English 
11th Floor, Chuangbo Industrial Park, 177 Tianchen Road, High-tech Zone, Jinan City, Shandong Province, China
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The OTS-MS-4E1P 4E1 16-Channel Optical Transmission Terminal is a high-performance, compact multi-service optical solution designed for secure private networks of enterprise, government, and industry clients. This 1U 19-inch rack-mounted device leverages advanced optical multiplexing technology to integrate voice, Ethernet, and E1 services into a single optical fiber link, with 4 E1 ports, 4 Fast Ethernet ports, and 16 FXS/FXO voice channels. Supporting long-distance transmission up to 120 km and 1+1 optical link hot standby, it delivers cost-effective, reliable, and secure communication for private network deployment, making it the optimal choice for enterprise private network optical transmission and industry-specific dedicated communication systems.
This 1U rack-mounted multi-service optical multiplexer integrates E1, Ethernet, and voice transmission into a compact 19-inch 1U form factor, enabling easy integration into space-constrained equipment rooms and edge cabinets, reducing deployment complexity for enterprise and industry users.
Dual optical ports support 1+1 hot standby with seamless failover, paired with dual AC/DC redundant power inputs, ensuring 99.99% uptime for critical private network links, even during optical line or power supply anomalies.
4 Fast Ethernet ports support VLAN-based traffic separation, enabling secure and efficient data transmission for different business departments or service types, fully compliant with IEEE 802.3 Ethernet standards.
Up to 16 FXS/FXO interfaces support analog telephone services with caller ID capability, fully compliant with ITU-T G.703/G.823 for E1 circuits and ITU-T G.711 for voice coding, ensuring seamless compatibility with existing communication systems.
Parameter Category | Core Specifications |
Optical Interface | 2 optical ports with 1+1 hot standby Wavelength: 1310 nm / 1490 nm / 1550 nm (SM); 850 nm / 1310 nm (MM) Connector: LC Transmission Distance: 0–120 km Receiver Sensitivity: ≤ -28 dBm |
E1 Interface | 4 × E1 ports, compliant with ITU-T G.703/G.823 Coding: HDB3 Rate: 2.048 Mbps ±50 ppm Impedance: 120Ω balanced, RJ45 connector |
Ethernet Interface | 4 × 100 Mbps Fast Ethernet ports, 10/100M adaptive Standard: IEEE 802.3/802.3u Supports VLAN isolation, Auto-MDIX, full/half duplex auto-negotiation RJ45 connector |
Voice Interface | 16 × FXS/FXO ports, compliant with ITU-T G.711 Coding: A-law PCM, 64 Kbps per channel Frequency Response: 300–3400 Hz RJ45 connector |
Power & Environment | Dual AC/DC redundant power input Operating Temp: -10°C to +50°C Power Consumption: <15 W Form Factor: 19-inch 1U rack-mount |
Government & Public Security Private Networks: Delivers secure integrated transmission of voice, E1, and Ethernet services for government and public security dedicated networks, meeting strict confidentiality requirements.
Power & Energy Communication Systems: Provides reliable transmission for SCADA data, voice dispatch, and E1 signaling in power grid and energy systems, supporting stable infrastructure operation.
Enterprise & Industrial Private Networks: Offers cost-effective multi-service connectivity for factory campuses, branch offices, and remote industrial sites, simplifying enterprise network deployment.
Transportation & Infrastructure Communication: Enables integrated voice, data, and E1 transmission for metro systems, highways, and tunnel networks, adapting to harsh field operating environments.
Military Command & Control Networks: Delivers high-security, low-latency transmission for military command systems, ensuring reliable communication for mission-critical tasks.
We provide targeted customization for enterprise clients, system integrators, and industry solution providers to fit unique private network project requirements. Available services include optical module parameter tuning for specific transmission distances, port configuration adjustment, firmware optimization for industry-specific protocols, and full OEM/ODM branding services. All customized solutions strictly follow ITU-T and IEEE standards, ensuring perfect compatibility with existing private network systems.
Up to 120 km, based on the selected optical module configuration and fiber type.
Yes. All 4 Ethernet ports support VLAN-based traffic separation for secure transmission of different business services.
Yes. It supports dual AC/DC redundant power inputs, ensuring uninterrupted operation for private network communication links.
It is equipped with 16 FXS/FXO ports, supporting analog telephone services with caller ID for enterprise and government voice communication needs.
EASTCOM is a leading provider of optical communication solutions, with years of expertise in building reliable private networks for enterprise and industry clients worldwide. All our private network optical transmission equipment undergoes strict quality verification and environmental testing, ensuring stable long-term operation in complex scenarios. We offer full-lifecycle technical support from pre-sales solution design to after-sales maintenance, plus flexible customization to match your specific project needs. With a focus on technological innovation and customer-centric service, EASTCOM is your trusted partner for building secure, efficient, and cost-effective private communication networks.
