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H.323 Gatekeeper Overview
White Paper In fact, many consider it the "brains" of an H.323 network, as it provides authorization and authentication, keeps call detail records, ties into network management systems, performs address resolution, monitors the network, manages bandwidth, and... [03 Jul 2008]
IP Telephony Inter-Gateway Protocols
White Paper The technologies needed to encode and transmit voice and fax traffic had been perfected, but the art of call control and address management for large corporate or service provider platforms still needed to evolve. [03 Jul 2008]
V.150 Modem Over IP
White Paper Other protocols, such as H.323 call setup have been adjusted to enable MoIP calls over hybrid PSTN-IP networks. Modem traffic over a hybrid of switched and packet type networks has become a feature needed in nowadays' Gateway systems. [21 May 2008]
H.323/RSVP Synchronization for Video over IP
White Paper This paper provides the details necessary to implement RSVP and to synchronize it with the different H.323 call procedures. The paper gives a short description of the RSVP protocol and summarizes H.323 call signaling. [10 Apr 2008]
IP Bandwidth Guide
White Paper The purpose of this paper is to explore IP (H.323) bandwidth issues, as well as dispel some common misconceptions about the call bandwidth requirements of different call scenarios over TCP/IP networks. [10 Apr 2008]
PathNavigator: Deployment Guide
White Paper PathNavigator is a Call Processing Server (CPS) for multimedia communications, primarily video communications. PathNavigator is used to manage the call sessions between terminals, multipoint control units (MCU), and Gateways (GW), using both the... [10 Apr 2008]
Managing Call Flows Using SIP
White Paper This is the fifth of six technical briefing papers that discusses the Session Initiation Protocol, or SIP, which is used to manage the call establishment and disconnect procedures within converged networks. [12 Dec 2007]
Vonage Uses Cisco Solutions to Quickly Deploy Unique, Cost-Effective VoIP Services
White Paper Cisco Voice Gateways support a variety of call-control protocols, including H.323, Media Gateway Control Protocol (MGCP), and SIP. Vonage is a leading provider of carrier-grade, SIP-based VoIP communications solutions wrapped in a compelling... [02 Aug 2007]
IP poised to storm the call centre
Comment Don't call it a revolution but Datamonitor analyst Daniel Hong says VoIP will soon become mainstream in call centres, with the UK lagging greenfield markets such as India and China. The IT industry has a tendency to over-hype new technologies and... [16 Feb 2005]
Deploying Video Telephony
White Paper Video telephony leverages the intelligence of IP telephony to provide advanced features that are not available in traditional IP videoconferencing deployments: call forwarding, call hold, call park, class of service restrictions, ad-hoc... [14 Feb 2005]
Credit Union Simplifies With SIP-Based IP PBX Communications Solution
White Paper Dupaco's credit union's growing number of branch offices demanded a more feature-rich call routing system - one that could also be modified quickly and easily. Dupaco Community Credit Union serves the employees of the Dubuque Packing company. [15 Dec 2004]
VoIP Vendors Pass SIP Test
White Paper SIP is a relative youngster compared with the ITU's H.323 specification for voice-over-IP call control, and to achieve this level of interoperability so quickly via SIP is impressive. It was found that SIP-based basic interoperability works, and... [12 Dec 2004]
H.323 and SIP Integration
White Paper Cisco offers packet voice solutions that offer architectural and protocol flexibility, including the choice of H.323 [International Telecommunications Union (ITU) - T Recommendation H.323], Media Gateway Control Protocol (MGCP), and Session... [15 Nov 2004]
Cisco White Paper: How to Configure Cisco's Core SIP Products
White Paper It is a peer-to-peer technology, similar to H.323, where endpoints possess the capability to initiate and receive sessions without the assistance of a call-processing agent such as those used with the Media Gateway Control Protocol (MGCP) and... [04 Nov 2004]
Gateway to Gatekeeper (H.235) and Gatekeeper to Gatekeeper (IZCT) Security Troubleshooting Guide
White Paper H.323 networks have different kinds of configurations and call flows. This document attempts to document most of the security concerns with H.323 networks that involve gatekeepers. This paper summarizes the way each feature works and how to... [08 Sep 2004]
