The latest TCD enhancements  adding PSTN connectivity and a global roaming SIM mean that the TCD supports:

• En Grades 2, 3 and 4
• IP, GPRS and PSTN
• Vodafone, T-Mobile, Orange and O2
• Pins, serial connections and dial capture
• Upload download (UDL) for remote panel maintenance
• Online access
• 24/7 service desk