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Giải pháp > OpenScape Voice V9
OpenScape Voice is a native SIP-based real time Voice over IP system scalable up to 100,000 users per system and a virtually unlimited number of users when OpenScape Voice systems are networked. It runs on highly reliable, redundant and fault-tolerant hardware. It provides a complete and feature rich set of business class features and can be deployed on-premise, in a data center (as a private cloud), or as a multitenant hosted/public cloud solution.
OpenScape Voice is a carrier-grade enterprise voice solution meaning 99.999% reliability – that translates to less than 5½ minutes of downtime per year! The server nodes are designed so that if one fails, the other server node is capable of supporting 100% of the call load. The server nodes can operate with 100% call failover support even when they are geographically separated, greatly reducing the costs, and the amount of time implementing a disaster recovery strategy. And remote offices can be protected with an OpenScape Branch solution – a survivable branch office solution for OpenScape Voice. OpenScape Branch not only offers survivability, but it includes a media server, firewall, Session Border Controller, and integrated PSTN gateway, all in a single appliance form factor. The value of OpenScape Branch goes beyond survivability, its activity contributes to lower the overall deployment, bandwidth and service costs.
OpenScape Voice can be deployed in a virtualized architecture, and can be delivered as a virtual appliance (vApp).

Comprehensive Unified Communications
OpenScape Voice is always part of a solution landscape. The most basic solution includes:
• OpenScape Voice as a SIP-based Voice over IP software application
• OpenScape Media Server for tones and announcements
• OpenScape Branch 500i for a survivable trunk gateway
• OpenScape Branch (50, 250, 500i, 1000, 6000) for survivable remote offices
• OpenScape Session Border Controller
• OpenStage SIP phones for IP end-points for user access
• OpenScape Personal Edition for a soft client
• OpenScape Common Management Platform (CMP) with OpenScape User Management
• OpenScape Deployment Service
For advanced scenarios, Unified Communication applications are added.

Deployment scenarios
OpenScape Voice is designed to cover multiple customers and target market deployment scenarios. The key deployment scenarios are:

OpenScape Exchange
OpenScape Exchange is an overlay solution for multi-vendor networks, where there is TDM legacy, or converged IP systems. It allows for centralized deployment of Unified Communications services. In the overlay deployment, OpenScape Voice acts as a SIP-based central routing and administration solution for multi-site, multi-vendor networks, allowing customers a "migrate at your own pace" solution.

Public cloud / Hosted edition
OpenScape Voice is the cornerstone application for public cloud/hosted edition solutions. It supports multi-tenancy (up to 6,000 business groups) allowing service providers to "build their own cloud".

Private cloud
For large enterprise customers (1,000 to 100,000 users) with multi-site locations that span over a region or the globe, OpenScape Voice can deploy as a private cloud solution. The key characteristic of a private cloud is centralized deployment of voice (and UC) service from the customer's data center.

Configurations OpenScape Voice Simplex
• This configuration consists of a system that provides the minimal voice solution (with no UC or other enhanced service applications). The OpenScape Voice application is deployed as a single node platform; as such there is no carrier-grade reliability due to the lack of redundancy. Additionally, the following deployment highlights provide the ability to run on the same physical platform:
• OpenScape Voice application
• OpenScape Voice Assistant
• OpenScape Media Server
• Common Management Platform (CMP)
• OpenScape Deployment Service
This model represents an offering that would be of interest to a customer that wants a small simple VoIP PBX solution (up to 5,000 subscribers) at a low cost, and therefore is willing to accept some risk of downtime (due to no redundancy). This is also a configuration that is prevalent in the "try-and-buy" program.

OpenScape Voice Duplex
This deployment model illustrates how the OpenScape Voice can be operated as a more robust and scalable duplex system. It provides carrier-grade reliability by running two platforms in a redundant two node cluster that executes in an active mode. Should one of the nodes fail, then the remaining partner node would assume the call load of the failed partner (and would handle 100% of the call traffic) and would continue to provide uninterrupted call processing. No calls would be dropped due to the failover from duplex to simplex operation, or when the system reestablishes duplex operation. The duplex mode also allows for the possibility of maintaining call processing operation while an OpenScape Voice upgrade is performed (Rolling upgrade or Live upgrade).
Currently a mix of physical nodes and virtual nodes is not supported. A cluster of 2 physical nodes or a cluster of 2 virtual nodes are the only scenarios supported.
This model is appropriate for larger customers (up to 100,000 lines) as well as customers that want carrier-grade reliability.
• Multiple instances of the OpenScape Deployment Service may be de-ployed to scale with the number of subscribers. Running the OpenScape Deployment Service upon the same platform as the CMP is only recommended in very small deployments.
• A multi-node configuration for OpenScape Deployment Service is also supported. This allows an installation of two to four OpenScape Deployment Service servers to ap-pear as a single computer to clients.
• The OpenScape Media Server scales (up to as many as 3,000) to meet the increased media service needs of large/increasing numbers of subscribers. One instance of the OpenScape Media Server may reside upon the CMP platform; multiple instances are also possible for redundancy, scalability and optimized bandwidth utilization reasons.
• A single Common Management Platform is used to support the entire solution.

OpenScape Voice virtualized architecture
The most important features provided by virtualization are the reduced number of servers and the capability of our solution to be hardware agnostic.
Therefore, OpenScape UC Suite opera-tion in a virtual environment enables the following capabilities:

Server consolidation
The applications and virtual machines deployed onto a VMware host can use different guest operating systems, i. e. OpenScape Voice (Linux) and OpenScape Concierge (Windows) can both be deployed onto the same VMware host and share its physical resources.

Hardware independence
Having many hardware server vendors and models in a data center environment adds complexity and cost to the operation, therefore customers often look to standardize their IT hardware infrastructure. Virtualization allows customers to deploy applications onto any hardware platform, assuming it has been certified by VMware and it meets the resource requirements of the application, as described in this document.
 
Application and server platform
At the heart of the OpenScape Unified Communications is the OpenScape Voice real-time, SIP-based, Voice over IP application that provides the carrier grade level of redundancy, reliability and scalability required for mission critical deployments. OpenScape Voice operates on commercial servers over QoS managed networks.
The OpenScape Voice VoIP system provides the following key features:
• SIP proxy (supplied by external equipment)
• Enterprise telephony features
• User management and address translation functions
• Interface to monitor and control media transactions including pure telephony
• Interface for advanced services, such as presence services, billing services, collaboration services, etc.
• Gateway selection and hunting
• Routing and translation functions comparable to a carrier-grade solution
OpenScape Voice is designed as an open standards platform that runs on standard rack-mountable commuting hardware.
The base system software runs on the SUSE Linux Enterprise Server operating system - SLES11 64 bit. This is combined with cluster control software to run all parts of the system as a redundant unit. The system runs on a single server or a dual server cluster, depending on the number of users and customer requirements.



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