Coin Operated Desk Top Phone has back light for night version. This Desk Top Phone has free call facility for police/fire/ambulance. Coin Operated Desk Top Phone is manufactured by Trisha Electronic & Communication Pvt Ltd Trisha Electronic & Communication Pvt Ltd also manufactures coin operated phone, wall mounted pay phone and local call meter. The Coin Operated Desk Top Phone is based on high speed micro controller based technology. This Desk Top Phone has programmable pulse rate for group dialling and LCD display which shows deposited amount, dialled number, balance time. This Desk Top Phone has coin box full indication on display.