500-444 VCE Exam Download

 A push sync is triggered when an administrator performs any create, update, or delete operation on a specific configuration item. A push sync sends the configuration changes to all the nodes in the PCCE deployment. A push sync is also triggered when an administrator adds or removes a node from the deployment.

References:

• Troubleshooting Cisco Contact Center Enterprise (CCET), page 2-9
• Implementing Cisco Contact Center Enterprise (CCEI), page 2-10

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cust_contact/contact_center/pcce/pcce_12_5_1/release/guide/pcce_b_1251_pcce-release-notes/pcce_b_1251_pcce-release-notes_chapter_010.pdf

 Cisco Unified Border Element (CUBE) is a session border controller that provides session control, security, interworking, and demarcation for voice and video calls between the enterprise IP network and service provider SIP trunks1. When CUBE is used with CCE and CVP, it provides the following three features:

• Silent Monitor inbound voice calls: CUBE supports the silent monitoring feature for inbound voice calls from the PSTN to the CCE agents. This feature allows supervisors to listen to the agent-customer conversations without being noticed by either party. CUBE uses the built-in-bridge (BIB) capability of the agent phone to fork the media stream and send it to the monitoring server2.
• Secure communication using flow around mode: CUBE supports secure communication using Transport Layer Security (TLS) and Secure Real-Time Transport Protocol (SRTP) for SIP signaling and media streams. CUBE can operate in flow around mode, where it terminates the TLS/SRTP sessions from the service provider and the enterprise, but does not perform any media processing or transcoding. This mode reduces the CPU load on CUBE and preserves the end-to-end media encryption3.
• Normalize SIP messages using SIP profiles: CUBE supports SIP normalization using SIP profiles, which are collections of parameters that modify the SIP messages that pass through CUBE. SIP profiles can be used to resolve interoperability issues between different SIP implementations, such as service providers, CVP, and CCE. SIP profiles can also be used to enhance the functionality of CUBE, such as adding or removing headers, modifying timers, and enabling features4.

References: Cisco Unified Border Element data sheet1, Cisco Unified Border Element Configuration Guide234.

CUBE is a Cisco IOS software feature that provides voice and video connectivity from IP phones to the PSTN or other IP networks. CUBE supports several advanced call control and mobility services, such as:

• Element Grouping: This feature allows you to group multiple CUBE elements into a single logical entity and apply common configuration and dial plan across them. This simplifies the management and scalability of CUBE deployments.
• Time of Day Routing: This feature allows you to route calls based on the time of day, day of week, or date. You can define time periods and time schedules and associate them with dial peers or voice translation rules. This enables you to implement different call routing policies for different time slots, such as business hours, after hours, holidays, etc.
• Call Admission Control: This feature allows you to limit the number of concurrent calls on a CUBE element or a CUBE group based on the available bandwidth or the configured maximum number of calls. This prevents oversubscription of network resources and ensures the quality of service for voice and video calls.

References:

• CUBE Configuration Guide
• CUBE Element Grouping Configuration Guide
• Time of Day Routing Configuration Guide
• Call Admission Control Configuration Guide