General Information
The ISAR 34, ISDN Data Access Controller forms an advanced solution for ISDN applications communicating with remote ISDN as well as analog terminals.
The ISAR 34 PSB 7115 follows its predecessor ISAR PSB 7110 which is capable of modem modulation up to 14400 bit/s (V.32bis). The new ISAR 34 has the similar functional architecture and additionally supports modem modulation up to 33600 bit/s (V.34bis). As well the platform is upgradeable to new modem standards (PCM modems) and is able to run algorithms for audio compression (e.g. G.728) or answering machine alternatively. A special version called "ISAR AC" is available for this purpose

Features
• Modem modulation up to 33600 bit/s (V.34bis) including fallback modes
• Fax modulation up to 14400 bit/s (V.17) including fallback modes
• Bit rate adaptation according to V.110 for both Bchannels (except during datamodem modulation)
• DTMF generation and detection in one channel
• Two universal formatters supporting ASYNC (ITU-T V.14), HDLC and binary framing of data for Bchannel applications
• V.8 rate negotiation
• ISDN D-channel HDLC controller with TIC bus support
• ISDN C/I-channel and MONITOR channel handler
• IOM-2 terminal mode (1.536 MHz), line card mode (4.096 MHz)
• Mailbox interface for host communication
• External memory interface to connect external program and data memory
• Upgradeable to new technologies (e.g. PCM modem)
• 256 byte FIFO per direction for host interface communication of B-channel data
• 9 programmable general purpose I/O lines
• On-Chip PLL for clock generation
• 3.3 V power supply
• Thin QFP-package
• Advanced CMOS technology