IP PBX
U1980 can function as an IP PBX. As shown in the following figure, a U1980 is deployed at the headquarters of an enterprise to provide call control services for users over the enterprise's network. The branches, according to their user capacities, can use different models of Huawei eSpace U1900 series unified gateways as local voice gateways. These local voice gateways support local regeneration. U1980 at the headquarters and the local voice gateways at the branches can connect to the PSTN using narrowband and broadband trunks. They can also connect to multiple types of terminals, including SIP phones, integrated access devices (IADs), analog phones, and fax machines, to provide a rich array of voice services for users.
U1980 supports two deployment modes to ensure a highly reliable IPT solution: local two-node clustering and remote disaster recovery.
UC core voice gateway
U1980 can serve as a UC core voice gateway. As shown in the following figure, a U1980 and UC application servers are deployed at the headquarters of an enterprise to provide basic telephony services and UC services, helping improve enterprise users' communication efficiency. The services supported include voice calling and voice conferencing among different types of terminals (SIP phones, analog phones, and soft terminals), presence, instant messaging (IM), and multimedia conferencing. The branches, according to their user capacities, can use different models of Huawei eSpace U1900 series unified gateways as local voice gateways. These local voice gateways support local regeneration.
