1. Summary
This product is a fundamental device for the digital communication system, which is also named PCM basic group device.
The device is used to multiplex the signals such as voice,data and images into a standard 2M link via various interface cards,realizing point-to-point transmission.
The device is used to multiplex the signals such as voice,data and images into a standard 2M link via various interface cards,realizing point-to-point transmission.
2. Functional Features
a) Provide max 30 channels of optional 2 wire subscribers interfaces of various types to facilitate the access of various services;
b) The phone interface supports caller ID display;
c) CCB payphone application with polarity reversal;
d) It provides 2M circuit for transmission directly;
e) Perfect indications of status are available to facilitate maintenance and management;
f) With small size, attractive appearance, and easy for installation and operation.
3. Working Conditions
Working Temperature: 0℃ ~ 40℃
Relative Humidity: ≤ 90% (25℃)
4. Power Supply
Input Voltage: -48V
Acceptable dynamic Voltage: -36V ~ -72V
Input Current: < 1A
5. Subscriber Interface Modules (optional)
Ø FXO
Ø FXS
Ø 2 wire audio interface/2 wire E&M interface
Ø V.21/v.22 interface
Ø Hot-line phone interface
Ø Magnet telephone interface
a) Provide max 30 channels of optional 2 wire subscribers interfaces of various types to facilitate the access of various services;
b) The phone interface supports caller ID display;
c) CCB payphone application with polarity reversal;
d) It provides 2M circuit for transmission directly;
e) Perfect indications of status are available to facilitate maintenance and management;
f) With small size, attractive appearance, and easy for installation and operation.
3. Working Conditions
Working Temperature: 0℃ ~ 40℃
Relative Humidity: ≤ 90% (25℃)
4. Power Supply
Input Voltage: -48V
Acceptable dynamic Voltage: -36V ~ -72V
Input Current: < 1A
5. Subscriber Interface Modules (optional)
Ø FXO
Ø FXS
Ø 2 wire audio interface/2 wire E&M interface
Ø V.21/v.22 interface
Ø Hot-line phone interface
Ø Magnet telephone interface
NOTES: The above subscriber interface modules can be optional for installation based on actual needs of users.
This device provides max 30 slots for your optional subscriber modules.
6. Technical Parameters
G.703-E1 Interface Confoms to the recommendation of ITU G.703/G.704; Nominal Bit Rate: 2048kbit/s Bit Rate Fault Tolerant: +102.4bit E1 Line Code: HDB3 Impedance: 75Ω or 120Ω | Subscriber Interface(FXS) Impedance: 600Ω Insertion Loss: -3±0.75dB Frequency Characteristic: 300~3400Hz(-0.6~+3dB) weighted noise: ≤63.7dBmop Crosstalk Attenuation: ≥65dB Loop Impedance: ≤1800Ω |
Subscriber interface(FXO) Impedance: 600Ω Insertion Loss: -3±0.75dB Frequency Characteristic: 300~3400Hz(-0.6~+3dB) Weighted Noise: ≤63.7dBmop Crosstalk Attenuation: ≥65dB Loop Impedance: ≤1800Ω | V.24/RS232 Interface Data and clock level conform to the recommendation of V.28 Synchronous Data Rate: 64Kbps Asynchronous Data Rate : 0~19200bps |
2 wire Audio interface Coding Mode: ITU-T G.711A Frequency Range: 300~3400Hz 2 wire Input Relative Level: 0~ -5dBr Output Relative Level: -2~ -7dBr 4 wire Input Relative Level: -14dBr Output Relative Level: +4dBr | V.35 Interface type: V.35 synchronous Rate: Nx64Kb/s(N =1~30) Clock: DCE |
Ethernet Interface Compatible with IEEE802.3 Local Area Network Interface Rate: 10/100Base_T Wide Area Network Interface Rate: 10Mb/s Supports simplex mode, duplex mode , full duplex mode & tranparent mode | Others 19 inch 1U EIA chassis LED indicates the working status of the system Input Voltage: -48V DC Full Capacity Static Power: <10W Ambient Temperature: ≤50℃ Relative Humidity: ≤90%RH |
7. Scope of Applications
This device is suitable for applications with E1 link for telecommunications end point stations or point to point transmission in different lines that only need telephone services.
This device is suitable for applications with E1 link for telecommunications end point stations or point to point transmission in different lines that only need telephone services.
