Huawei UC Voice PABX Product Brochure
eSpace U2990
Huawei IP PBX
Product Details

Product Overview
eSpace U2990 is built on the mTCA architecture and serves as the core switching device for the UC solution. A single chassis supports up to 30,000 users, with a maximum of 7 cascaded chassis supporting up to 300,000 user connections.
A single frame supports 128 E1/T1 trunks and integrates E1/ISUP, E1/TUP, E1/PRI, and T1/PRI with SIP, enabling unified narrowband/wideband access for both traditional PBX and PSTN interconnection. Dual-group clustering provides cross-site disaster recovery.
Key Features
- Based on the mTCA architecture, a single system 7 can cascade up to 300,000 user connections.
- Integrated narrowband and broadband access supporting E1/T1 and SIP trunks, compatible with legacy PBX and PSTN interconnection.
- 28 card slots; audio playback, DTMF reception, recording, fax, and conferencing resources are configured according to business needs.
- Supports single-site and dual-site Active-Active networking; branch sites can use U1900 series gateways or EGW for local breakout.
Technical Specifications (14Item
- User Capacity
- A single box supports 30,000 users; cascading up to 7 boxes enables connectivity for 300,000 users.
- Trunk Interface
- Single frame supports 128E1/T1
- Signaling Protocol
- E1/ISUP, E1/TUP, E1/PRI, T1/PRI (ITU-T standard), SIP
- Codec
- G.711, G.729, G.722, G.722.1, G.722.2, G.723, iLBC, AMR/EVRC
- Number of Conference Channels
- Maximum 480 participants per meeting room
- BHCC
- 180K (single frame) / 1800K (7-frame cascaded)
- Power
- DC -57V to -40V, typical -48V; supports redundant configuration (2 pairs of power supply modules, with each pair powering half the frame)
- Power Consumption
- 1250W (Full configuration for chassis module)
- Size
- 7U Chassis: Height 312mm × Width 442mm × Depth 409mm
- Weight
- 35kg (fully configured)
- Work Environment Metrics
- Temperature: 5°C~45°C; Humidity: 5%~85% RH (non-condensing); Pressure: 70~106 kPa; Seismic Resistance: 7~9 on the Richter Scale
- System Reliability Metrics
- 99.999%
- Maintainability
- Supports remote maintenance, hot patching, and log collection
- Manageability
- Supports centralized/remote device management, signaling tracing, resource monitoring, and alarm management