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Single E1 to 64 channel telephone PCM equipment
This product is a 19 inch 1U rack mounted installation, providing 64 channels of telephone to 1 * E1 interface. Internal automatic time slot allocatio
Product details
Product description
This series of equipment is an E1 transmission device developed on the basis of our company's dedicated ultra large scale integrated circuit. This product is a 19 inch 1U rack mounted installation, providing 64 channels of telephone to 1 * E1 interface. Internal automatic time slot allocation, automatic time slot allocation after the phone is off hook, timely release of time slots after hanging up, up to 31 phone calls can be made simultaneously, making the application very flexible. Equipped with comprehensive alarm functions, the whole machine operates stably and reliably, with low power consumption, high integration, and small size.
Features
◆Integrated circuits based on independent intellectual property rights;
◆19 inch 1U rack mounted installation size;
◆1-64 voice access, supporting caller ID function and reverse polarity billing function;
◆Automatically allocate time slots, only 1 E1 interface is needed for 64 phone calls;
◆When the maximum number of 31 telephones are simultaneously off hook/on call, and there are corresponding indicator lights when 31 telephones are online at the same time;
◆Support the mutual numbering function of various sites;
◆The voice port supports FXO/FXS/24 wire EM/24 wire audio/magnetic telephone interfaces. The FXO port is connected to the program-controlled switch, and the FXS port is connected to the user's telephone; Support caller ID function/reverse polarity billing/fax function;
◆The telephone interface supports the mutual dialing function between two sites;
◆The E1 interface complies with G.703 recommendation and adopts fully digital clock recovery and smooth phase-locked technology;
◆Optional SNMP network management and Console network management;
◆The telephone interface is equipped with lightning protection to meet the GB/T17626.5 (IEC61000-4-5) short-circuit current wave 8/20 μ s open circuit peak output voltage 6KV standard;
◆Multiple power supply options available: AC220V, DC-48V/DC24V, etc; Support AC+DC; AC+AC; Dual power modes such as DC+DC;
◆The DC-48V/DC+24V power supply has automatic polarity detection function, and there is no need to distinguish between positive and negative poles during installation.
Technical Specifications
◆ E1 interface
Equipment interface: The equipment interface complies with G.703 recommendation
Speed: 2048Kb/s ± 50ppm
Code type: HDB3
Impedance: Unbalanced 75 Ω/Balanced 120 Ω (Unbalanced with coaxial interface adapter, compatible with 75-2/3 coaxial cable)
Jitter characteristics: meet the recommendations of G.742 and G.823
Allowable attenuation of input port: 0-6dBm;
◆ FXS User Phone Interface
Ringing voltage: 75V
Ringing frequency: 25Hz
Two line input impedance: 600 Ω (off hook)
Return loss: 20dB
◆ FXO relay interface
Ringing detection voltage: 35V
Ringing detection frequency: 17Hz-60Hz
Two line input impedance: 600 Ω (off hook)
Return loss: 20 dB
◆ E&M 2/4-wire interface
E&M type: TYPE V
Maximum current of E-line: 22mA; saturation voltage: 3V
M-line constant current: 7mA; minimum detection current: 5mA
AD gain: 0dB;
DA gain: 0dB
2/4-wire input impedance: 600 Ω
Magnetic telephone interface
Ringing voltage: 75V
Ringing frequency: 25Hz
Two line input impedance: 600 Ω (off hook)
Return loss: 20dB
◆ Electrical and mechanical characteristics
System power supply: AC180V~260V; DC–48V； DC+24V
(Supports dual power redundancy backup)
Power consumption: ≤ 50W
Appearance structure: 485 (length) X200 (width) X45 (height) mm 19 inches 1U rack mounted
Weight: 3.8Kg per unit
◆ Environmental indicators
Working temperature: -10 ℃ -+60 ℃
Storage temperature: -40 ℃ -+85 ℃
Working humidity: 0% -95% (no condensation)
MTBF:>100000 hours
Application Solution
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