WAP technology

Initially, these technologies were utilised on mobile phones to connect to the Internet via personal computers, and it wasn't until later that further advancements in mobile phone technology enabled direct Internet access from mobile phones. WAP technology (Wireless Application Protocol, a protocol for wireless applications), which has relatively low requirements for technical specifications, pages created with special language WML (Wireless Markup Language) is unique to mobile phones: small screen size, keyboard control only, low-speed data transfers, page load delays, and more. 

Furthermore, due to the mobile phone's low processor performance and limited memory, the mobile browser does not process pages directly in this language for maximum functionality. Instead, it compiles them into a unique byte code executed by the mobile phone with the assistance of an intermediate server (known as the WAP gateway). It is why mobile operators highly appreciate the work of an intermediary server.

Dataset

Customer Feedback on Voice Call Quality Collected with the TRAI MyCAll App is Presented in this Catalogue. Customers provide real-time feedback on the quality of their voice calls, which TRAI uses in conjunction with data gathered from the network.

It is released under the National Data Sharing and Accessibility Policy (NDSAP). 

The contributors are:

• Ministry of Communications 
• Department of Telecommunications (DOT) 
• Telecom Regulatory Authority of India (TRAI)

The Voice Call Quality Customer Experience dataset is available from 2018 to 2022.

Dataset download:

The Open Government Data (OGD) Platform India dataset can be downloaded.

Image source: Unsplash