Dial the following Toll Free numbers available on BSNL network in case of Assistance/ Help without paying for it from BSNL telephones:
- Some of the services are available in select cities only. Please check the availability in your city.
- Services written in blue color are available on STD also.
| Services | Numbers |
| PSTN Call Center (for any queries related to landline telephone, ISDN etc. Also accessible from CellOne, Excel & Tarang phones) | 1500 |
| Kisan Call Center (for any queries related to agriculture) | 1551 |
| Police | 100 |
| Fire | 101 |
| Ambulance | 102 |
| Billing Complaint Center | 166 / 1660-69 |
| Trunk Call Booking | 1580 |
| Trunk Assistance | 1581 |
| STD Complaints | 1582 |
| National Directory Enquiry (NDQ) Service | 1583 |
| International Trunk Booking | 1586 |
| International Trunk Enquiry | 1587 |
| International Trunk Delay Information | 1588 |
| Telex Complaints | 1589 |
| Directory Enquiry Service | 197 |
| Telephone Complaint Booking | 198 |
| Emergency Relief Centre on National Highways | 1033 |
| Relief Commissioners of Central/State/Union territory | 1070 |
| Control Room of District Collector/Magistrate | 1077 |
| Public Grievance Cell Telecom Circle HQs | 12727 |
| Public Grievance Cell Kolkata/Chennai | 1095 |
| Crime Stopper Cell of Police in Kerala, Rajasthan, Andhra Pradesh & Mumbai | 1090 |
| Women Crisis Response | 1091 |
| Earth-quake Helpline Service | 1092 |
| Natural Disaster Control Room | 1096 |
| AIDS Helpline Service | 1097 |
| Children in Difficulty/ Child Distress Service | 1098 |
| Catastrophe & Trauma Service | 1099 |
| Free Phone Enquiry | 1600 |
| India Telephone Card Enquiry | 1602 |
| Billing Complaint Center (Interactive Voice Response System) | 1671-73 |
| Maritime Search and Rescue Control Room of Coastal Guard | 1718 |
| Blood Bank Information Service | 1910 |
| Dial a Doctor | 1911 |
| Leased Circuits Fault Booking | 1918 |
| Eye Bank Information Service | 1919 |
| Change Number Announcement (Hindi) | 1951 |
| Changed Number Announcement (English) | 1952 |
| Changed Number Announcement (Regional language) | 1953 |
| Changed Number Announcement (in case of shift) | 1954 |
| Sancharnet Internet Help Desk Service | 1957 |
| Leased Circuit Fault Booking (WTR) | 1958 |