Specifications

Section 7 — Specifications
7.1 DAI-2 Dial-up Audio Interface
Power 12 Volts AC, 0.25 amps
Ports Relay Panel (20 conductor pin/plug type)
Line (RJ-11C modular)
Power (screw terminals)
Delay (internal 5 conductor pin/plug type)
Controls Connect (SPST momentary push button)
Inputs 5 Volt DC logic-level active low (screw terminals)
Outputs 7 SPDT relay contact closures (screw terminals)
1 DPDT relay contact closure (screw terminals)
Audio Input -10 dBv to +4 dBv active balanced with at least 100KΩ load impedance
Audio Output -4 dBm to +4 dBm active balanced into 600Ω or greater load
Jumpers 3 position jumper to apply phantom power to telephone
Dimensions 19” (w) x 5.5” (d) x 1.75” (h)
Weight 1.5 lbs.
Interference Complies with the limits for a Class B computing device pursuant to Subpart J of Part 15 of FCC
Rules
7.2 Flat Cable Pinout
Pin# Connection Pin# Connection
1 audio output (high) 11 open-collector output #4
2 audio output (low) 12 open-collector output #5
3 audio input (high) 13 open-collector output #6
4 audio input (low) 14 open-collector output #7
5 +12 volts DC (power) 15 open-collector output #8
6 ground (and power negative) 16 logic-level input #1
7 ground (and power negative) 17 logic-level input #2
8 open-collector output #1 18 logic-level input #3
9 open-collector output #2 19 logic-level input #4
10 open-collector output #3 20 logic-level input #5 (manual off-hook control)
DAI-2 Specifications page 7. 1