Positron GAM for Copper

“Fiber to the Home” is far from being the only and most efficient technology to deliver Gigabit Internet access to subscribers. Retrofitting an existing (brownfield) Multi-Dwelling Unit (MDU) with fiber is complex and expensive.

Positron's G.hn Aggregation Multiplexer (GAM) addresses the key challenge of delivering Gigabit Internet access to subscribers in MDUs and MTUs as well as dense clusters of Single Family Unit (SFU) homes. It leverages the existing telephone or coaxial infrastructure and instantly delivers near symmetrical Gigabit services at a fraction of the cost of other alternatives such as G.fast.

GAM-12-M and GAM-24-M


The Positron GAM-12-M and GAM-24-M for Copper can deliver Gigabit services on telephone wires either on a single pair in SISO mode (500 feet or 150 meters) or using two (2) pairs on a single port (800 feet or 250 meters) in MIMO mode.


The ITU-T G.9960 G.hn Wave-2 standard is designed to leverage the existing telephone, UTP, CAT-3 or CAT-5/5e wiring to deliver a Gigabit Internet service to each subscriber without the complexity and delays associated with in-building fiber installation. G.hn is increasingly used as an Access Technology by Operators looking to simplify their access network and backend infrastructure with an Ethernet-like technology that is highly scalable without some of the inherent complexity of DSL-related technologies sush as G.fast.

With G.hn, Operators deliver advanced services such as Gigabit High Speed Residential Internet and 4K IPTV without the high capital investment, construction, disruption and operational expenses associated with a fiber retrofit. Each G.hn subscriber port supports up to 1.7 Gbps of dynamically allocated bandwidth for near symmetrical Gigabit services over the existing telephone wire. The Positron GAM solution is MEF CE 2.0 compliant and is ideally suited to deliver Business Ethernet services in MDU and/or MTU deployments.

mimo chart

Positron’s G.hn technology provides managed non-blocking Gigabit bandwidth services to subscribers over existing telephone wire or coaxial cable on extended distances, at a lower cost and with reduced complexity compared with G.fast or DOCSIS.


 

Positron GAM Performance over Copper

gam mimo

When operating on twisted pair(s), G.hn delivers Gigabit services either on a single pair (SISO) or using two (2) pairs on a single port (MIMO) to extend the reach of a Gigabit service to 800 feet (250 meters). The results were obtained by the TNO Institute (Netherlands) on 24 AWG (0.51 mm) wiring.

The Positron GAM has a non-blocking CE 2.0 Carrier Ethernet Core ASIC to reliably deliver managed Gigabit services. The GAM is a Fiber to the Distribution Point (FTTDp) solution that is typically installed inside a wiring closet. Each GAM comes with two (2) 10 Gigabit SFP+ interfaces to support any type of fiber or PON standards (using an ONT as required). These SFP+ ports are also used to support additional GAM devices in medium to large MDUs and share the fiber backhaul link. Gigabit solutions delivered over Fixed Wireless Access (FWA) are also supported by connecting the 1-10Gbps Ethernet feed into an SFP+ port of the GAM.

G.hn Delivers Superior Bandwidth

G.hn consistently delivers superior bandwidth over twisted pair wire and coaxial cable. G.hn dynamically adjusts the allocation of the bandwidth between the downstream and upstream direction to reflect the real-time traffic conditions for optimal and near-symmetrical performance under all conditions.

With the Positron GAM, high-speed Gigabit Internet Services are much more stable than G.fast. The GAM software extends its management capabilities to the G.hn end-point (aka G.hn to Ethernet Bridge) devices (such as the Positron G1000). The GAM hardware enforces per-subscriber bandwidth profiles and guarantees a predictable and balanced use of the backhaul link at all times for value-added services such as IPTV, streaming and telephony. Its extensive support for VLAN (including Q-in-Q) complies with the Broadband Forum TR-101 specification allowing for seamless integration with the operator fiber services and the OSS and BSS functions already in place. The service OAM capabilities of the GAM provide real-time information to the operator about the overall grade of services without any additional cost or complexity.

G.hn is used by large Operators in multiple markets with a strong base in South East Asia where it provides Gigabit services into MDU / MTU of all sizes and for residential clusters. These Operators leverage the robustness of G.hn and its predictable bandwidth to scale to large deployments that complement their investment in their Passive Optical Network (PON) infrastructure.

As is the case with other ITU DSL and PON standards, G.hn offers extensive management and troubleshooting features and capabilities to simplify its deployment, activation and support. These management capabilities cover all operational aspects, from dealing with wiring issues to service-aware QoS and bandwidth management. The G.hn ecosystem is very solid and includes verified interoperability between the three (3) main chipset vendors based on extensive testing by the University of New Hampshire (UNH) lab.

The Positron GAM is available in 24 and 12 port configurations for either coaxial cable or twisted pairs with support for Single Input Single Output (SISO) mode, (1 pair per port) and Multiple Input Multiple Output (MIMO) mode (2 pairs per port). Using MIMO instead of DSL pair bonding means that there is no need to allocate two (2) ports to serve a single subscriber, lowering costs and avoiding the complexity of pair bonding.


 

GAM Documents

GAM Solution Brief

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GAM Datasheet

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G1000 Datasheet

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Article on Positron GAM in Broadband Communities Magazine
October 2019

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