Cisco Cisco Expressway Maintenance Manual
Expressway base applications
The Expressway is available with alternative base applications as described below.
Expressway-C
Expressway-C 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. Expressway-C
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.
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. Expressway-C
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.
Expressway-E
The Expressway-E deployed with the Expressway-C 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.
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.
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.
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 Expressway-E 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.
traverse any number of firewalls regardless of SIP or H.323 protocol.
Standard features
The primary purpose of the Expressway 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.
Cisco Unified Communications Manager for remote workers, without the need for a separate VPN client.
Rich media session features
The following features are available when rich media session licenses are installed on the Expressway:
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SIP Proxy
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SIP / H.323 interworking
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IPv4 and IPv6 support, including IPv4 / IPv6 interworking
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QoS tagging
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Bandwidth management on both a per-call and a total usage basis
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Automatic downspeeding option for calls that exceed the available bandwidth
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URI and ENUM dialing via DNS, enabling global connectivity
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Up to 100 rich media sessions on Small/Medium VM server deployments and 500 rich media sessions on
Large VM server deployments
Large VM server deployments
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1000 external zones with up to 2000 matches
Cisco Expressway Administrator Guide (X8.1.1)
Page 11 of 343
Introduction
About the Cisco Expressway