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■ V C M |
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| Voipack Call Master (VCM) is the core subsystem within the Voipack Soft Switch System |
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| (VSS) performing call
control function. VCM provides the device registration and |
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| authentication, call routing, call establishment, call features and call detailed record |
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| generation. VCM supports various VoIP protocols, adapts to diverse network |
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| environments, unifies multiple media formats, and co-works with most leading 3rd party |
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| VoIP terminals. VCM is a reliable, manageable, and expandable service platform for |
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| enterprises and service providers. VCM is built around MGCP, H323, and SIP standard |
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| protocols. Base on distributed architecture and clientserver framework, VCM is designed |
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| for expandability and fault-tolerant reliability. VCM consists of 5
modules: MGCP Call |
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| Agent (CA), H.323 Gatekeeper (GK), SIP Proxy Servers (PROXY), common Call
Processor |
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| (CP), and Network Management Server (NMS). CA is responsible for MGCP terminal |
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| registration, authentication, and device control. GK is responsible for |
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| H.323 terminal registration,
authentication, and call routing according to various call |
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| termination criteria. PROXY is responsible for SIP
terminal registration, authentication, |
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| and routes call through consultation of SIP Redirector. CP is
responsible for call |
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| establishment, provides enhanced features, such as call transfer, 3-way conference, |
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| and translates signaling between terminals based on different protocols. NMS provides |
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| GUI for
administrators, maintains operational database and sends alarm messages |
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| upon system fault events.
Through the communication of standard VoIP and Radius |
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| protocols, VCM is capable of inter-working with 3rd party products. |
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| ■Product Features |
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| [Protocol Translation] |
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| ·VCM provides a uniformed configuration interface for terminals of different protocols. |
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| VCM
transparently translates the protocols among them, and the caller is not aware |
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| about which protocol the callee uses. |
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[Compatibility] |
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| ·VCM is compatible with various 3rd party VoIP equipments such as digital trunking |
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| gateway from
Cisco, analog gateway from Nortel and Huawei， WIFI SIP Phone from |
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| DBTel, H323 video Phone from UTron and Datong. |
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| |
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| [Dynamic Socket] |
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| ·VCM will exchange information with CPEs to adopt new IP address or TCP/IP port |
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| upon network
blocking. |
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| [Flexible Routing Policy] |
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| ·VCM enables service providers to define multiple routing policies, so that VCM can |
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| switch to an
alternative route upon network problem or congestion. Both users' voice |
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| quality and services providers'
cost are satisfied. |
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| |
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| [System Cluster] |
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·A set of VCMs can be organized in a cluster. It balances the loading and improves |
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| reliability.
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[N+1 Backup] |
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| N+1 backup system will dispatch an available VCM to take over the role of a failing VCM |
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| upon hardware or network failures. |
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| |
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| [Event Notification] |
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| The MIS staff will be notified by short messages upon critical events to prevent network |
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| or environmental problems. |
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| [Call Features] |
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| ·Call forward, always
·Call Transfer
·Hot line, extension/PSTN
·Hot line |
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| ·Call forward, no answer
·3-way conference ·Work Group
·Call Restriction |
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| ·Call forward, busy
·Caller ID display·Call pick up
·ACD |
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·Call back, busy
·Speed dialing
·Do not disturb
·FXO authentication,
password setup |
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·Call waiting ·One number ·Distinct ringing
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| ■Protocol Support |
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·MGCP 1.0 ·SIP 2.0 ·H.323 v3 ·RADIUS |
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| ■System Performance |
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·20,000 registered users, per VCM ·Call failure rate ≤ 1.5% |
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| ·4,000 on-line, per VCM
·Standby backup
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| ·400 simultaneous call attempts, per VCM ·Configuration response time ≤ 1s |
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·Peak signaling response time≤ 200ms
·Average signaling response time≤ 50ms
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| ■System Hardware Platform |
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Voipack offers one hardware model, VSM9000, for running VSS, which can also run on |
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| other 3rd party PC servers: |
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Hardware model |
Specifications |
VSM9000 |
1.2GHz , 512MB RAM , 80G-HD |
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