Analogue telephone adapter with 1 FXS analogue telephone port and 1 FXO port on the PSTN line to provide emergency line support using the PSTN line. The integration of the FXO and FXS port enables this hybrid ATA service to support remote calling to and from the PSTN line. For added flexibility, the FXS port extends the VoIP service to a single analogue device. Users can convert their analogue technology to VoIP with the HT813's ultra-compact size, HD voice quality, advanced VoIP functionality, advanced security protection and multiple automatic provisioning options. These advanced features allow service providers to offer their customers high quality IP services, including the ability to upgrade to VoIP.