BSNL Broadband Long Term Subscription Benefits Under this offer, BSNL is giving up to 4 months of rental waiver to its customers. However, how much rental waiver you get will depend on how long your subscription period is. For example, BSNL has noted that the subscribers who pay in advance for 12 months of their broadband, DSL, BharatFibre, BBoWi-Fi Broadband plan or landline plan will get one extra month of service. This means that by paying for 12 months of service, they will be getting 13 months of service. There is another longer subscription option for the BSNL broadband and landline subscribers which is of 24 months. If the subscribers opt for a two year, or 24 months of subscription from BSNL, they will be getting 3 months of extra service. This means that on paying for 24 months, the subscribers will get 27 months of service for free. Lastly, the BSNL subscribers will also have the extra 4 months of service option as well. In this option, the subscribers will have to opt for BSNL landline or broadband service for three years or 36 months. On getting a 36-month subscription for BSNL services, the BSNL customer will be able to enjoy 4 months extra, or a total of 40 months of service. How to Avail Free Service Months from BSNL If you want to avail this offer from BSNL, then firstly you will have to avail it from the official BSNL website by clicking on the banner, or by calling a toll free number which is 18003451500. BSNL subscribers can also avail this offer by going to their nearest customer service centre. BSNL Other Benefits and Broadband Plans This is one of the ways that BSNL subscribers would be able to reap the benefits of a BSNL broadband plan. There are other benefits as well which BSNL broadband and landline subscribers enjoy and one the notable one is the cashback offer on landline calls. This offer gives 6 paise cashback to the customers for every five minutes of calling from BSNL landline. This way, the subscribers can get a total of Rs 50 cashback on their bills. BSNL broadband plans high as Rs 16,000. These plans offer anywhere from 10 Mbps to 100 Mbps and come in daily data or monthly FUP option, thus giving an ample choice to the subscribers.