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    Huawei UCN

    Carrier-class Simplified Voice Network Enables Enterprise Voice Evolution


  • Overview
  • Features
  • Specifications


In the era of digital transformation, to help enterprises develop and improve information-based communications, Huawei innovatively launches the new-generation Unified Communication Node (UCN) solution. Based on completely independent and controllable software and hardware technologies, Huawei provides small-sized and highly reliable voice core network solutions for customers. The UCN provides access capabilities of soft and hard terminals, PBXs, and IADs for enterprise fixed voice services. It also provides VoLTE/VoNR voice and video call capabilities for 4G/5G mobile voice services, meeting customers' increasing communication requirements in the 5G interconnection era.
Automatic Service Provisioning

Highly integrated and miniaturized IMS

• High-performance hardware platform: implements switching-free networking and simplifies the network
• Switching-free and disk array-free: The UCN does not require dedicated management nodes. Centralized deployment of the forwarding plane to maximize port efficiency

Continuous Security

Carrier-class reliability

• Network overload protection: When the network is overloaded three times, the traffic is not lost and the service unit is not affected
• Hot backup of dual-system user data: No call drop occurs in dual-site switchover and upgrade scenarios

Security Virtualization

Efficient security protection

• IDS, CAC, network isolation
• Service encryption
• blocklist and trustlist

Flexible Installation

Easy deployment and installation

• Out-of-the-box use, reducing deployment parameters by 80% compared with the carrier's large-network IMS network


Specifications UCN
Performance Index
System user capacity 20000
The system supports concurrency 2000
Service function User registration, basic audio and video, three-party call, fax, blocklist and trustlist, and supplementary services (Call Forwarding, Call Waiting, Incoming Call Explicit, etc.) 3. Interconnection with a third-party traffic system
Codec Type G.711、G.729、G.723、G.722、AMR、AMR-WB、EVS、DTMF/2833、MPEG4、H.264、H.265
Supported Protocol Interfaces SIP 、RTP/RTCP、Diameter、UDP/TCP、BFCP、BFD、Sh/Cx/Rx
Reliability Specifications
Dual-site system availability ≥99.99916% (MTTR ≤ 4)
Inter-Site Switchover Time The maximum switchover time is 40s when a software fault occurs and 29s when a hardware fault occurs.
Full configuration system restart time 12 minutes
Impact of DR on services Online calls are not interrupted, and new services are affected for up to 40 seconds.
Dimensions, power consumption, power supply, and environmental specifications
Dimensions (H x W x D) 88.1mm*447mm*486mm
weight Empty weight: 10.6 kg (including fans, PSUs, and management modules),Net weight of a fully configured subrack ≤27.8kg
Power consumption of the entire system
392.8W/ 623.15W/ 674.91W
Operating ambient temperature Long-term operating temperature: 0℃~45℃
Short-term operating temperature: -5℃~55℃
Power supply DC: -48V~ 60V. Two hot-swappable 2000 W DC PSUs in 1+1 redundancy mode
AC: 220V~240V. Two hot-swappable 2000 W AC PSUs in 1+1 redundancy mode
heat dissipation Air-cooled (forward and back-out)