The Huawei eSpace U1981 Unified Gateway is a core voice gateway used in the Huawei Unified Communications (UC) Solution.Consult
The Huawei eSpace U1981 Unified Gateway is a core voice gateway used in the Huawei Unified Communications (UC) Solution. It works with Huawei IP terminals and UC applications to provide IP telephony (IPT) and UC services. The lightweight U1981 uses a highly-integrated broadband/narrowband design to accommodate 20,000 users per subrack. The U1981 allows for hybrid analog and IP phone networking. It can connect to the Public Switched Telephone Network (PSTN) or to voice switches in private networks using digital, analog, and broadband Simple Internet Protocol (SIP) trunks. The gateway is equipped with modular function boards to simplify installation and support hot swapping. It can be quickly deployed and easily maintained with graphical configuration toosls.
Huawei’s U1981 is a large-capacity voice gateway with carrier-grade reliability for large-sized voice communication scenarios. It provides a wide range of voice services and supports two-node cluster deployment and geographical redundancy.
IPT application scenarios
U1981 core voice gateways provide call control services network-wide. The branches can use different model eSpace U1900 series gateways as local voice gateways. These local voice gateways support local regeneration to ensure service continuity.
Using narrow and broadband trunks, local voice gateways can connect to external networks, such as PSTN, to implement communication between internal and external (mobile and fixed-line) users. In those cases, SIP phones can connect directly. Analog phones and fax machines can connect through Integrated Access Devices (IADs).
UC application scenarios
Based on IPT application scenarios, UC application servers deploy at the same time to enrich communication channels and improve communication efficiency with a wide range of UC services. Services include presence, Instant Messaging (IM), and multimedia conferencing. In this case, the U1981 works as a core voice gateway.
|User Capacity per U1981||Maximum of 20,000 users, including 160 direct-connected analog phone users|
|Terminals Supported||Analog, IP, and video phone and soft terminal|
|Trunk Ports||Maximum of 60 FXO ports, 24 E1/T1 ports, and 20 BRI ports|
|Signaling Protocols||PRI, QSIG, SS7, R2, SIP, and BRI|
|Codecs||G.711a/μ, G.729a/b/ab, iLBC, and G.722, G.722.1, G.722.2|
|Conference Capacity||Maximum of 2,000 participants|
|Maximum of 660 conferences with a maximum of 360 participants per conference|
|Built-in Voicemail Box||30 channels concurrently|
|Built-in 16G SD storage card|
|Power Supplies||AC: 100V to 240V AC, 50/60 Hz|
|DC: -38.4V to -60V DC, typical value: -48V DC|
|Two power modules in 1+1 backup mode|
|Power Consumption||220W fully configured|
|Dimensions (H x W x D)||Standard 19-inch 2U subrack|
|3.3 in. x 17.4 x 12.2 in. (86.1 mm x 442 mm x 310 mm)|
|Weight||22 lb. (10 kg) fully configured|
|Environment||Storage temperature: -40oF to 158oF (-40oC to 70oC)|
|Long-term operating temperature: 32oF to 113oF (0oC to 45oC)|
|Short-term operating temperature: 23oF to 131oF (-5oC to 55oC)|
|Operating humidity: 5% to 95% relative humidity, no condensing|
|Deploy air-filtration systems in the operating environment. Airborne dust should be less than 180 mg/m³|
|System Reliability||≥ 99.999%|
|Mean-Time-Between-Failure (MTBF): 30 years|
|Manageability||Centralized/remote device management, log management, resource management, and alarm management|