Mike's PBX Cookbook

Ring Generator - Switch Settings

When replacing a NT6D42CC Ring Generator, be sure to check the DIP switch settings!

SW1: Freq.
120Hz *
225Hz
350Hz

* Standard US: 20Hz/86V

SW2: Ring Voltage
1-2-3 Off86V *
1 On, 2-3 Off80V
2 On, 1-3 Off75V
3 On, 1-2 Off70V
SW2: Msg Volts
4 Off100V *
4 On150V
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