
4
5.2 Install
Before you start using the device, please install the following:
5.2.1
button instruction
Picture 1 - button instruction
The image above shows the key layout of the device. Each button provides its own specific function.
The user can refer to the instructions for the keys in the illustration in this section to operate the device.
Table 1 - button instruction
Label
Explanation
①
Speaker interface
according to the device input voltage adaptive output maximum power; 4Ω
speaker, POE / 10W, 12V / 10W, 18V / 20W, 24V / 30W. The greater the horn
impedance, the smaller the output power. Suggested wire diameter: 18AWG or larger
diameter.
②
Headset interface
Speaker audio line signal output impedance 32 Ohm, single ended output voltage 1.2V,
used for external headphones or active speakers
③
LED interface
Output 5V voltage 5 mA current, can be an external LED, indicating the network status,
call status, registration status.
④
Function key interface
connection switch, you can log on page set the call number or IP address.
⑤
Microphone interface
Recommend the use of 2.2K Ohm impedance electret condenser microphone,
sensitivity: -38dB, bias voltage 2.2V. Microphone signal cable it is recommended to use
a shielded cable and do not connect the shield cable to the grounding screw, improve