IP network broadcast telephone terminal

IP network broadcast telephone terminal

IP network broadcast telephone terminal, industrial IP telephone is specially designed for all kinds of power tunnel high humidity environment, with high protection, low power consumption characteristics, one line can support 10 telephones, DTMF code standard more than 10 kilometers.It has 1W speakers built in, with a clear, resonant voice that requires no extra power and can be transmitted over a distance of up to 10km.

1. Product features

Automatic dialing with one key

Call time limit

Send local address code, send code time adjustable

High waterproof, dustproof performance, all aluminum alloy chassis, protection grade up to IP55

The surface is sprayed with imported reflective paint, eye-catching color, 5-10 years fade-free, fully in line with GB/T5237.2-2000 standard

2. Application scope

Used for making distress calls on highways;Used for making interval telephone calls on railways or subways;

Crossing tunnels, power tunnels and other maintenance telephone;

3. Technical parameters

Conditions of use: Ambient temperature: -35℃~+75℃, relative humidity: 45%~95%

Atmospheric pressure: 86~106Kpa, environmental noise: ≤60dB

Ringing level: 70dB Dual tone multi-frequency (DTMF) Dialing:

Pulse dialing: The discontinuous ratio of the dialing pulse is 1.6± 0.2:1.0, and the dialing pulse speed is 10±1 times/second

Dual tone multifrequency (DTMF) dialing:

Low frequency group frequency: 697.770.852.941HZ, high frequency group frequency: 1209.1336.1477HZ;

Frequency offset: ≤1.5%;Low frequency group level: -9±3dB;

High frequency group level: -7±3dB;High and low level difference in frequency combination: 2±1dB;

The total distortion, such as harmonic, is at least 20dB lower than the fundamental wave level.

Voice transmission index (5 km) SLR 12 or less, RLR - 1 or less, STMR 10 or more, the input impedance: 600 Ω

Parameters are stored in EEPROM and no power is lost

4. Function Introduction:

Automatic dialing function: press the dialing key, after 3~5 seconds, you will be automatically dialed to the specified number.

Talk time limit: 7 minutes will start when the phone is connected, and the time will automatically hang up.Prevent long calls from occupying line resources.

Send address code: When the call comes in, press the answer button to receive, and send the local address code within 2s after receiving;When making a phone call, press the dial button and send the local address code within 1-63s. The delay time is realized by the dial code switch inside the machine.