VeeCOM DHODT-LMXE.VX

VeeCOM DHODT-LMXE.VX - SDH/IP/MPLS/PTN Hybrid Metro Access Multiplexer

Overview

VeeCOM DHODT-LMXE.VX is a carrier-class hybrid SDH/IP/MPLS/PTN multiplexer. By integrating SDH and IP technologies on a single platform at the metro access layer, it enables seamless migration of legacy SDH services to new IP/MPLS-based networks. GE/10GE NNI (Network-to-Network Interface) optical connections allow direct attachment to IP/MPLS/PTN backbone networks. High Ethernet switching capacity, end-to-end OAM (Operation Administration Maintenance), and advanced management features make it the preferred platform for energy and critical infrastructure projects. The 4U chassis with 22-slot modular design (8 aggregate slots + 14 tributary slots) provides flexible service provisioning and advanced topology support.

Technical Specifications and Capabilities

Architectural Design and Topology Support

The DHODT-LMXE.VX offers flexible design through separate aggregate and tributary side configurations. The aggregate side hosts uplink SDH (STM-4/16/64) and NNI GE/10GE connections, while the tributary side terminates user services (E1, C37.94, Ethernet). A full-mesh cross-connect matrix between these sides provides flexible service routing. From a topology perspective, the system supports geometries ranging from simple chain networks to star rings, tangent rings, and even intersecting rings. This flexibility is particularly valuable in electric distribution networks (SCADA), railway systems (signaling), and power plant communications.

Protection and OAM Features

The DHODT-LMXE.VX meets critical infrastructure's 99.99% availability requirements through multilayered protection architecture. At the SDH layer, 1+1 MSP (Multiplexer Section Protection) provides active-standby protection on STM uplinks with switchover within 50ms. SNCP (Subnetwork Connection Protection) provides end-to-end protection at the VC-12 level. MPLS-TP ring/linear protection enables LSP-based protection in modern IP/MPLS networks. From an OAM perspective, SyncE clock synchronization provides accurate timing for time-critical applications like SCADA, and IEEE 1588v2 PTP delivers nanosecond-level clock accuracy. C37.94 input enables direct connection and synchronization of PMU (Phasor Measurement Unit) devices.

Application Areas and Use Cases

VeeCOM DHODT-LMXE.VX is widely deployed in the following critical infrastructure and metro access network applications:

• Energy Transmission and Distribution: SCADA systems, transmission line communications, PMU data collection, power plant communications
• Railway Systems: Train signaling (CBTC), train speed control, inter-station data
• Water Transmission Networks: Dam control, pump station management, water quality monitoring
• Airports: Air traffic control, landing systems, airport operations centers
• Oil and Natural Gas: Pipeline control, pumping stations, quality monitoring
• Telecommunications Access: Metro ring networks, ISP access points, operator network edges

Simgenet's Role and Services

Simgenet serves the VeeCOM DHODT-LMXE.VX platform in the Turkey region as an energy sector and critical infrastructure specialist. During system design, Simgenet defines network topology (ring, star, mesh) to match SCADA/EMS requirements, performs capacity planning, and develops C37.94 PMU integration strategies. During procurement, the company supplies energy sector-specific cards (SDH terminal, media converter) and software configurations, and performs pre-testing. During installation and commissioning, Simgenet physically terminates field E1 leased lines from energy utilities, validates PMU clock synchronization, and verifies MSP/SNCP protection mechanisms. During long-term operations, Simgenet assists with software updates to the DHODT-LMXE.VX system and supports achievement of energy sector KPIs (uptime, data quality).