Brief Introduction


Offering an intelligent, next-generation solution, the OptiX OSN 3500 II optical transmission system was developed by Huawei to efficiently transmit voice and data services on a single platform. Primarily deployed at the convergence and backbone layers of the Metropolitan Area Network (MAN), the OptiX OSN 3500 II can also be networked with other Huawei equipment to optimize customer investment.




OSN 3500II


722 mm (H) x 436 mm (W) x 295 mm (D)

Switch capacity

110Gbit/s (704 x 704 VC-4) higher order, 20 Gbit/s (8064 x 8064 VC-12) lower order

Service slots

15 slots for processing boards and 20 slots for interface boards

Supported interfaces

MSTP interfaces

STM-1/4/16/64, E1/E3/E4/T1/T3, FE/GE/10GE, DDN, IMA/ATM, FEC/EFECSAN, Video

WDM interfaces

40-channel DWDM interfaces, compliant with ITU-T G.694.1
8-channel CWDM interfaces, compliant with ITU-T G.694.2

Power Supply

DC: -48V DC or -60V DC
AC: 220V/110V AC

Clock synchronization

Line clock source
Tributary clock source 
Two external clock inputs/outputs (2 MHz or 2 Mbit/s)

Auxiliary interface

Orderwire interface, NNI connection interfaces
RS-232 remote maintenance interface, management serial interface, serial interfaces, 64 kbit/s codirectional data channel, 10M/100M NM interface, commissioning interface Alarm interface, Cabinet alarm indicator interface


 Large switching capacity


  • 110G high order, 20G low order


High integration

  • Subrack dimensions 722mm (H) x 436mm (W) x 295mm (D), 15 slots for processing boards and 20 slots for interface boards


Flexible networking capacity

  • Supports Mesh networking with plug-and-play network nodes

  • Supports dynamic increase of rate and capacity

  • Supports various networking topologies, including chain, ring, tangent rings, intersecting rings, etc

  • Supporting maximum 1 STM-64 four-fiber MSP rings, 2 STM-64 two-fiber MSP rings, 9 STM-16 four-fiber MSP rings, 12 STM-16 two-fiber MSP rings


Carrier-class protection

  • Mesh Protection and restorationASON

  • Distributed restorable rerouting protection

  • 5-level service dedicated protection scheme based on different SLA: Diamond, Gold, Silver, Copper and Iron services

  • SDH Network Protection

  • 2/4 fiber MSP Ring; 1+1, 1: n Linear MSP; SNCP/SNCMP/SNCTP; Fiber shared virtual path protection; Fiber shared MSP Ring; DNI (ITU-T G.842)

  • Service Protection

  • Ethernet: RPR, RSTP



Highly Reliable Design

  • 1+1 hot backup for system control boards, cross-connect and synchronous timing boards

  • 1+1 hot backup for power supply modules

  • Redundancy protection for fan modules

  • TPS protection

  • 1:n tributary protection for E1/T1/E3/T3/ E4/STM-1(e)/FE


Enterprise-focused Features

  • Intelligent ASON based Mesh network can against multi-node failures, improving network reliability by 10 times

  • Single-span transmission for a distance of 270km without a Raman amplifier, fewer REGs to reduce the network construction cost and facilitate the maintenance

  • Single-fiber bidirectional optical module to solve the problem of lack of fiber resource, and built-in WDM to meet the large bandwidth requirement


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