The PSB 2197 T is a Single Chip Subscriber Access Device (SAD) designed for ISDN (Integrated Services Digital Network) applications. Manufactured by Siemens (now Infineon Technologies), this device provides a complete solution for connecting subscriber equipment to ISDN networks. It integrates the necessary functions for transmitting and receiving voice and data over ISDN Basic Rate Access (BRA) lines.

Applications

• ISDN Terminal Adapters (TAs)
• ISDN Network Termination (NT) devices
• ISDN PC cards
• Digital telephones
• Voice over IP (VoIP) gateways with ISDN connectivity
• ISDN routers

Features

• Integrated S/T interface transceiver
• Echo cancellation for improved voice quality
• Adaptive equalization to compensate for line impairments
• Framing and deframing of ISDN data
• D-channel protocol handling (LAPD)
• Clock recovery and synchronization
• Low power consumption
• Loopback test capabilities
• Supports various ISDN standards and protocols

Benefits

• Reduced system cost due to single-chip integration
• Improved performance and reliability through echo cancellation and equalization
• Simplified design and development process
• Lower power consumption for energy-efficient operation
• Enhanced interoperability with ISDN networks
• Faster time-to-market for ISDN products

Additional Details

The PSB 2197 T handles full-duplex data transmission at 144 kbps (2B+D channels) and incorporates advanced features such as echo cancellation and adaptive equalization to ensure robust and reliable communication over ISDN lines. It supports D-channel protocol handling (LAPD) and provides clock recovery and synchronization functions. The device operates from a single power supply and offers low power consumption, making it well-suited for various ISDN applications. Its integrated features and performance enhancements contribute to a seamless ISDN experience.