Refurbished telecoms platforms supply and repair
Nokia Global Express (GX) Series - Scalable compact modular optical transport
DTC provides comprehensive repair, supply, service, and technical support for the Nokia GX Series family of products.
About the Nokia GX Series
The Nokia 1830 Global Express (GX) is a flexible and scalable compact modular optical transport platform configurable for virtually any application from edge to core.
- The GX Series supports multiple generations of optical engines from 200G through 2.4 Tb/s per wavelength, with Super C and Super L functionality delivering up to 100 Tb/s per fibre
- It combines transponder, switchponder, and open line system capabilities in a single platform, with 300 mm and 600 mm chassis options for metro, long-haul, and subsea applications
- Provides carrier-grade reliability with full NEBS Level 3 compliance, redundant controllers, and multi-chassis management in a compact modular form factor
DTC is an independent supplier of telecoms equipment and has no affiliation with Nokia Networks
Delivery times, shipping and availability of the Nokia Networks GX Series from DTC
DTC is structured to support the Nokia Networks GX Series platform with speed, scale, and global reach.
Refurbished Nokia Networks GX Series hardware supply
The Nokia Global Express (GX) is a flexible and scalable compact modular optical transport platform configurable for virtually any networking application from edge to core. Available in 300 mm and 600 mm chassis depth options – including the G31 (1RU, 4 slots), G32 (2RU, 8 slots), and G42 (3RU, 4 slots) – the platform combines transponder, switchponder, and open line system capabilities in a single system. The GX Series is deployed globally for data centre interconnect, metro transport, long-haul backbone, and subsea applications where coherent optical capacity, spectral efficiency, and operational flexibility are paramount.
Multi-generation coherent optics from 200G to 2.4 Tb/s
The GX Series supports multiple generations of Nokia’s coherent optical engines, including ICE6 (800 Gbps per wavelength), ICE7 (1.2 Tbps per wavelength), and ICE-X pluggable 800G ZR/ZR+ modules. The CHM7 sled delivers a combined 2.4 Tbps (2 x 1.2 Tbps) per module, while ICE6 in the G42 chassis provides up to 6.4 Tbps of coherent bandwidth in 3RU. Capacity-reach performance scales from 800 Gbps over 1,000+ km to 400 Gbps over 7,500+ km, with ICE7 enabling 800G services beyond 3,000 km. Total fibre capacity reaches up to 100 Tbps per fibre pair.
Super C and Super L band support
The GX platform supports Super C-band transmission utilising 6.1 THz of spectrum – 27% more than the traditional 4.8 THz extended C-band – alongside full Super L-band at 5.0 THz. Combined Super C+L operation delivers 11.1 THz of total transmission spectrum, providing over 25% more capacity per fibre than conventional extended C-band solutions. This spectral expansion is enabled by ICE7 technology and is available across the G42 chassis, allowing operators to defer costly new fibre builds by extracting maximum capacity from existing infrastructure.
Integrated transponder, switchponder, and open line system
The GX Series uniquely combines Xponder (transponder, muxponder, switchponder) and OLS (open line system) sleds in the same chassis, with tunable wavelengths at 0.05 GHz granularity across extended C-band or L-band. ROADM configurations range from 12-degree through to 66-degree nodes with colorless, directionless, and contentionless add-drop. The platform supports OpenROADM MSA compliance, OpenConfig YANG models, and NETCONF/RESTCONF/gNMI APIs for multi-vendor interoperability and SDN integration. Carrier-grade reliability is provided through redundant controllers, full NEBS Level 3 compliance, and multi-chassis management.
Nokia Networks GX Series repair services
DTC provides specialist repair and lifecycle support for Nokia Global Express (GX) platforms, focused on restoring complex coherent optical transport hardware to a fully serviceable state rather than offering best-effort fixes. Repairs are driven by detailed platform knowledge and structured fault isolation, covering coherent Xponder sleds, OLS line system modules, ROADM components, optical amplifiers, and chassis controllers across the G31, G32, and G42 variants.
Each repair is completed with defined test and verification processes aligned to GX Series operating requirements, ensuring repaired units can be reintroduced into live optical transport networks with confidence. This emphasis on validation, repeatability, and long-term sustainment allows operators to extend the operational life of deployed GX Series systems while controlling cost and risk.
DTC also provides hands-on technical support and break/fix services for the Nokia GX Series, helping resolve faults quickly and keep your network operational without reliance on OEM maintenance contracts.
Associated Nokia Networks GX Series part numbers
| Part Number | Description | HECI Code | OEM |
|---|---|---|---|
| 3KC49926AA | AIR FILTER - PSS8 | Nokia Corporation | |
| 8DG59319AA - RSA 1830 Central Shelf | Alcatel-Lucent S.A. | ||
| 8DG59248AA - 1830PSS-1GB | Alcatel-Lucent S.A. | ||
| 8DG5924AB - SSY Equipment Controller | Alcatel-Lucent S.A. | ||
| 8DG59424AA - INV | Alcatel-Lucent S.A. | ||
| 8DG15428AA - STM 64 PORT XFP | Alcatel-Lucent S.A. | ||
| 8DG59242A - POWER FILTER 50A BREAKER SSY EQUIP | Alcatel-Lucent S.A. | ||
| 8DG59243AA - FAN | Alcatel-Lucent S.A. | ||
| 8DG15432AA | Telefonaktiebolaget LM Ericsson | ||
| 1830PSS32 | Alcatel-Lucent S.A. |
Warranty and risk mitigation – why source outside the OEM?
Warranty, quality, and risk mitigation
DTC supplies fully warrantied platforms and parts across all network layers, supported by defined SLAs and quality-controlled repair services. All recovered equipment is inspected, tested, and audited at platform, part number, serial number, and software revision level. These processes are governed by ISO 9001-certified quality management systems, ensuring consistent performance, traceability, and reduced operational risk.
End-to-end audit trails are maintained from collection through resale, repair, or recycling, with transparent inventory visibility and regular reporting. This ensures customers retain full control, compliance, and confidence in the condition and provenance of every asset.
Why source outside the OEM?
Sourcing through DTC provides a cost-efficient alternative to OEM supply chains while maintaining enterprise-grade reliability. Independent sourcing enables faster access to spares through in-house, multi-vendor inventory and continued support for legacy and end-of-life platforms no longer available from manufacturers.
Vendor-agnostic sourcing also simplifies procurement across mixed-vendor networks, while reuse and refurbishment support sustainability goals by extending asset life and reducing the environmental impact associated with manufacturing new equipment.
Nokia Networks GX Series technical specifications
| Platform Type | Scalable compact modular optical transport platform |
| Primary Technologies | DWDM, coherent optics (ICE6/ICE7/ICE-X), OTN switching, Packet-OTN, CDC-F ROADM |
| Architecture | Modular photonic service switching platform with coherent optical engines, multi-degree ROADM, and non-blocking OTN switching fabric |
| Target Applications | Metro and regional DWDM networks, ultra-long-haul backbone transport, data centre interconnect (DCI), packet/OTN aggregation, multi-service transport |
| DWDM Channel Spacing | 100 GHz (standard ITU grid), 50 GHz Flexgrid (88 channels) |
| Total WDM Spectrum | 4,800 GHz (C-Band); 9,600 GHz (C+L Band – doubles capacity) |
| Optical Bands | C-Band (standard), L-Band (extended), Super C+L band operation |
| Coherent Engine – ICE6 | 1.6 Tbps dual-wavelength (2 x 800G); 7 nm CMOS DSP with multi-channel PIC; up to 130 GBd; less than 0.2 W/Gbps |
| Coherent Engine – ICE7 | 1.2 Tbps per wavelength; 5 nm CMOS DSP; up to 140 GBd; 3,000+ km reach at 800G |
| Coherent Engine – ICE-X | 800G single-wavelength; 3 nm DSP; pluggable QSFP-DD form factor; optimised for ZR/ZR+ applications |
| Coherent Engine – PSE-6s | 1.2 Tbps per wavelength; 130/140 GBd capable; upgrade path for legacy 1830 PSS platforms |
| Supported Line Rates | 100G, 200G, 400G, 600G, 800G, 1.0 Tbps, 1.2 Tbps per wavelength |
| Maximum Per-Wavelength Rate | 1.2 Tbps (with PSE-6s/ICE7 engines) |
| Optical Reach | Up to 7,500 km unregenerated at 100G; 3,000+ km at 800G |
| ROADM Architecture | C-F (Colorless-Flexgrid), CD-F (Colorless, Directionless-Flexgrid), CDC-F (Colorless, Directionless, Contentionless-Flexgrid) |
| ROADM Degree Support | 4, 9, 20, or 32 directions (iROADM32 with twin-WSS) |
| ROADM Features | Integrated dynamic gain equalisation (DGE), optical channel monitors (OCM), wavelength selective switching in single line-card modules |
| ROADM Band Support | C-Band and L-Band; C+L upgradeable configurations |
| OTN Switching – PSS-8x | 4 Tbps non-blocking P-OTN with 2+1 electrical fabric |
| OTN Switching – PSS-12x | 12 Tbps non-blocking P-OTN with ultra-fast multi-layer restoration |
| OTN Switching – PSS-24x | 24 Tbps scalable to 48 Tbps; 4x interface density at half the power of previous generation |
| Client Interfaces | 100 Mbps to 400 GbE; multi-rate support for 10G, 40G, 100G, 400G |
| Protection Schemes | Per-wavelength 1+1 protection, optical line protection (OLP), OTN eSNCP, L0 GMPLS restoration, L1 GMPLS restoration |
| Optical Protection | OPSA, OPSB, OPS-Flex protection switch card variants |
| Platform Variants | GX G30/G31/G32 (ETSI 600/800 mm rack), GX G34c/G34Xc (compact ETSI 300 mm rack), PSS-8/16/32 (10-21 RU shelves, 300 mm front-access), PSS-HC (450 mm depth, front-to-back airflow) |
| Power Consumption | Less than 0.4 W/Gbps (standard platforms including optics); less than 0.2 W/Gbps (ICE6-enabled platforms) |
Contact us for Nokia Networks GX Series support
Request availability, delivery times, repair assessment or lifecycle support for your Nokia Networks GX Series environment.