22 Apr Advantages of the LDA NEO+ system in multiservice and multi-site networks
The LDA NEO+ system is designed for efficient integration into complex data networks, especially in multiservice and multi-site environments such as metro networks with multiple stations, airports with several terminals, or distributed industrial facilities.
Precise synchronization via PTP and multicast addressing
One of the key features of LDA NEO+ is the precise synchronization of all network devices using PTP (Precision Time Protocol), in compliance with the IEEE 1588 standard.
PTP typically distributes time information using multicast messages over IP, allowing efficient and scalable synchronization across multiple nodes without generating redundant traffic. This time precision is critical in voice evacuation systems, where messages must be played simultaneously and with imperceptible latency across all zones.
Compatibility with professional audio standards
The LDA NEO+ public address and voice evacuation system uses the AES67 digital audio transport protocol, widely adopted in the professional audio sector.
This standard encapsulates audio into multicast streams, which is essential for real-time transmissions—similar to other leading protocols used in modern professional audio networks.
Unlike unicast, which does not scale well when a stream must reach multiple receivers, multicast minimizes latency and optimizes network resource usage.
Integration into multiservice networks using VLANs and multicast routing
LDA NEO+ enables segmented integration into multiservice networks through site-dedicated VLANs. For example, each station in a metro network can operate on its own subnet, enhancing the security, efficiency, and overall performance of the network.
The system architecture supports Layer 3 multicast routing technologies, allowing devices to correctly receive multicast streams using:
- IGMP Snooping: to monitor multicast group subscriptions.
- IGMP Filtering: to restrict access to specific groups based on policies.
- PIM (Protocol Independent Multicast): to route multicast traffic across network segments.
This approach reduces network load and enables granular, efficient control of audio streams.
Inter-site traffic management with LDA NEXO HUB
The LDA NEXO HUB device, installed at each site, enables smart traffic management between the central infrastructure and local subnets. Only calls directed to specific zones are forwarded to the corresponding sites.
Local audio sources remain confined to their environment, avoiding unnecessary traffic on the main network. This reduces congestion, improves scalability, and optimizes system performance.
Want to know how to integrate LDA NEO+ into your existing infrastructure? Contact us or visit the NEO+ system page for more technical information.