What are a fast start and a slow start, and how do they differ?

 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

What are the different call flows supported in H323?

 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 which situation do we not require MGCP fallback configuration with SRST configuration?

 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

What is AAR?

 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

What is a default dial-peer?

 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

What is the use of region in CUCM?

 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

What are the various ways in which we can add users in CUCM?

 Cisco Unified Communications Manager (CUCM) is a powerful tool that enables organizations to manage their communication infrastructure, including voice and video calls, messaging, and conferencing. One of the key functions of CUCM is user management, which includes adding new users to the system. In this article, we will discuss the various ways in which users … Read more

What is BAT in CUCM?

 In Cisco Unified Communications Manager (CUCM), BAT stands for Bulk Administration Tool. It is a web-based application that allows administrators to perform batch operations on CUCM objects, such as phones, users, lines, and devices. With BAT, administrators can create, update, or delete multiple objects simultaneously, which can save a significant amount of time and effort … Read more