Chapter 1 - Introduction to the MultiVOIP

The H.323 Gatekeeper acts as the central point for all calls within its zone and provides call control services to registered endpoints. If you choose the proprietary phone book, you establish a master-slave relationship where the master MultiVOIP maintains the phone directory and downloads the directory to each slave unit.

The Gatekeeper/Proprietary Phone Book selection is chosen from the Phone Directory Database dialog box. Before you choose how the data base is going to be used, here are a couple of things to keep in mind:

1.If a Gatekeeper is employed in the network, you need to choose the Gatekeeper option. You can not mix the Proprietary Phone Book with the Gatekeeper. If you choose the Gatekeeper option you can communicate with other third party endpoints that support H.323 (such as Microsoft Netmeeting).

2.If you choose the Proprietary Phone Book, you establish a master-slave relationship in which the master MultiVOIP maintains the phone directory database. All of the phone numbers are listed in the data base so that if you want to communicate with someone in your VOIP network, you can see the phone number in your data base. Everytime you bring up your MultiVOIP the current phone directory is downloaded to your MultiVOIP.

Note: You can still call Netmeeting using the proprietary phone book.

The Gatekeeper

The GateKeeper is a separate application that can operate on a network pc and provides all the controls needed to create, control, and manage an H.323 network zone. The H.323 network zone is all the endpoints (terminals and gateways (MultiVOIPs)) that are registered with the gatekeeper. The gatekeeper function is address translation from LAN aliases for terminals and gateways to IP addresses as defined in the RAS (Registration/Admission/ Status) specification. The RAS Protocol defines the communication with a gatekeeper and support for RTP/RTCP for sequencing audio packets. The H.323 Gatekeeper also provides call-authorization for both accepting and placing calls in its zone, and certain monitoring features such as call permissioning and address resolution.

If you choose the Gatekeeper option, initially you need to communicate with the administrator of the Gatekeeper to register your MultiVOIP. The information you need from the Gatekeeper administrator is the IP address of the Gatekeeper and its port number. Then you need to establish your alias address which includes phone number, channel number, H323 ID which can be a numeric or an alphanumeric value, and your MultiVOIP LAN IP address. The port number is 1720, but if the Gatekeeper uses a different port number, you have to ensure that

Multi-Tech Systems, Inc. MultiVOIP User Guide

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Multi-Tech Systems MVP120 manual Gatekeeper
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MVP120 specifications

Multi-Tech Systems MVP120 is an advanced communication device designed to enhance various applications across industries. It is a part of the Multi-Tech's MVP (MultiVoIP) product line, which is renowned for its versatility and robustness in VoIP (Voice over Internet Protocol) solutions. The MVP120 provides businesses with an efficient way to convert traditional analog voice signals into digital formats suitable for transmission over the Internet or other digital networks.

One of the main features of the MVP120 is its support for up to 12 voice channels. This capability allows multiple calls to be managed simultaneously, making it an ideal choice for businesses with high call volumes. The device offers a seamless integration with existing telephony systems, enabling users to retain their current infrastructure while benefiting from the added advantages of VoIP technology.

The MVP120 utilizes advanced Voice over IP protocols, including SIP (Session Initiation Protocol), which facilitates the establishment, management, and termination of voice sessions over the internet. SIP compatibility enhances interoperability with various service providers and existing communication systems, ensuring a flexible and scalable solution for businesses of all sizes.

Another noteworthy characteristic of the MVP120 is its built-in T.38 fax support. This enables the transmission of fax documents over IP networks, ensuring reliable delivery even in environments where traditional fax machines may experience disruptions. This feature is particularly beneficial for organizations that still rely on fax communication while transitioning to more modern digital systems.

Security is a primary concern in today’s digital environment, and the MVP120 addresses this with comprehensive protocol support, including SRTP (Secure Real-time Transport Protocol) and TLS (Transport Layer Security). These technologies ensure that voice communications remain secure and private, protecting sensitive information from potential threats.

The MVP120 is also designed with user-friendly management and configuration in mind. It features a web-based interface that makes it easy for administrators to set up and manage the device remotely. This simplifies the deployment process and minimizes downtime, allowing businesses to maintain operational continuity.

In essence, the Multi-Tech Systems MVP120 stands out as a powerful tool for businesses seeking to embrace the benefits of VoIP technology while maintaining reliable communication through traditional means. Its combination of voice channels, protocol support, fax capabilities, and security features make it an excellent choice for modern enterprises aiming to enhance their communication systems.
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