INTRODUCTION
The CH1817 is a Family of Low Profile Data Access Arrangement (DAA) Modules. They are compatible with all modem chip sets. These devices have been tested to meet or exceed FCC Part 68 requirements and are Canadian DOC approvable. They are also recognized by Underwriters Laboratories to UL 1459 Specifications.

FEATURES
• Low Profile, Ultra small size: 1.0” x 1.0” x 0.35”
• Complete DAA function
• Ring detection
• Built-in 2-wire to 4-wire conversion
• Lightweight
• Multimedia compatible
• +5V operation
• 1000 VAC isolation
• 800 Volt surge protection
• V.32bis/14,400bps, applications
• UL1459 recognized
• CH1817-L: Low power consumption and Common mode noise rejection filter
• CH1817-LM (special order): Reduced transmit attenuation
• CH1817-D: Differential transmission input and 0dB transmission insertion loss.