Cisco Cisco Expressway Maintenance Manual
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Flexible zone configuration with prefix, suffix and regex support
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Can be neighbored with other systems such as a Cisco VCS or other gatekeepers and SIP proxies
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n+1 redundancy, can be part of a cluster of up to 6 Expressways for increased capacity and redundancy
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Intelligent Route Director for single number dialing and network failover facilities
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Call Policy (also known as Administrator Policy) including support for CPL
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Support for external policy servers
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AD authentication for administrators of the Expressway
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Embedded setup wizard using a serial port for initial configuration
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System administration using a web interface or RS-232, SSH, and HTTPS
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Intrusion protection
Note that endpoints or other devices cannot register to the Expressway.
Optional features
Some Expressway features are available by the purchase and installation of the appropriate option key:
SIP to Microsoft Lync 2010 / 2013 gatewaying
The Microsoft Lync back-to-back user agent (Lync B2BUA) on the Expressway can be used to route SIP
calls between the Expressway and a Microsoft Lync Server. It provides interworking between Microsoft ICE
(used by Lync clients) and media for communications with standard video endpoints.
calls between the Expressway and a Microsoft Lync Server. It provides interworking between Microsoft ICE
(used by Lync clients) and media for communications with standard video endpoints.
The Microsoft Interoperability option key is required for all types of communication with Lync 2013.
Advanced Networking
The Advanced Networking option enables the LAN 2 Ethernet port on the Expressway-E, allowing you to
have a secondary IP address for your Expressway. This option also includes support for deployments where
the Expressway-E is located behind a static NAT device, allowing it to have separate public and private IP
addresses.
have a secondary IP address for your Expressway. This option also includes support for deployments where
the Expressway-E is located behind a static NAT device, allowing it to have separate public and private IP
addresses.
This configuration is intended for deployments where the Expressway-E is located in a DMZ between two
separate firewalls on separate network segments.
separate firewalls on separate network segments.
Cisco Expressway Administrator Guide (X8.2)
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Introduction
About the Cisco Expressway