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1U 30 channel Modular PCM multiplexer
1U 30 channel Modular PCM multiplexer

1U 30 channel Modular PCM multiplexer

Member Details

Guangzhou Yinxun Comm.Tech.Co.,ltd

Guangdong,China
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modular design for flexible configurations, brand-name parts,48 hour high temperature burn-in aging tet for reliability guarantee/warranty,international pprovals,prompt delivery,reputation,small orders

1. Summary
This product is the fundamental device for the digital communication system, which is also named PCM basic group device.

It is used to multiplex the signals such as voice,data & image into a standard 2M interface via various interface cards,realizing point-to-point transmission.
 
2. Functional Features
a) provide 30 channels of optional subscribers interfaces of various types to facilitate the access of various services;
b) The voice interface supports caller ID display;
c) CCB payphone application with polarity reversal;
d) It directly provides 2M channel for transmission;
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 
Ø 4 wire audio interface/4 wire E&M     
Ø RS232/V.24 asynchronous data interface
Ø RS232 synchronous data interface
Ø RS422 data interface
Ø   RS485 data interface
Ø   Hot-line phone interface           
Ø   Magnet telephone interface
Ø   V.35 interface (n*64K bandwidth)
Ø   V.21/V.22 interface
Ø  10/100Base_T Ethernet interface(n*64K bandwidth)  
Ø G.703 64Kb/s co-directional data interface        
 
NOTES: The above subscriber interface modules can be optional for installation based on actual need of user. This device provides max 30 slots for your optional 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
☆ 2/4 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
Rate of Local Area Network Interface: 10/100Base_T
Rate of Wide area network interface: n×64k (n=1-30)Support simplex mode, duplex mode, full-duplex mode & tranparent mode.

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