Metal-enhanced RTP

3G mobile video telephone

3G mobile telephone

114 telephone number inquiry

114 telephone navigation

VHF radio telephone transmitter

two-way radio telephone apparatus

station radio set of radio dispatching telephone for train

simplex radio telephone

RTMS Radio Telephone Mobile System

RT Radio Telephone

radio telephone transmitter

radio telephone tester

radio telephone system

radio telephone receiver

radio telephone network

radio telephone installation

radio telephone alarm signal generator