JK Audio Voice Path - Manual (Page 9)

9
Specifications
Input: Connector: 3.5 mm TRS cable
Input Impedance 10 k ohms
Level 250 mV RMS
Max input +12 dBM
Output:
Connector: 3.5 mm TRS cable
Output Impedance 2800 ohms
Level 100 mV RMS
Max Output -16 dBm
Isolation from phone line 1500
Volts
Handset and Telephone connectors:
Modular 4pin/4wire handset jacks
Handset Compatibility:
Voice Path is designed to work with most
carbon, dynamic and electret handset mi-
crophone types.
Not for use with cellular telephones or telephones
that have a keypad in the handset.