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OptiX PTN 3900 Transmission Systems

Primarily used at the core layer of a metropolitan transmission network; can also be used to provide Packet Transport Network (PTN) aggregation services.

Huawei’s OptiX PTN 3900 handles CES, ATM, Ethernet, IP over PW, and L3 VPN services. Supporting 40 GE interfaces, the system has a distributed architecture with separate control and forwarding planes. 1+1 redundancy protects the main control boards, cross-connect boards, and power supply modules.

With capacity up to 640 Gbit/s, the PTN 3900 offers a highly reliable, high-capacity platform for core or aggregation use.

PTN3900 Packet transmission


  • Support for Circuit Emulation over Packet (CEP) interfaces, aggregates VIP VC4 private line services
  • Network-level protections include dual homing, Virtual Private Network (VPN) Fast Reroute (FRR), and Label Switched Path (LSP) Automatic Protection Switching (APS) to ensure reliable forwarding services
  • A&M mechanisms include Y.1731 and Multi-protocol Label Switching Transport Profile (MPLS-TP) for rapid fault detection and device performance monitoring
  • Comprehensive QoS features to prioritze critical services
  • 40 GE interface supports hard and soft pipes for high performance with low latency
  • SDN-based design simplifies capacity expansion and evolution


Item PTN 3900-8 PTN 3900
Subrack dimensions (H x W x D) 525 mm x 442 mm x 294 mm (20.67 in. x 17.4 in. x 11.57 in.) 800 mm x 496 mm x 295 mm (31.50 in. x 19.53 in. x 11.61 in.)
Fully loaded subrack weight 41.5 kg (91.51 lb) 60 kg (132.3 lb)
Working voltage –38.4 V to –72.0 V –38.4 V to –72.0 V
Standard power consumption 635W 900W
Switching capacity 320Gbit/s 640 Gbit/s
Number of slots

16 slots:

8 slots for processing boards

8 slots for interface boards

32 slots:

16 slots for processing boards

16 slots for interface boards

Environment requirements Long-term working temperature: 0ºC (32ºF) to 50ºC (122ºF); short-term working temperature: –5ºC (23ºF) to 55ºC (131ºF); storage temperature: –40ºC (–40ºF) to 70ºC (158ºF); relative humidity: 5% RH to 95% RH; altitude ≤ 4000 m
Interface capacity of the equipment

E1: 256

ATM STM-1: 72

Channelized STM-1 (T1): 16

Channelized STM-1:72

STM-1/STM-4 POS: 16

FE electrical port: 96

FE optical port: 64

GE electrical port: 64

GE optical port: 112



E1: 512

ATM STM-1: 128

Channelized STM-1 (T1): 32

Channelized STM-1: 128

STM-1/STM-4 POS: 32

FE electrical port: 192

FE optical port: 128

GE electrical port: 128

GE optical port: 224

10GE: 64

40GE: 16

Service types E-Line, E-LAN, L3VPN, CES, and ATM
Service protection LMSP, LAG, LSP APS, MC-PW APS, ring protection, VRRP, MC-LAG, IP FRR, and VPN FRR
Clock synchronization External clock, IEEE 1588v2, synchronous Ethernet, and TDM clock synchronization
HQos Five-level QoS scheduling and traffic shaping
MPLS RSVP-TE, LDP, and static LSPs
OAM Y.1731, MPLS-TP, birdirectional forwarding detection (BFD), 802.1ag, 802.3ah, link-state pass through (LPT), and pseudo random binary sequence (PRBS)
Alarms and performance monitoring Supported
Security 802.1x and user authentication