vKVK stands for “Voice Krishi Vigyan Kendra", is an unique web and cell phone based multimodal agricultural advisory system. vKVK makes use of existing vast extension network of Krishi Vigyan Kendras (KVKs) in the country and allows the extension officers to send SMSs and voice based agro-advisories in local dialect to the farmers’ mobile phone. In a regular KVK, agricultural experts convey agri-information to their constituent farmers through physical contact when they meet each other during field visits, demonstrations, farmers’ fairs etc. In voice KVK, we are trying to overcome the inherited weaknesses of one to one communication. vKVK is developed by IIT-Kanpur as part of ICAR-NAIP supported project entitled “Engaging Farmers, Enriching Knowledge - Agropedia Phase II”. vKVK service started in August, 2011 as a pilot project in four states including Uttar Pradesh, Uttarakhand, Andhra Pradesh and Karnataka. Initially, the service was started in 24 KVKs and is now being up-scaled in 80 KVKs covering more than 20,000 farmers in whole of UP, Uttarakhand, 8 KVKs of Karnataka and 2 KVK’s of Andhra Pradesh. vKVK primarily offers two extension services viz. E2F (expert to farmer) and F2E(farmer to expert). In E2F, the agricultural expert can record and send messages to a set of registered farmers using a web based interface (Web to mobile) or a mobile phone (mobile to mobile). In F2E, a farmer can call up and speak to the expert of their respective KVKs (mobile to mobile). Similar to voice, the agricultural expert can also send short messages (SMS) to the designated farmers of the concerned KVKs. vKVK is part of the agropedia suite of services and is integrated with the digital library. With the advent of voice KVK system, the extension officer and farmer are not constrained with illiteracy problem. The advent of mobile telephony has abridged the gap that existed between the rural communities and extension agencies.