TRAI published its Comparative performance of Mobile Service Providers in Kolkata and West Bengal Telecom Circle the following factors were looked into it Quality of Service (QoS) Parameters of Accessibility,Call Drops,Voice Quality, Billing Complaints.
Vodafone emerged as Number one mobile operator in Kolkata circle in terms of accessibility where as Tata Teleservice (cdma) emerged as number two followed by MTS(cdma) in third position ,Aircel in forth, Reliance GSM in fifth, Airtel in sixth position, BSNL in seventh, Reliance CDMA in eighth .
In Terms of Call Drop-Aircel rated the worse GSM network with Highest number of call drops, BSNL in second position where as MTS CDMA had least number of call drop in Kolkata circle.
In Terms of Voice Quality BSNL was rated with best Voice Quality, followed by TTSL-CDMA in second position and MTS in third position.Vodafone was rated worse in terms of Voice Quality amongst all operator in Kolkata Circle.
Here is the Full Report for Kolkata and West Bengal telecom circle.
| Name of Service Provider | Name of Service Area | Accessibility: % age of call made by subscriber and Successful with in the operators Network (>95%) | Call Drop Rate: % age of establish calls getting disconnected Due to Network Problems (<3%) | % age of calls with good Voice quality (>95%) | Resolution of Billing and Charging Complaints resolved with in 4 weeks (100% with in 4 weeks) |
| Airtel | Kolkata | 98.4% | 0.8% | 97.7% | 100% |
| Airtel | W.Bengal | 95.7% | 1.5% | 95.8% | 100% |
| BSNL | Kolkata | 98.0% | 2.0% | 99.0% | 100% |
| BSNL | W.Bengal | 97.0% | 1.6% | 96.0% | 100% |
| DishNet (Aircel) | Kolkata | 99.2% | 1.3% | 97.9% | 100% |
| DishNet (Aircel | W.Bengal | 95.2% | 2.6% | 94.0% | 100% |
| Reliance Comm (CDMA) | Kolkata | 97.4% | 0.5% | 98.6% | 100% |
| Reliance Comm (CDMA) | W.Bengal | 97.0% | 1.2% | 97.6% | 100% |
| Reliance Telecom (GSM) | Kolkata | 98.6% | 1.0% | 96.6% | NA |
| Reliance Telecom(GSM) | W.Bengal | 98.5% | 1.6% | 96.9% | NA |
| Sistema Shyam (MTS) | Kolkata | 99.6% | 0.3% | 98.7% | NA |
| Sistema Shyam (MTS) | W.Bengal | 99.0% | 1.0% | 98.2% | NA |
| Tata Teleservices (CDMA) | Kolkata | 99.8% | 0.6% | 98.9% | 100% |
| Tata Teleservices (CDMA) | W.Bengal | 99.1% | 0.9% | 98.3% | 100% |
| Vodafone Essar | Kolkata | 100% | 0.6% | 97.4% | 100% |
| Vodafone Essar | W.Bengal | 97.5% | 1.1% | 97.0% | 100% |
