ZZC
I. Local characteristics:
This phone is a desktop amplification station.This machine adopts the current M advanced digital noise reduction, echo cancellation technology, well overcome the traditional amplification terminal easy to noise, crosstalk, noise and other shortcomings, even if the MIC [microphone] and speaker close to the speech is not any noise, clear voice.All the technical indicators of the product are in line with the standards of the Ministry of Posts and Telecommunications, and can be connected with the switching host or dispatching machine and used as an amplification telephone terminal.
This machine adopts the second-line system.High definition, broadband sound, no noise.Full-duplex DSP processing technology.Built-in speaker 5W, suitable for 20-40 m 2 conference room; use AC 220V (or 15V DC).This machine can be used in enterprises and institutions as loudspeaker telephone or as terminals for factories and mining enterprises for dispatching amplification call.
II. Main Technical Index:
Transmission line: the second line of the public telephone network
Transmission Frequency: 300~3400HZ
Line level: 775 mV (600 ohm load)
Transmission level: transmission level-15~ + 5dB
The receiving letter level is not less than-20 dB
Microphone input noise reduction ability: 14 decibels
Speaker power: 5W, full-duplex intercom, no noise occurred
Power supply: 220V ± 10% power consumption: 10W or DC: 15V current: 1A
Weight: 2.0KG
Environment: Temperature: -10℃ ~ + 40℃ Relative humidity: 80%
Plate characteristics: DTMF, to meet the requirements of GB / T 15279-94
Three, operation instructions
When used as a telephone, use the same method as an ordinary automatic telephone;
Microphone: This machine uses an external microphone.After pressing the pickup button, the amplification terminal is in the receiving state; after pressing the pickup button: the light indicates the standby state, the light is connected to the line, and use the microphone to speak.After use, press the pickup key to turn out.
External speaker: when inserting the external speaker. Internal speaker is disconnected.External speakers can be used.
IV. Back panel description
DC 15V (1A): external battery power supply can be used during power failure, M large current 1A.At this point, the 220V should be disconnected
Disconnect the 220V AC power supply for the battery power supply.The M high current of the fuse is 0.5A.
