Apart from a few clicks on computer keyboards and the routine shuffling of paper, it is very quiet at this office in the capital, Delhi. A group of 15 people here are working on the massive task of compiling more than 7,000 signs that deal with words used in academic, medical, legal, technical and routine conversations by deaf people in India.
The group is a mix of speech and hearing impaired, deaf and non-disabled people. However they all communicate with each other in sign language.
Sign language has evolved in India over the last 100 years, but the government has only now decided to codify it in the form of a dictionary.
Once completed, it will translate Indian sign language into English and Hindi, and will be available in print and online editions.
Read more: BBC