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CloudUSM Unified Session Manager

Huawei CloudUSM is the core switching device of the Huawei Cloud Enterprise Communications solution, functioning as a unified call control and media processing platform for voice, video, mobile applications, and multimedia conferencing services.

CloudUSM is developed based on a professional system architecture and a highly reliable software platform. It uses a pure software design that has high integration and flexible networking capabilities, meeting communications requirements of enterprises across different industries and scales.


Specifications CloudUSM
User Capacity 400,000
Concurrent Calls 80,000
SIP Trunk Pairs 2,000/20,000 (Aggregation gateway)
Voice Conference
A maximum of 5,000 participants
A maximum of 4,000 conferences, with a maximum of 100 participants per conference (on-premises IP telephony
and UC scenarios)
Recording Capacity A maximum of 4,000 uses
Audio and Video
G.711a /μ, G.729ab, iLBC, and AMR-WB
Audio Features Voice Activity Detection (VAD)
Adaptive Jitter Buffer (AJB)
Packet Loss Compensation (PLC)
Comfort Noise Generation (CNG)

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