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OptiX PTN 7900 Transmission Systems

Huge-capacity Packet Transport Network (PTN) transmission engine with Software-Defined Networking (SDN) architecture for simplified O&M and smooth migration to fully virtualized networking, LTE, and a variety of value-added services.

Working at the PTN core layer, Huawei’s OptiX PTN 7900 supports 40 GE/100 GE interfaces — or replace with a 400 GE board — with forwarding capacity up to 3.84 Tbit/s.

Energy-efficient electronics, dynamic power management based on the system’s configuration and operations, and intelligent heat dissipation features conserve power and reduce CO2 emissions by up to 40 tons annually over traditional PTNs.

PTN7900 packet transport network


Standard application interfaces allow for user-defined programming for rapid provisioning of new services

SDN architecture separates control and forwarding planes for decoupling of management services and simplified O&M

Huge processing and forwarding capabilities support resilient scheduling and performance at the core layer

Carrier-grade reliability performance optimizes uptime availability and protects core network assets

SDN design simplifies provisioning, management, and expansion


Item PTN7900-32 PTN7900-24
Subrack dimensions (H x W x D) 1822 mm x 496 mm x 295 mm (71.73 in. x 19.53 in. x 11.61 in.) 1340 mm x 496 mm x 289 mm (52.76 in. x 19.53 in. x 11.61 in.)
Fully loaded subrack weight

Without boards or air filters: 68 kg (149.9lb)

With full configuration(include cabinet 60kg): 317 kg (698.9lb)

Without boards or air filters: 45 kg (99.2lb)

With full configuration(include cabinet 60kg): 242 kg (533.5 lb)

Working voltage –48 V power supply: –40 V to –57.6 V –48 V power supply: –40V to –57.6 V
Standard power consumption 3041 W 2670W
Switching capacity 3.84 Tbit/s 2.88Tbit/s
Number of 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

24 processing board slots,2 switching board slots,2 main control boards,4 PIU boards ,4 PSU boards,4 fan module slots

Environment requirements Working temperature: –5ºC (23ºF) to 45ºC (113ºF); storage temperature: –40ºC (–40ºF) to 70ºC (158ºF); relative humidity: 5% RH to 95% RH; altitude ≤ 4000 m
Interface types cSTM-1, cSTM-4, FE, GE, 10GE, 40GE, 100GE, and so on
Interface capacity of the equipment

100GE port: 32

40GE port: 64

10GE port: 384

GE optical port: 768

FE optical port: 768

cSTM-1 optical port: 512

cSTM-4 optical port: 128

100GE port: 24

40GE port: 48

10GE port: 288

GE optical port: 576

FE optical port: 576

cSTM-1 optical port: 384

cSTM-4 optical port: 96

Service types E-Line, E-LAN, L3VPN, CES
Service protection LMSP, LAG, LSP APS, PW APS, ring protection, IP/VPN FRR, and VRRP
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, 802.1ag, 802.3ah, link-state pass through (LPT), and pseudo random binary sequence (PRBS)
Security 802.1x and user authentication