Datasheet

Cisco Preferred Architecture for
Midmarket Collaboration PAGE 26
Collaboration Edge
Recommended Deployment
Headquarters
•
Deploy a Cisco Expressway-C and Expressway-E server pair to enable remote Jabber and TelePresence video
endpoint registrations, IM and Presence, and secure business-to-business connectivity through the firewall. Cluster
both Expressway-C and Expressway-E servers in both pairs.
•
Deploy Cisco ISR as the PSTN gateway, or enable CUBE functionality on the Cisco ISR for voice connectivity from
the organization’s network to the service provider network through a SIP trunk.
Note: If full redundancy is not required, a single server pair (Expressway-C and Expressway-E) may be deployed.
Remote Sites
•
Deploy Cisco ISR as the PSTN gateway.
Teleworker Sites
•
For video-enabled sites, deploy Cisco TelePresence endpoints utilizing the Expressway-C and Expressway-E
infrastructure at headquarters or another site.
•
In addition, the Cisco Jabber client can be used without the VPN, regardless of the location of the endpoint (internal
or external to the organization).
•
Legacy audio and video-enabled phones can be deployed with VPN technologies. Depending on the phone type,
some of them have an embedded VPN client and may be deployed without a VPN hardware client. For more
information on each phone model, refer to the product documentation.
Benefits
This deployment provides the following benefits:
•
The Cisco ISR supports standards-based interfaces and various PSTN types, so it can be deployed globally.
•
Instead of traditional PSTN interfaces, CUBE functionality can be enabled on the Cisco ISR if a SIP trunk is used.
•
The Cisco ISR can be used for WAN connectivity.
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Cisco Expressway provides calling, presence, instant messaging, voicemail, and corporate directory services for
Cisco Jabber and TelePresence video endpoints.
•
Cisco Expressway enables video communications between organizations, partners, and vendors over the Internet.
Deployment Best Practices
Cisco Expressway
Cisco Expressway provides secure firewall and NAT traversal for mobile Cisco Jabber and TelePresence video endpoints
(Figure 13) and secure business-to-business communications (Figure 14). Cisco Expressway consists of two applications:
Expressway-C and Expressway-E.
Deploy Cisco Expressway-C inside the network, and deploy Expressway-E in the demilitarized zone (DMZ) by connecting
separate network ports on Expressway-E to the organization’s network and to the DMZ.
Cisco fully supports a virtualized Expressway-E in the DMZ; however, a dedicated server can be deployed based on the
company’s security requirements.