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Preferred Architecture for Cisco Collaboration Release 15 On-Premises Deployments PAGE 27
Collaboration Edge

Module Component Description mobile and remote access, business-to- business calling, protocol interworking, and cloud connectivity. Cisco Catalyst 8200 / 8300 / 8KV or
Integrated Services Router (ISR) 4461 with PSTN interfaces Enables local PSTN connectivity Cisco Cat8K or ISR 4461 with Cisco Unified Border Element (CUBE) software Enables connectivity from an organization's network to the service provider network for SIP trunks via CUBE Recommended Deployment We recommend the following Collaboration Edge solution for the Cisco Collaboration on-premises Preferred Architecture: Headquarters • Deploy a Cisco Expressway-C and Expressway-E server pair to enable remote Jabber and TelePresence video endpoint registrations, and IM and Presence. Deploy a separate Expressway-C and Expressway-E server pair for secure business-to-business connectivity through the firewall. Cluster both Expressway-C and Expressway- E servers in both pairs. If your deployment does not reach or exceed the scalability limit, you can deploy a single Expressway-C and Expressway-E cluster for both business-to-business and mobile and remote access applications. • Deploy a Cat8K or ISR 4461 as the PSTN gateway or enable Cisco Unified Border Element functionality on the Cat8K / ISR 4461 for voice connectivity from the organization's network to the service provider network through a SIP trunk. • If full redundancy is not required, a single server pair (Expressway-C and Expressway-E) may be deployed. • If full redundancy is required, for CUBE the Cat8K and ISR 4461 should be deployed in active/standby pairs and for Expressway the Expressway-C and Expressway-E servers should be deployed in cluster with multiple pairs.
Remote Sites • Deploy a Cat8K or ISR 4461 as the PSTN gateway. • Deploy Expressway-C and Expressway-E if the remote site has local Internet connectivity and an Internet business-to-business architecture for video calls is required. 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 and a specific set of hardware voice and video devices can be used without VPN, regardless of the location of the endpoint (internal or external to the organization).