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This equipment combines FXS/FXO voice, RS232 serial data, and Ethernet traffic over E1 links, providing a reliable solution for military, power grid, and public safety communications networks.
Model | E1 Interfaces | Ethernet Interface | Telephone Interface | Other Interfaces | Power Supply | Dimensions |
| PCM-30B | 1 port | - | Supports 30 channels, supports FXS/FXO, magnetic, hotline and other interfaces, and supports two-wire/four-wire audio. | Support RS232 asynchronous data transmission | AC/DC/ dual power supply | 19-inch 1U/19-inch 6U |
| PCM-8T | 1 port | 2-way, switching, supporting VLAN | Supports 8 channels, supports FXS/FXO, magnetic, hotline and other interfaces, supports two-wire and four-wire audio. | Support RS232 asynchronous data transmission | AC | Desktop / 19-inch 4U |
PCM-SV24 | 1 port | 1 port | Supports 8 channels, supports FXS/FXO, magnetic line, etc. interfaces, supports two-wire/four-wire audio. | Support RS232 asynchronous data, support synchronous V.24 data, and support serial port network management. | AC/DC/ dual power supply | 19-inch 1U |
Utilizes advanced large-scale integrated circuits and integrated optical transceiver components, offering low power consumption and high reliability
Modular design with high integration, ensuring stable and reliable performance.
Supports various telephone interfaces: FXS, FXO, magneto (magnetic ring), and hotline.
Supports 2-wire/4-wire audio transmission.
Supports Ethernet signal transmission.
Supports RS232 data transmission.
Provides 2 E1 trunk interfaces, supporting 1+1 backup and ADM (Add-Drop Multiplexing) networking.
2 E1 ports support bonding mode for Ethernet transmission, with a maximum bandwidth of 3.84 Mbps.
Supports Caller ID (CID) display.
Dual power supply (AC 220V / DC -48V) for high reliability and user convenience.
Comprehensive status display for easy maintenance and management.
E1 Interface
Line Coding: HDB3
Line Rate: 2.048 Mbps ±50 ppm
Impedance:75Ω (Unbalanced)
120Ω (Balanced)
Physical Connector:BNC (75Ω) / RJ45 (120Ω)
Compliance Standards: ITU-T G.703, G.704
Jitter Performance: Meets G.704 & G.823
Interface Type: BNC / RJ45
FXS/FXO Interface
Impedance:FXO: 200Ω + 680Ω || 0.1μF
FXS: 200Ω + 560Ω || 0.1μF
Frequency Response: 300–3400 Hz (-0.6 to +3 dB)
Physical Connector: RJ45
Magneto (Magnetic Ring) Interface
Frequency Response: 300–3400 Hz (-0.6 to +3 dB)
Ring Signal: 75V (55–90V), 25Hz (20–30Hz)
RS232 Interface
Data Rate: 300–19,200 bps
Physical Connector: RJ45
Ethernet Interface
Standards: IEEE 802.3 / 802.3u
Speed & Duplex:10/100 Mbps auto-negotiation
Full-duplex / Half-duplex auto-sensing
Auto-MDI/MDIX: Supports both crossover and straight-through cables
Transmission Rate: N×64 Kbps (N=1–60)
Physical Connector: RJ45
Voice Encoding & Signaling
16-slot signaling (ITU-T G.732 compliant)
PCM Encoding: A-law, 64 Kbps per channel (ITU-T G.711 compliant)
Power Supply
Dual Input Options:-48V DC (-36V to -72V)
220V AC (165V–265V)
Power Consumption: <30W
Mechanical Structure
Rack-Mountable: 19-inch, 1U heigh
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