OptiX OSN 3500 Intelligent Optical Transmission System
The OptiX OSN 3500 is an intelligent optical switching system with “dual core" architecture. That is, the OptiX OSN 3500 can be used in packet mode or in TDM mode. When used in conjunction with other Huawei equipment, the OptiX OSN 3500 supports various networking applications, such as the pure packet mode application, hybrid networking application (overlay networking of the packet mode and TDM mode), and pure TDM mode application. By using a proper networking solution, the data service and conventional SDH service can be processed in an optimal manner. The OptiX OSN 3500 transmits voice and data services on the same platform with high efficiency.


Multi-service Provisioning

To meet various service interface requirements in metro networks, MSTP products provide access for various services to simplify the transport network. Based on a single platform, the new-generation MSTP products support a broad range of services:
SDH services: STM-1(e/o), STM-4, STM-16, STM-64
PDH services: E1/T1, E3/T3, E4
N*64K services: V.35, Frame E1
Ethernet services: Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet
ATM/IMA services: 2M, 34M, 155M, 622M ATM, IMA E1
Storage services: Fiber Channel, FICON, ESCON, DVB-ASI
Built-in WDM: 2.5G, 10G, and any service access rate from 34 Mbit/s to 2.7 Gbit/s.

Intelligent Feature

New-generation MSTP products support distributed ASON features with high reliability, easy maintenance, and excellent interoperability with legacy networks:

01. High Reliability

Restoration to any available resource including legacy and microwave SDH networks
Multi-failure resistance on any topology with SLA including 1+1 permanent protection
Any granularity (VC12/VC3/VC4) intelligence

02. Easy Maintenance

Revertible to original route when failure is fixed
Automatic synchronization to simplify planning of complicated topologies
Network planning tool (MDS) for fast network design, simulation, and expansion
Service level alarm report and performance monitor on control plane, and easy failure location and network health diagnosis

03. Excellent Interoperability

Seamless migration between legacy and ASON services
End to end service provisioning across legacy and ASON hybrid networks
Permanent 1+1 feature to SNCP of legacy networks with path correlation
ASON+VCAT+LCAS with guaranteed Ethernet bandwidth and bandwidth utilization ratio

Compatible with Legacy, Adaptable to Future

New-generation MSTP products use a universal switch and native circuit service processing boards to provide native circuit switching capability, thus offering optimum transport quality for TDM services.
Each device has three different applications, to accommodate different service development stages. MSTP mode is used for dominant TDM services, hybrid mode is used mainly for coexistent TDM and IP services, and packet mode is used for dominant IP services. The three different application modes can be easily transformed by simply expanding the service cards.

TDM and Packet modes are compatible for efficient network integration. The innovative bridge technology allows for seamless interoperability of TDM networks and packet networks (regarding service provisioning, DCN, clocks, and E2E management)..

Long-haul Transmission Solution

New-generation MSTP provides various types of LH transport solutions, such as FEC, REG, ROPA (Remote Optical Pump Amplifier), and Raman.
FEC improves OSNR tolerance which enables long distance transmission.
REG provides a cost-effective electrical regenerator solution for STM-16/STM-64 LH transmission.
ROPA enables 70-dB single hop transmission.
Raman enables 68-dB single hop transmission.
ROPA+Raman enable 80-dB single hop transmission.

System Features
Subrack dimensions 722 mm (H) x 497 mm (W) x 295 mm (D)
Switching capacity Packet: 100 Gbit/s. TDM: 200 Gbit/s (high order), 20 Gbit/s (low order)
Service slots 15 slots for processing boards and 16 slots for interface boards
Highly reliable design 1+1 hot backup for power supply modules
1+1 hot backup for system control boards
1+1 hot backup for cross-connect and synchronous timing boards
Redundancy protection for fan modules
Supported interfaces Packet transport interfaces E1, STM-1, FE/GE/10GE
MSTP interfaces STM-64/16/4/1, E1/E3/E4/T1/T3, FE/GE/10GE, DDN, IMA/ATM, SAN
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 –72 to –38.4V DC; 110/220V AC (External module)
Operation Environment Temperature Relative Humidity
Long term: 0°C to 45°C 10% to 90%
Short term: –5°C to 55°C 5% to 95%
Packet Transport Features
Service features E-Line and E-LAN
TDM PWE3: CESoPSN and SAToP, compression of idle timeslots
Broadcast packet suppression
QoS features H-QoS scheduling and traffic shaping
DiffServ mode based on traffic classification
Simple traffic classification, complex traffic classification, per hop behavior (PHB), and ACL
Committed access rate (CAR)
PQ scheduling priority, weighted fair queuing (WFQ), and PQ+WFQ queuing
Tail drop and weighted random early detection (WRED)
Eight priority queues
Shaping based on port scheduling priority
Hardware-based OAM MPLS OAM Supports both LSP OAM and PW OAM:
CV (Connectivity Verification)
FFD (Fast Failure Detection)
FDI (Forward Defect Indicator)
BDI (Backward Defect Indicator)
Ethernet OAM ETH-CC (continuity check), ETH-loopback, ETH-link trace
Remote loopback, remote fault detection
RMON (RFC 2819)
MAC/PHY loopback
Carrier-class protection 1+1 and 1:1 Linear MSP, guaranteeing 50 ms switching time
1+1 and 1:1 protection for label switched path (LSP) and pseudo-wire (PW), guaranteeing 50 ms switching time
Multi-section pseudo-wire (MS-PW)
Link aggregation group (LAG) protection
Multi-chassis link aggregation group (MC-LAG) protection
Dual-homing protection
Clock synchronization Two external clock inputs/outputs (2 MHz or 2 Mbit/s)
Two external time signals (1 pps+TOD)
Adaptive clock recovery (ACR)
Synchronous Ethernet
IEEE 1588v2
MSTP Features
Interface Electrical interfaces: DDN (V.35/V.24/X.21/RS-449/RS-530/RS-530A), E1/T1, E3/T3, E4, STM-1(E), 10/100BASE-TX, 1000BASE-T
Optical interfaces:
- Ethernet 100base-FX, 1000BASE-SX/LX/ZX, 10GBASE-LR/LW
- STM-1 S-1.1, L-1.1, L-1.2
- STM-4 S-4.1, L-4.1, L-4.2
- STM-16 I-16, S-16.1, L-16.1, L-16.2, V-16.2, U-16.2
- STM-64 I-64.2, S-64.2, L-64.2b, P1L1-2D2, V-64.2
- 40-channel DWDM interfaces (FEC off band), compliant with ITU-T G.694.1
- 8-channel CWDM interfaces, compliant with ITU-T G.694.2
Carrier-class protection Mesh Protection and restoration (ASON)
-Distributed restorable rerouting protection
-Five dedicated protection scheme levels based on different SLA: Diamond, Gold, Silver, Copper and Iron
SDH Network Protection
2/4 fiber MS-SP Ring, 1+1 or 1:n (n<=14) linear MSP, SNCP/SNCMP/SNCTP;, fiber shared virtual path protection, fiber shared MS-SP Ring (one optical interface can support 2 groups of MS-SP Rings), DNI (ITU-T G.842)
Service Protection
Electrical Interface Protection
1:n tributary protection for E1/T1, E3/T3, E4, STM-1(e), and FE
Multi-service Transport Features Ethernet Over SDH
- L2 switch, 64 aggregation directions for powerful Ethernet convergence
- Mapping granularity, VC-12-nv/VC-3-nv, and VC-4-nv
- Point-to-point LPT, point-to-multi-point LPT
- MPLS and stackable VLAN for L2 VPN
- 4/8-level CoS, CAR based on 64K granularity
- IEEE 802.3ah, 802.1ag
- Automatic topology discovery
- 3-level CoS, A (A0/A1) / B (B-CIR/B-EIR) / C
- Steering/Wrapping/Steering + Wrapping protection scheme guarantee 50ms switching
- Spatial reuse of bandwidth with fairness algorithm
- Integrated MPLS with RPR to provide VLL/VPLS service
- Support 2M, 34M, 155M, 622M ATM, and IMA E1
- Support up to 93 IMA group and 189 E1s
- Support DDN (Nx64K) and framed E1
Clock synchronization Two external clock inputs/outputs (2 MHz or 2 Mbit/s)
Two external time signals (1pps+TOD)
Line clock source
Tributary clock source
IEEE 1588v2

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