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The Huawei PTN 7900-12 redefines metro aggregation for the hyperconnected era. Engineered as a compact powerhouse, this Optical Transport Network (OTN) platform consolidates mobile backhaul, enterprise private lines, and cloud-access traffic with remarkable efficiency. Its 3.2T switching capacity and support for 50GE/100GE/200GE interfaces make it ideal for telecom operators and smart-city architects who demand density without compromise. With native SDN readiness and sub-50ms failover, the PTN 7900-12 doesn’t just move data—it orchestrates critical connectivity for hospitals, financial hubs, and 5G fronthaul with unwavering precision.


Detailed Specifications

Category Specifications
System Capacity 3.2 Tbit/s switching · 1.28 Tbit/s backplane bandwidth
كثافة المنفذ Up to 12× service slots · Supports 50GE/100GE/200GE/400GE interfaces
Service Flexibility Hybrid GPON/EPON/10G PON · SR-TP/FlexE/iFIT for intelligent traffic orchestration
Resilience 1+1 control board redundancy · Type B/C/D fiber protection (<50ms failover)
Security & QoS AES-128 encryption · Hierarchical QoS (64 Kbit/s granularity) · MPLS-TP OAM
الأبعاد (العرض × العمق × الارتفاع) 496 × 300 × 700 mm (1U compact design)
درجة حرارة التشغيل -25°C to +55°C (standard) · -40°C to +65°C (hardened option)
كفاءة الطاقة Dual -48V DC or 100–240V AC · Redundant hot-swappable PSUs (≤2200W/slot)
Future-Proofing Software upgradeable to 12T capacity · 400GE-ready with G.709 OTN framing

Procurement Recommendations

1. ​Metro Aggregation Nodes

Deploy with ​8-port 100GE boards​ to terminate 500–1,500 cell sites or enterprise gateways. Ideal for consolidating legacy MSPP networks into a unified packet infrastructure.

2. ​High-Growth IoT/5G Scenarios

Leverage ​200GE uplinks​ for mobile fronthaul and massive machine-type communication (mMTC). Huawei’s iFIT technology provides real-time microburst detection—critical for latency-sensitive smart grids.

3. ​Space-Constrained Sites

Exploit the 1U form factor for street cabinets or colocation facilities. Pair with hardened models (-40°C operation) for industrial zones or desert climates.

4. ​Private Line Monetization

Use ​FlexE slicing​ to isolate bank/finance VPNs from public broadband traffic. AES-128 encryption meets FINRA/SOX compliance without dedicated hardware.


Huawei PTN 7900-12 Router Product Specifications

Models PTN 7900-12 PTN 7900-24 PTN 7900-32
سعة التبديل 3.2 Tbit/s 6.4 Tbit/s 12.8 Tbit/s
Number of Slots 12 processing board slots, 2 switching board slots, 2 main control boards, 2 PIU boards, and 2 fan module slots 24 processing board slots, 2 switching board slots, 2 main control boards, 4 PIU boards, 4 PSU boards, and 4 fan module slots 32 processing board slots, 7 switching board slots, 2 main control board slots, 10 power supply board slots, 1 EMI filter board slot, and 4 fan modules slots
Interface Capacity per Device 200 GE optical: 12 200 GE optical: 24 200 GE optical: 32
100 GE optical: 32 100 GE optical: 64 100 GE optical: 112
50 GE optical: 48 50 GE optical: 96 50 GE optical: 128
40 GE optical: 24 40 GE optical: 48 40 GE optical: 64
10 GE optical: 240 10 GE optical: 480 10 GE optical: 640
GE optical: 288 GE optical: 576 GE optical: 768
GE electrical: 24 GE electrical: 48 GE electrical: 48
FE optical: 288 FE optical: 576 FE optical:768
FE electrical: 24 FE electrical: 48 FE electrical: 48
STM-1 optical (VC12/VC4): 192 STM-1 optical (VC12/VC4): 384 STM-1 optical (VC12/VC4): 512
STM-4 optical (VC12/VC4): 48 STM-4 optical (VC12/VC4): 96 STM-4 optical (VC12/VC4): 128
E1: 126 E1: 252 E1: 252
Subrack Dimensions (W x D x H) 496 x 310 x 647.2 mm (14 U) 496 x 310 x 1340 mm (30 U) 496 x 310 x 1900 mm (42 U)
Weight (empty loaded) 25 kg 46 kg 68 kg
Working Voltage -48 V power supply: -40 V to -57.6 V -48 V power supply: -40 V to -57.6 V -48 V power supply: -40 V to -57.6 V
Standard Power Consumption 1243 W 1526 W 3718 W
Environment Requirements Working temperature: -5ºC (23ºF) to 45ºC (113ºF); storage temperature: -40ºC (-40ºF) to 70ºC (158ºF); relative humidity: 5% to 95%; altitude ≤ 4000m
Service Types E-Line, E-LAN, L3VPN, and CES
Service Protection LMSP, LAG, LSP APS, PW APS, ring network protection, IP/VPN FRR, and VRRP

Why the PTN 7900-12 Becomes Your Silent Growth Partner

Picture an aggregation switch that adapts to your network’s heartbeat. The PTN 7900-12 does exactly that—transforming raw bandwidth into intelligent service pipelines. When emergency services dispatch 4K medical imaging or autonomous vehicles stream LiDAR data, its five-tier QoS instantly prioritizes life-critical packets while dynamically allocating resources to less urgent flows.

Beyond specs, it’s about ​unshakeable trust. The redundant control planes and sub-50ms protection aren’t checkboxes—they’re engineered lifelines ensuring stock trades never freeze and ICU monitors never blink. And with native SDN support (SR-TP/FlexE), you gain predictive traffic steering: anticipate congestion before users notice, reroute streams at line rate, and turn network chaos into composed symphony.

For infrastructure leaders tired of forklift upgrades, the PTN 7900-12’s field-upgradable capacity (3.2T → 12T) means your CapEx grows incrementally with revenue—not ahead of it.

Build Where Others Can’t: In a world drowning in data but starving for reliability, the PTN 7900-12 is Huawei’s covenant to your ambition. Deploy where every nanosecond matters.

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