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Build intelligent networks with off-the-shelf modules.

BUILD INTELLIGENT NETWORKS WITH OFF - THE - SHELF MODULES

One of the first questions to conftont a system designer when undertaking a design task such as a vendor feature node in the intelligent network is: How much do we buy versus how much do we build?

The trend in system design is swinging toward buying standard, high-level, high-functionality components wherever possible. this has many benefits: shorter time to market, greater chance of initial success, increased supportability, and ability to draw on expertise of the purchased componetns' manufacturers.

Additionally, it allows the project design team to concentrate on solving the problem at which they are tasked, for which they presumably have special expertise--instead of solving related design problems in ancillary fields perhaps not as closely aligned with their skills.

When building intelligent peripherals and feature nodes for the intelligent network, some of the standard components include: general purpose computers, voice mail processors, speech synthesizers, speech recognition equipment, and the Redcom Modular Switching Peripheral (MSP).

The MSP provides the telephony interface between the public network and the other peripherals that are not necessarily telephony related. These other peripherals could be voice mail equipment, radio equipment, and data related equipment. They could also include voice and/or data equipment which is part of special services operators. Other possiblities are only limited by the imagination of the service creators.

The MSP itself represents a telephony toolkit for helping the service creator design featue nodes to support new services. Because the MSP is used in a alrge number of diverse applications, many drawn from fields outside the intelligent network, it is practical to support it as a broad-based product. And becuae it has been in use in many unique applications sine 1984, it is a field-proven device.

Supports Many Interfaces

The MSP supports a wide variety of interfaces to the telephony and nontelephony network.

Among them are line circuits, two-way loop trunks, E&M trunks, ground start ringdown trunks, loop start ringdown trunks, T1 direct digital interfaces, 30+2 direct digital intefaces, DTMF receivers and senders, conference bridges, recorded announcers (digital), answering service interfaces, and synchronous data ports (essentially digital access to the 64-bk/s PCM data).

Basically, the MSP performs the rudimentary telephony functions, shielding the service creator from needing to know all the fine details of public network operations. In this manner, this telephony toolkit allows the host designer--the service designer--to concentrate on the global task at hand, instead of the fine details.

An important part of teh infrasturcture underlying the intelligent network is the set of primitives and functional components--elemental call switching activities the service control point (SCP) can use to direct activities of the services switching point (SSP). They identify an important design characteristic of these primitives: that they be service-independent. These functional components and primitives will also be useful between the SSP and the feature nodes and intelligent peripherals. Any standardized switching component used as a telephony switching device deployed as part of an intelligent peripheral or feature node in teh intelligent network should be compatible with network primitives and functional components.

If the MSP is used as part of the feature node or intelligent peripheral, it is not necessary that the MSP's commands be identical to those of the intelligent network; for the intelligent network is actually communcating with the MSP's host.
COPYRIGHT 1990 Nelson Publishing
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Copyright 1990 Gale, Cengage Learning. All rights reserved.

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Author:Vuksanic, Larry
Publication:Communications News
Date:Jun 1, 1990
Words:552
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