Cisco Unified Communications (UC) is a robust platform that offers users voice, video, and data services. To ensure effective communication, it is essential to understand the various components and protocols that make up the UC architecture. In this article, we will explore some key concepts and questions related to Cisco UC. Why is it … Read more
In H323 protocol, TCS (Terminal Capability Set) and OLC (Open Logical Channel) are important elements that allow communication between endpoints. TCS is a message exchange between H323 endpoints that is used to exchange the terminal capabilities of each endpoint, such as the supported codecs, video resolution, frame rate, and other communication capabilities. When two endpoints … Read more
Early media is a feature of telecommunication systems that allows the caller to receive audio or video feedback before the actual call is connected. It is also known as pre-connect media or ringback tone. Early media is used to provide callers with feedback that the call is being processed and to keep them engaged during … Read more
Fast start and slow start are two different call setup procedures used in the H.323 protocol suite for real-time audio and video communication between endpoints. In this article, we will discuss the differences between a fast start and a slow start and their respective advantages and disadvantages. Slow Start: Slow start is the default call … Read more
H.323 is a protocol suite that is widely used in IP telephony networks to facilitate real-time audio and video communication. It is a widely accepted standard for voice and video communication over IP networks. In H.323, there are various call flows that are supported to facilitate communication between different endpoints. In this article, we will … Read more
In Cisco Unified Communications Manager (CUCM), Media Gateway Control Protocol (MGCP) fallback is a feature that allows organizations to ensure continuous call processing when the primary call control server is unavailable. However, in some scenarios, MGCP fallback may not be required when using Survivable Remote Site Telephony (SRST) configuration. In this article, we will discuss … Read more
In Cisco Unified Communications Manager (CUCM), Automated Alternate Routing (AAR) is a feature that allows organizations to automatically reroute calls when the primary call path is unavailable. AAR is particularly useful in scenarios where network congestion, outages, or other issues prevent calls from being routed over the primary call path. In this article, we will … Read more
In Voice over IP (VoIP) networks, a dial-peer is a Cisco IOS configuration that defines the routing of calls between endpoints. A default dial-peer is a special type of dial-peer that is used to route calls that do not match any other configured dial-peer. In this article, we will discuss the importance of default dial-peers … Read more
In Cisco Unified Communications Manager (CUCM), regions play a critical role in determining the quality and reliability of voice and video calls between different locations. In this article, we will discuss the importance of regions and how they are used in CUCM. Regions in CUCM define the characteristics of the audio and video codecs used … Read more
Mobile Voice Access (MVA) and Unified Mobility (UM) are two key features of Cisco Unified Communications Manager (CUCM) that allow users to access their phone features from a mobile device or remote location. In this article, we will discuss these two features and how they can benefit organizations. Mobile Voice Access (MVA) Mobile Voice Access … Read more