500-444 Exam Dumps : Cisco Contact Center Enterprise Implementation and Troubleshooting

A SIP proxy server is a component of a SIP network that handles the setup and termination of calls between SIP devices. It also performs functions such as registration, authorization, network access control, and network security. Some of the functions of a SIP proxy server are:

• Centralizes dial plans: A SIP proxy server can centralize the dial plans for a SIP network, meaning that it can translate and route calls based on a unified set of rules and policies. This simplifies the administration and management of the SIP network and ensures consistent call routing across different devices and locations.
• Helps to centralize the administration and call control: A SIP proxy server can also help to centralize the administration and call control of a SIP network, meaning that it can provide a single point of contact and configuration for all the SIP devices and endpoints. This reduces the complexity and overhead of maintaining multiple SIP servers and devices and allows for easier monitoring and troubleshooting of the SIP network.

References:

• 1: What Is a SIP Proxy? How Does a SIP Server Work? - Nextiva
• 2: What is a SIP Proxy Server and How Does It Work? - ULTATEL Blog
• 3: What is SIP proxy? | Webopedia
• 4: Definition of SIP proxy | PCMag
• 5: All About SIP Proxy: What is a SIP Server? | TelNet Worldwide

n Contact Center Enterprise with Cisco Unified Customer Voice Portal (CVP) and Cisco Unified Border Element (CUBE) deployment, CUBE must be configured as media pass flow-through mode. This means that CUBE will terminate and reoriginate both the signaling and media streams for each call leg. This allows CUBE to perform media manipulation, such as transcoding, transrating, DTMF interworking, and media forking. Media pass flow-through mode is required for CUBE to support advanced features for contact center, such as courtesy call back, contact center survivability, and encrypted (SRTP) trunks. Media pass flow-around mode, where CUBE only terminates and reoriginate the signaling stream and lets the media stream bypass CUBE, is not supported for contact center solutions. A voice gateway must not be dedicated for VXML browser sessions, as CUBE can coexist with VXML gateway on the same platform. Box-to-box CUBE can be used for redundancy, but it is not a mandatory configuration for contact center solutions123. References:

• Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - Advanced Features for Cisco Contact Center2
• Cisco Unified Border Element (Enterprise) Fundamentals and Basic Setup4
• Cisco Unified Border Element for Contact Center Solutions5

 The deployment team is responsible for ensuring that servers designated for use by CCE VMs meet the requirements, including but not limited to Storage System Performance and IOPS (Input/Output Operations Per Second) Requirements. The deployment team is the group of engineers who install, configure, and test the CCE solution at the customer site. They must follow the design specifications and guidelines provided by the design team, and verify that the hardware and software components are compatible and meet the performance and capacity requirements. The deployment team must also ensure that the CCE VMs are deployed on the appropriate servers and have the correct network and storage configurations1. References: Troubleshooting Cisco Contact Center Enterprise (CCET) course outline2, Virtualization for Cisco Packaged CCE Release 11.6(x)1.