Standard Features - Cisco TelePresence Administrator's Manual

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.
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.

Standard features

The VCS has the following standard features:
2500 endpoint registrations
n
H.323 gatekeeper
n
SIP Proxy/Registrar
n
SIP Presence Server
n
SIP Presence User Agent
n
SIP and H.323 support, including SIP/H.323 interworking
n
IPv4 and IPv6 support, including IPv4/IPv6 interworking
n
QoS tagging
n
Bandwidth management on both a per-call and a total usage basis, configurable separately for calls within
n
the local subzones and to external systems and zones
Automatic downspeeding option for calls that exceed the available bandwidth
n
URI and ENUM dialing via DNS, enabling global connectivity
n
Up to 500 non-traversal calls
n
Up to 100 traversal calls
n
1000 external zones with up to 2000 matches
n
1000 subzones and supporting up to 3000 membership rules
n
Flexible zone configuration with prefix, suffix and regex support
n
Cisco VCS Administrator Guide (X7.2)
Introduction
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