Cisco TelePresence Video Communication Server Instrukcja Użytkownika Pobierz pdf (Strona 2)

Benefits of Cisco VCS Expressway

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Advanced firewall traversal: The Cisco VCS Expressway traverses any number of firewalls, making it easy

for enterprises to collaborate more closely with external partners and suppliers.

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Optimal media routing: The Cisco VCS Expressway offers Simple Traversal of User Datagram Protocol

Through Network Address Translation (STUN)-compliant firewall traversal, which provides endpoints with

an intelligent framework to determine the best path for media connectivity.

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Increased competitiveness: The Cisco VCS Expressway helps enterprises become more competitive

through real-time video communications across geographically dispersed teams.

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Improved productivity: The Cisco VCS Expressway empowers remote and home-based workers to

collaborate more effectively with colleagues while helping cut travel costs.

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Robust security: The Cisco VCS Expressway uses standards-based device authentication for easier control

over the network and safeguards external video communications.

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Flexibility: Administrators can implement the Cisco VCS Expressway either as an appliance or as a

virtualized application to meet the needs of their organizations.

Features of the Cisco VCS Expressway

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Firewall traversal services: The Cisco VCS Expressway offers all the functions of Cisco VCS Control.

However, its main feature is that it acts as a firewall traversal server for other Cisco networks and any

traversal-enabled endpoints that are registered directly to Cisco VCS Expressway. The Cisco VCS

Expressway uses SIP or H.460.18/19 for firewall traversal of signaling and media across a range of ports.

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Cisco Expressway also enables mobile worker access to collaboration services using Cisco Jabber clients

registered to Cisco Unified Communications Manager.

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Registration of traversal-enabled endpoints: The Cisco VCS Expressway can register traversal-enabled

endpoints directly for firewall traversal. You can configure the endpoints with a range of firewall traversal

preferences such as protocols, ports, registration attempts, and keepalive intervals.

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Traversal Using Relays for NAT (TURN) relay services:

The Cisco VCS Expressway provides TURN relay services to Interactive Connectivity Establishment

(ICE)-enabled endpoints to allocate relays for the media components of the call. The endpoints perform

connectivity checks through ICE to determine how they will communicate.

For communications between the VCS and external Microsoft Lync servers and clients that are

registered through a Microsoft Edge Server, a Back-to-Back User Agent for Microsoft Lync is provided

with Cisco VCS Expressway.

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Call-routing services: The Cisco VCS Expressway supports a wide range of call-routing services, including

alphanumeric Uniform Resource Identifier (URI) dialing. Additionally, the Cisco VCS Expressway can take

advantage of the Domain Name System (DNS) Service Record (SRV) configuration to advertise availability

to parties outside the local network, creating a rich peer-to-peer capability.

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Policy engine for processing calls: The Cisco VCS Expressway allows administrators to set systemwide

policies that determine how incoming or outgoing calls should be allowed, rejected, or redirected to a

different destination based on criteria such as time of day, source or destination address, or more complex

algorithms.

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