Entry-level IP Phone with 2 Lines & HD voice. As a very fashionable and friendly entry-level IP phone, Yealink SIP-T31 has an extra-large 132x64-pixel graphical LCD... All handsets Require a hosted licence. This licence is added below at a price of £9.60 per month. The Handset cost is calculated over 36 months. Other options are available please call us.