Huawei OSN 3500

Product Overview

The Huawei OSN 3500 ​ isn’t just another transport box—it’s the beating heart of metro evolution. Designed for carriers bridging legacy SDH and all-IP futures, this 10G/2.5G-ready workhorse merges ​TDM reliability​ with ​packet efficiency​ in a compact 730×496×295mm chassis. With its pioneering ​​”Unified Switching” architecture, the OSN3500 flexes across three critical modes:

• ​Pure TDM: Seamlessly interworks with legacy OSN1500/2500 networks.
• ​Hybrid TDM+Packet: Carries SDH/PDH alongside Ethernet/ATM on one platform.
• ​Pure Packet: Teams with PTN/RTN devices for IP RAN backhaul.

For utilities, banks, or mobile operators, it’s the only platform that lets you migrate at your pace—without forklifts or service disruption.

Detailed Specifications & Comparison

Notes: OSN3500’s hybrid slots eliminate “forklift upgrades” during TDM-to-IP migration—unmatched by OSN7500/1500B.

Strategic Procurement Guidance

​Choose OSN3500 if you need:​​

1. ​Legacy-to-IP Harmony​
   Migrate E1/TDM circuits while onboarding 5G fronthaul (10GE) or enterprise VPNs—all in one shelf.
2. ​Space-Smart Aggregation​
   Fit 15 service slots + 16 interface slots in 295mm depth—ideal for cramped central offices.
3. ​Carrier-Grade Timing​
   Sync 5G RANs with SyncE/1588v2—critical for financial grids or mobile macro sites.

​Scale Up/Down When:​​

• ​OSN7500: For metro cores demanding 100G/OTN (e.g., data center interconnect).
• ​OSN1500B: For cell-site access or remote branches with sub-1G needs.

Why OSN3500? The Unspoken Edge

Imagine a platform that doesn’t just transport bits—but orchestrates transitions. The OSN3500 solves the telco’s toughest paradox: ​demanding tomorrow’s bandwidth while honoring yesterday’s investments. Here’s why it’s your silent ally:

• ​​”Pay-As-You-Grow” Freedom​
  Start with SDH today. Add packet blades tomorrow. Evolve without ejecting hardware.
• ​Built-In WDM Muscle​
  Pack 80 wavelengths per fiber—bypassing external muxes and slashing rack clutter.
• ​Zero-Touch Resilience​
  TP-Assist OAM auto-detects fiber cuts in milliseconds, triggering sub-50ms protection switches.

• Huawei OSN3500 SDH Product Ordering Info

  List of Cross Connect Boards
  N1PSXCS	Super Cross-connect and Synchronous Timing Board (supporting packet features)
  N2PSXCSA
  N3PSXCSA
  N1GXCSA	General cross-connect and synchronous timing board
  N1EXCSA	Enhanced cross-connect and synchronous timing board
  N1UXCSA	Ultra cross-connect and synchronous timing board
  N1UXCSB	Ultra cross-connect and synchronous timing board (connected to the extended subrack)
  N1FXCSA	Full cross-connect and synchronous timing board
  N1SXCSA	Super cross-connect and synchronous timing board (only applicable in TDM mode)
  N1SXCSB	Super cross-connect and synchronous timing board (connected to the extended subrack)
  N1IXCSA	Infinite cross-connect and synchronous timing board
  N1IXCSB	Infinite cross-connect and synchronous timing board (connected to the extended subrack)
  N1XCE	Cross-connect and timing board for the extended subrack
  List of System Control Board
  N1GSCC/N3GSCC	System Control and Communication Board
  N4GSCC/N6GSCC
  List of packet processing boards
  N1PEX2	2-port 10 Gigabit Ethernet switching processing board
  N1PEG16	16xGE Ethernet processing board
  N1PEX1/N2PX1	1x10GE Ethernet processing board
  N1PEG8	8-port Gigabit Ethernet switching processing board
  List of packet interface boards
  N1CQ1	4-port channelized STM-1 CES optical interface board
  N1PETF8	8xFE electrical interface board
  N1MD75	Multi-protocol 32xE1 interface board (75 ohms)
  N1PEFF8	8-port FE optical interface board
  N1MD12	Multi-protocol 32xE1 interface board (120 ohms)
  List of EoD boards
  N1EDQ41	4-port 622/155 Mbit/s SDH optical interface Ethernet dual-mode multi-function processing board
  List of SDH boards
  N4SLD64/N1SLD64	2xSTM-64 optical interface board
  N4SFD64	2xSTM-64 optical interface board with the FEC function
  N1SL64/N2SL64/N4SL64	1xSTM-64 optical interface board
  N3SL16/N3SL16A	1xSTM-16 optical interface board
  N1SF16	1xSTM-16 optical interface board (with the outband FEC function)
  N1SF16E	1xSTM-16 optical interface board (with the outband EFEC function)
  N1SLD4/N2SLD4/N1SLD4A	2xSTM-4 optical interface board
  N1SL4/N2SL4/N1SL4A	1xSTM-4 optical interface board
  N1SLH1	16xSTM-1 signal processing board
  N1EU08	8xSTM-1 electrical interface board
  N2SLO1/N3SLO1	8xSTM-1 optical interface board
  N1SLQ1/N2SLQ1/N1SLQ1A	4xSTM-1 optical interface board
  N1SEP1	2xSTM-1 line processing board when interfaces are available on the front panel
  	8xSTM-1 line processing board when interfaces are available on the corresponding interface board
  N4SLO16	8xSTM-16 optical interface board
  N1SLO16	4xSTM-16 optical interface board
  N4SLQ16
  N1SLQ16
  N2SLQ16
  N1SLD16	2xSTM-16 optical interface board
  N1SL16/N1SL16A	1xSTM-16 optical interface board
  N2SL16/N2SL16A
  N3SLH41	16xSTM-4/STM-1 optical interface board
  N3SLQ41	4xSTM-4/STM-1 optical interface board
  N1SLQ4/N2SLQ4	4xSTM-4 optical interface board
  N1SLQ4A	4xSTM-4 optical interface board
  N1SLT1	12xSTM-1 optical interface board
  N1OU08	8xSTM-1 optical/electrical interface board (LC)
  N2OU08	8xSTM-1 optical interface board (SC)
  N1SL1/N2SL1/N1SL1A	1xSTM-1 optical interface board
  List of PDH boards
  N1SPQ4/N2SPQ4	4xE4/STM-1 electrical processing board
  N2PQ3	12xE3/T3 service processing board
  N1C34S	3xE3/T3 electrical switching interface board
  N1PL3/N2PL3	3xE3/T3 service processing board
  N1PQ1/N2PQ1	63xE1 service processing board
  N1D12B	32xE1/T1 electrical switching interface board
  N1PFL1	8xE1 optical processing board
  N1TSB8	8-port electrical switching interface board
  N1DM12	DDN service interface board
  N1MU04	4xE4/STM-1 electrical interface board
  N1D34S	6xE3/T3 electrical switching interface board
  N1PD3/N2PD3	6xE3/T3 service processing board
  N1PL3A/N2PL3A	3xE3/T3 service processing board (Interfaces are available on the front panel.)
  N1PQM	63xE1/T1 service processing board
  N1D12S	32xE1/T1 electrical switching interface board (120 ohms)
  N1D75S	32xE1 electrical switching interface board (75 ohms)
  N1DX1/N3DX1	DDN service accessing and converging board
  N1DXA	DDN service converging and processing board
  List of EoS boards
  N1EFT8/N2EFT8	8xFE/16xFE transparent transmission board
  N1EFT8A/N2EFT8A	8xFE transparent transmission board
  N1EFS0A	16xFE switching and processing board
  N1EFS0/N2EFS0	8xFE switching and processing board
  N4EFS0/N5EFS0
  N1EFS4/N2EFS4/N3EFS4	4xFE switching and processing board
  N1EFF8/N1EFF8A	8x100M Ethernet optical interface board
  N1ETF8/N1ETF8A	8x100M Ethernet twisted-pair interface board
  N1ETS8	8×10/100M Ethernet twisted pair interface switching board
  N1EAS2/N3EAS2	2x10GE Layer 2 switching and processing board
  N1EGSH	16xGE switching and processing board
  N1EMS4	4xGE and 16xFE switching and processing board
  N1EMS2	2xGE and 16xFE switching and processing board
  N1EGS/4N3EGS4	4xGE switching and processing board
  N1EGT/2N2EGT2	2xGE transparent transmission board
  N2EGS2, N3EGS2	2xGE switching and processing board
  List of ATM boards
  N1ADL4/N1IDL4	1xSTM-4 ATM service processing board
  N1ADQ/1N1IDQ1	4xSTM-1 ATM service processing board
  List of RPR boards
  N2EGR2	2xGE ring processing board
  N2EMR0	12xFE and 1xGE ring processing board
  List of SAN/video boards
  N1VST4	4-port video service transparent transmission board
  N1MST4	4-port multi-service transparent transmission board
  List of PCM boards
  N1FXSO12	12-port FXS/FXO processing board
  N1FXO12	12-port FXO processing board
  N1FXS12	12-port FXS processing board
  N1AT6	6-port 2/4 wire and E&M processing board
  List of WDM boards
  TN11CMR4	4-channel optical add/drop multiplexing board
  TN11MR2	2-port optical add/drop multiplexing board
  TN11MR4	4-port optical add/drop multiplexing board
  N1LWX	Arbitrary bit rate wavelength conversion board
  N1FIB	Filter isolating board
  TN11CMR/TN11CMR2	2-channel optical add/drop multiplexing board
  N1MR2C/N1MR2A	2-channel optical add/drop multiplexing board
  N1CMD2	2-channel bidirectional optical multiplexer and demultiplexer board
  TNN1XMD2	2-channel bidirectional optical add/drop multiplexing board
  List of auxiliary boards
  N1AUX	System auxiliary interface board
  N1FAN	Fan board
  List of optical amplifier boards and dispersion compensation boards
  N1BPA/N2BPA	One-channel power amplifier and one-channel pre-amplifier board
  N1DCU/N2DCU	Dispersion compensation board
  N1BA2	Two-channel power amplifier board
  N1COA, 61COA,62COA	Case-shaped optical amplifier
  TN11OBU1/TN12OBU2	Optical booster amplifier board
  N1RPC01/N1RPC02	Backward Raman driving board (external)
  lists all power boards and their applicable products.
  UPM	Uninterruptible power module
  N1PIUA	Power interface board (supporting 1100 W enhanced subrack.)
  N1PIU	Power interface board (supporting standard subracks)
  N1PIUB	Power interface board (supporting type III subracks)

​In essence:​​ The OSN3500 isn’t hardware. It’s ​the bridge between eras—where every VC4, Ethernet frame, and wavelength coexists gracefully. For networks aging gracefully while racing toward 5G/IoT, this is your cornerstone.