The competition will run from 30 August – 8 September at ExCeL, with Great Britain making their Paralympic Games debut in the sport.
Great Britain's men start against Beijing 2008 bronze medallists Russia on 30 August, while the women begin the following day against European champions Ukraine.
Current men's Paralympic champions Iran will take on Rwanda in their first game on 30 August, while defending women's champions China start their tournament on 31 August with a match against the USA.
The finals of the women’s competition takes place on 7 September, with the men’s taking place on the following day.
Tickets on sale now
London 2012 Director of Sport Debbie Jevans said: 'The Sitting Volleyball competition promises to give us some real highlights this summer.
'It’s great that people still have the chance to buy tickets to be there to experience what promises to be two exciting, and closely contested, events.'
Tickets are still available from the London 2012 ticketing website, with tickets priced at £15 or just £5 for young people and seniors.
£10 ExCeL Day Passes are also available for general admission on a first come, first served basis.