Phone Line Interfaces, Telephone Network Interfaces
Connecting to telephone networks for both voice and data applications requires a suitable interface that offers all of the required functionality and that is compatible with the network. IXYS Integrated Circuits Division offers two types of data access arrangements solutions, LITELINK™ and Cybergate™.
LITELINK is a single-IC high-speed, low-cost phone line interface (DAA) solution.
Cybergate offers faster integration for lower-speed applications.
• Voice and data applications
• Modem DAA for speeds up to V.92
• Half-wave or full-wave ring detection
• Worldwide telephone network compatibility
• Caller-ID reception
• Line side powered from telephone line
• 3.3 or 5V power supply
• Easy interface with modem ICs and voice CODECs
• High power transmit option
• Computer telephony
• VoIP gateways
• Satelite set-top box
• V.92 modems
• Fax machines
• Voice mail systems
• Embedded modems
• Vending Machines
• Automated banking
• Remote metering
• Security systems
The CPC5622-EVAL-600R evaluation board ships with the CPC5622 LITELINK III and CPC5712 voltage monitor to demonstrate the functionality of a PSTN two-wire terminating interface that provides both the analog voice transmission and signaling functions. The analog interface is configured to provide a 600 Ohm resistive AC impedance with 0dB gain in both the transmit and receive directions. While the CPC5622 provides the hook switch and ringing detect signaling functions, the CPC5712 is utilized to monitor and detect changes in the DC line voltage to determine loop status and signaling information sent by the network. Status of the loop is given by the logic level outputs of the three CPC5712 on-board detectors indicating Loop Presence, Line In Use, and Loop Polarity.