ZHONE

Zhone provides broadband access and telecommunications solutions designed to connect traditional network infrastructures with modern IP-based broadband services.

Its portfolio spans legacy TDM technologies, DSL access systems, broadband aggregation platforms, and customer premises equipment for residential and business environments. This approach enables service providers to maintain existing infrastructure while progressively transitioning toward higher-capacity packet and fiber-based networks. Zhone has specifically developed access architectures to support migration from legacy circuit technologies to packet-based networks and from copper to fiber.

TDM Networks and Applications

Zhone provides solutions designed to support telecommunications environments that continue to rely on Time Division Multiplexing (TDM) technologies.

These systems help service providers maintain voice and data services across established network infrastructures while providing an evolutionary path toward IP-based access technologies.

TDM-related Zhone platforms have supported technologies such as T1/E1 and TDM over packet environments, allowing operators to preserve existing services while introducing newer broadband architectures. Zhone's traditional portfolio also includes access products supporting legacy TDM, SDH, and PDH technologies.

Key capabilities include:

• TDM network access
• T1/E1 connectivity
• Legacy voice and data services
• TDM-to-packet migration
• TDM over IP applications
• Integration with broadband access infrastructure
• Support for existing telecommunications equipment
• Evolution toward IP-based networks

IP and ATM DSLAMs

Zhone DSLAM solutions are designed to aggregate subscriber DSL connections and connect access networks with service-provider infrastructure.

The company's historical product portfolio included DSLAM platforms such as the 8000/12000 series, as well as scalable VDSL2 and Active Ethernet systems. These products were designed to aggregate broadband traffic from copper subscriber loops and provide connectivity toward higher-level network infrastructure.

Zhone's broader access architecture supports the coexistence of legacy and next-generation technologies, allowing operators to evolve their networks without necessarily replacing all existing infrastructure at once.

DSLAM applications include:

• ADSL and DSL broadband access
• VDSL2 broadband services
• Subscriber traffic aggregation
• IP broadband delivery
• ATM-based access environments
• Voice and data service delivery
• Central office deployments
• Remote access deployments
• Multi-service broadband networks

IP and ATM Broadband Access

Zhone's access technologies have been designed to support different generations of broadband infrastructure, including packet-based IP networks and established ATM access environments.

This flexibility is particularly valuable for operators managing networks with mixed technology generations. Legacy ATM or DSL infrastructure can continue supporting subscribers while newer IP, Ethernet, and fiber technologies are progressively introduced.

The underlying objective is to provide an evolutionary migration path rather than forcing an immediate replacement of the entire access network.

Residential and Business Class CPE

Zhone provides Customer Premises Equipment (CPE) designed for residential subscribers, businesses, and other end-user environments.

Historically, the portfolio included wireline and wireless DSL modems, Ethernet-over-copper solutions, and zNID Optical Network Terminals. These products were designed to provide subscriber-side connectivity for voice, data, video, and broadband services.

Zhone's current portfolio continues this customer-edge approach with residential ONTs, Wi-Fi gateways, and business-oriented FiberLAN solutions for high-speed broadband connectivity.

CPE solutions can support:

• Residential broadband access
• Business broadband connectivity
• DSL services
• Ethernet connectivity
• Fiber access
• Voice services
• IPTV and multimedia services
• Wireless connectivity
• Enterprise network access

Multi-Service Access Architecture

Zhone access platforms are designed to aggregate different types of subscriber traffic into a unified access infrastructure.

Depending on the platform and generation, this can include:

• Voice
• Data
• Video
• Ethernet
• DSL
• TDM
• Fiber
• Wireless services

This multi-service approach allows service providers to operate diverse subscriber technologies through a common access strategy. Zhone's historical SLMS architecture was specifically designed around multiple classes of subscriber services rather than being tied to a single protocol or physical medium.

Bridging Legacy and Next-Generation Networks

One of the key strengths of Zhone's access portfolio is its ability to support network evolution.

Service providers can use established DSL, TDM, and access equipment while introducing newer technologies such as Ethernet, GPON, XGS-PON, and other fiber-based solutions.

Zhone's current portfolio continues to include a Traditional Systems category for existing customers who have not yet migrated to its newer Velocity platform. This portfolio includes legacy access concentrators, DSLAMs, POTS interfaces, T1/E1 connectivity, and related access cards.

Broadband Aggregation and Access

Zhone broadband aggregation platforms can consolidate traffic from copper and fiber access networks and connect subscriber services to the wider service-provider infrastructure.

Historically, these systems were deployed in environments including central offices, remote offices, points of presence, data centers, colocation facilities, and large enterprise networks.

This makes Zhone solutions suitable for network operators managing geographically distributed access infrastructure and mixed-generation technologies.

Network Evolution and Migration

Zhone solutions are designed to help operators evolve their networks while protecting existing infrastructure investments.

A typical migration strategy can involve:

1. Maintaining existing TDM and DSL services.
2. Aggregating legacy subscriber traffic through access platforms.
3. Introducing IP and Ethernet-based services.
4. Expanding fiber-based access infrastructure.
5. Deploying modern ONTs and business gateways.
6. Gradually retiring legacy equipment as subscriber requirements evolve.

This evolutionary model can help reduce service disruption and avoid unnecessary large-scale network replacement.

Key Benefits

• Legacy Network Support: Continue operating established TDM, DSL, and other access technologies.
• Technology Migration: Provide an evolutionary path from circuit-based infrastructure to IP and packet networks.
• Multi-Service Access: Support voice, data, video, Ethernet, and broadband services.
• Flexible Broadband Delivery: Serve both residential and business subscribers.
• Infrastructure Protection: Extend the useful life of existing network investments.
• Scalable Access: Deploy solutions across central offices, remote locations, and subscriber premises.
• Modernization Ready: Transition progressively toward Ethernet and fiber-based broadband technologies.

Typical Applications

Zhone solutions can be deployed for:

• Telecommunications service providers
• Broadband access networks
• DSL broadband services
• TDM network modernization
• IP and ATM access networks
• Central office infrastructure
• Remote access networks
• Residential broadband
• Business broadband
• Voice and data services
• Multi-service access networks
• Legacy network migration

Reliable Connectivity Across Network Generations

Zhone combines broadband access, subscriber connectivity, and legacy network support to provide service providers with a practical path between established telecommunications infrastructure and next-generation broadband networks.

From TDM and DSL access systems to IP/ATM DSLAMs and residential and business CPE, Zhone technologies can support the continued operation of existing networks while enabling a gradual transition toward Ethernet, IP, and fiber-based connectivity.

For service providers managing complex, multi-generation infrastructure, Zhone provides an access architecture designed to keep existing services connected while preparing the network for the next stage of broadband evolution.