Dialogic ATM Server Adapter

ATM Network Interface Boards
 

Features and Benefits

SCSA™, CT Bus™ (ECTF H.100 and H.110 ) compatible solution, plays into existing CTI applications

— Build distributed, redundant and scalable multinode switching and media server systems
— LAN Emulation support on ATM preserves existing LAN applications

No limitations on number of nodes or distance between nodes

Multiple ATM adapters in single chassis supported; allows development of fault tolerant systems

True integration of voice, video, fax, and data

Client/server architecture provides excellent scalability and flexibility

AAL/1 and AAL/5 available bit rate with LAN emulation for voice, video, data services, and distributed systems over a standard ATM network

SCbus™, CT Bus to AAL/1 adaptation with 4096 virtual circuits enables advanced CT servers with telecom media streaming over ATM

 

Applications

+10K port switching systems

Enhanced services platforms

ATM-based PBXs

Integration of voice and data over WAN

Telemarketing/call centers

Audiotex

Unified messaging/voice messaging

Interactive voice response (IVR)

Predictive dialers

Operator services

Fax mail/fax-on-demand

Multimedia applications (voice, video, and data)

The Dialogic ATM Server Adapter™, manufactured by IML (Montreal, Canada) is the industry's first CT bus/SCbus-compatible ATM board. It provides full AAL/1 (constant bit rate) and AAL/5 (variable bit rate) support. The Dialogic ATM Server Adapter is ideal for large switching systems, fault tolerant enhanced services platforms, and ATM-based customer premises equipment. ATM allows developers to build flexible, scalable, and fault tolerant computer telephony (CT) applications.

As a principal member of the ATM Forum, Dialogic is active in the creation of ATM standards which allow easy interconnection of multivendor equipment. Dialogic is committed to providing a suite of open, standards-based ATM products for SCbus and CT Bus connectivity to enable the development of flexible, high-speed applications.

ATM Overview

Asynchronous transfer Mode (ATM) is a cell-oriented switching and multiplexing technology that utilizes fixed-length packets to carry a variety of traffic types. ATM provides a flexible and common architecture for local and wide area networks in order to implement new applications and simplify networks. Both the ATM Forum and the ITU have been involved in developing standards that will support a true multivendor network.

ATM has several advantages over other technologies:

ATM is a connection–oriented technology. Virtual circuits are set up in the network, allowing two end-points to communicate. These circuits can have specific Quality of Service (QoS) parameters assigned to them. This allows developers and network managers to give certain types of traffic, priority.

ATM packet size is fixed at 53 bytes. This allows for quicker packet switching and less delay within the network. The result is minimum latency.

ATM's uniform handling of services allows a single network to meet the needs of many services. Cell switching technology combines the advantages of both, packet switching for variable bit rate (VBR) services like data, and circuit switching for constant bit rate (CBR) services like voice, video, and imaging.

ATM can be used to build large switching systems in a CT environment. ATM technology allows developers to build +10K ports in one system. Multiple ATM adapters can also be placed in a single chassis to provide a fully redundant, fault tolerant environment that meets the requirements of telecommunications service providers. ATM offers seamless integration of voice and data, with one wire to the desktop. Its flexibility and scalability will support larger and more robust systems than were possible in the past.

Configurations

Figure 1 shows a geographically distributed ATM-based switching network. Each node consists of an 8 x 480 port chassis linked by an ATM switch. The four nodes, each located in a different city, are linked via a public ATM network.

Figure 2 shows a fully redundant, ATM-based enhanced service platform. Each chassis has two ATM adapter boards connected separately to an ATM Switch. This provides a fault tolerant platform that can be used in a telephone company environment.