Cisco Cisco TelePresence Video Communication Server Expressway Maintenance Manual
VCS Base Applications
The VCS is available with alternative base applications as described below.
VCS Control
VCS Control delivers any-to-any enterprise wide conference and session management and interworking capabilities.
It extends the reach of telepresence conferences by enabling interworking between Session Initiation Protocol (SIP)-
and H.323-compliant endpoints, interworking with third-party endpoints; it integrates with Unified CM and supports
third-party IP private branch exchange (IP PBX) solutions. VCS Control implements the tools required for creative
session management, including definition of aspects such as routing, dial plans, and bandwidth usage, while
allowing organizations to define call-management applications, customized to their requirements.
It extends the reach of telepresence conferences by enabling interworking between Session Initiation Protocol (SIP)-
and H.323-compliant endpoints, interworking with third-party endpoints; it integrates with Unified CM and supports
third-party IP private branch exchange (IP PBX) solutions. VCS Control implements the tools required for creative
session management, including definition of aspects such as routing, dial plans, and bandwidth usage, while
allowing organizations to define call-management applications, customized to their requirements.
VCS Expressway
The VCS Expressway deployed with the VCS Control enables smooth video communications easily and securely
outside the enterprise. It enables business-to-business video collaboration, improves the productivity of remote and
home-based workers, and enables service providers to provide video communications to customers. The application
performs securely through standards-based and secure firewall traversal for all SIP and H.323 devices. As a result,
organizations benefit from increased employee productivity and enhanced communication with partners and
customers.
outside the enterprise. It enables business-to-business video collaboration, improves the productivity of remote and
home-based workers, and enables service providers to provide video communications to customers. The application
performs securely through standards-based and secure firewall traversal for all SIP and H.323 devices. As a result,
organizations benefit from increased employee productivity and enhanced communication with partners and
customers.
It uses an intelligent framework that allows endpoints behind firewalls to discover paths through which they can pass
media, verify peer-to-peer connectivity through each of these paths, and then select the optimum media connection
path, eliminating the need to reconfigure enterprise firewalls.
media, verify peer-to-peer connectivity through each of these paths, and then select the optimum media connection
path, eliminating the need to reconfigure enterprise firewalls.
The VCS Expressway is built for high reliability and scalability, supporting multivendor firewalls, and it can traverse
any number of firewalls regardless of SIP or H.323 protocol.
any number of firewalls regardless of SIP or H.323 protocol.
Standard Features
The primary purpose of the VCS is to provides secure firewall traversal and session-based access to Cisco Unified
Communications Manager for remote workers, without the need for a separate VPN client.
Communications Manager for remote workers, without the need for a separate VPN client.
The VCS has the following standard features:
■
Provides secure firewall traversal and session-based access to Cisco Unified Communications Manager for
remote workers, without the need for a separate VPN client
remote workers, without the need for a separate VPN client
■
system and 5000 registrations on a Large system
■
SIP Proxy/Registrar
■
SIP Presence Server
■
SIP Presence User Agent
■
SIP and H.323 support, including SIP / H.323 interworking
■
IPv4 and IPv6 support, including IPv4 / IPv6 interworking
■
H.323 gatekeeper
■
QoS tagging
■
Bandwidth management on both a per-call and a total usage basis, configurable separately for calls within
the local subzones and to external systems and zones
the local subzones and to external systems and zones
■
Automatic downspeeding option for calls that exceed the available bandwidth
■
URI and ENUM dialing via DNS, enabling global connectivity
■
Up to 500 non-traversal calls
■
■
1000 external zones with up to 2000 matches
10
Cisco TelePresence Video Communication Server Administrator Guide
Introduction