The ROLM 9750 Business Communications System is a highly efficient,
computer-controlled voice and data switching system. It enables users
to reach many information sources quickly and efficiently while
providing cost-effective management of voice and data communications.
The 9750 BCS features a digital voice and data controller, devices to
provide voice and data connectivity, and integrated applications - all
supported by a wide range of customer support services.
Five Models Offer Optimized Solutions
Five modes of the 9751 CBX are available, each optimized to meet the particular
needs and capacity requirements of a given organization.
The Model 10 brings the power and applications of
the 9751 CBX to small and medium-size business in a compact, cost-effective package. Up
to 100 stations can be supported by a single modular cabinet (single shelf) system.
Cabinets two and three each supporting up to 250 stations, can be added in an integrated,
stackable fashion to bring the Model 10's capacity to 600 stations. The Model 10 is designed
to operate in standard office environments. Release 9005 supports the 9751 CBX Model
10 with all the single-card interfaces and a full range of applications. The Model 10 has
the same data connectivity capability as the other 9751 CBX models, is fully data compatible,
and with the optional Data Front End Processor II(DFE II), becomes a highly efficient system
for voice and data integration.
The Model 20 comes equipped for the immediate use of
integrated voice and data. The Model 20 (with the standard high-capacity cabinets) was
designed for organizations which require 100 to 720 stations.
The Model 40 uses the standard high-capacity 9751
cabinet to support up to 2,000 stations in a single-node configuration of up to five cabinets.
It can be easily customized and arrives on site as a "data ready" system. The Model 40, like
all other models of the 9751 CBX, is fully digital except for any basic services which
require analog telephones.
The Model 50 adds fault tolerance to the single-node
offering for organizations that require an extra level of system availability. The 9751 CBX
Model 50 offers common control redundancy on one shelf and full redundancy in the following
components: shared electronics, ROLMbus 295E, Advanced Diagnostics Processor, and Data
Front End Processor II (DFE II) Cards. Power redundancy is optional.
The Model 70 is a multi-node, fault-tolerant solution
for distributed and large installations. The Mode 70 can support more than 20,000 stations
in 15 nodes. The Model 70 offers redundancy, like the Model 50, with added redundancy in the
hardware supporting the multi-node configuration: the Control Packet Network(CPN, for CPU-to-to-CPU
communications) and the internode Links (INLs, the node-to-node links). Power redundancy is
optional. Model 70 nodes may be:
- Co-located: up to 200 feet with right-of-way, connected with twinaxial INLs;
- Distributed: up to 20,000 feet with right-of-way, connected with fiber-optic INLs;
- Remote: up to 50 miles, or with no right-of-way, connected using Extended Digital
Interties (XDI) over standard T1 facilities.
Powerful software is the key to providing flexibility and
expandability throughout the 9751 CBX product line. Both Release 9004.4 and Release 9005 software
offer reliable, applications-rich solutions for your needs. Release 9005 was built on the
solid base of the 9004 software.
Advanced Technology Hardware
Al models of the 9751 CBX are built for heavy usages and high reliability. Among
the key hardware components are:
The Rolmbus 295E, a high-speed parallel bus whose 295 Mbps of band width per node
will easily meet your organization's current and future traffic-carrying requirements.
The ROLMbus 295E supports up to 1,045 simultaneous conversations per node.
With Release 9005 single-card interfaces enable denser component packing while improving
reliability. Denser packing allows more stations and trunks to be supported in less space, and
reduces the operating costs of the system. Single-card interfaces plug into any slot on the
A high-speed processor, the CPU is introduced with Release 9005 to support a wide range of call
handing and applications requirements. Single-node systems support 7,500 to 11,000 busy hour
call attempts (BHCA). Multiple-node systems support up to 165,000 BHCA.
A Complete Family of Products
A basic yet crucial requirement of any telecommunications system
is to provide flexible, reliable, and easy-to-use station equipment.
The 9750 BCS utilizes the ROLMphone family of digital telephones. All operate off ROLMlink, a
proprietary digital protocol which uses a single twisted pair wire to deliver 256 Kbps of voice,
data, and control bandwidth to the desktop. All ROLMphones are easily configurable and feature
single-button access to CBX features and frequently called numbers, programmable keys, and convenient
on -hook dialing.
ROLMphone models include:
- Rolmphone 120 (single station)
- ROLMphone 240 Basic (up to 11 stations)
- ROLMphone 240 (up to 11 stations, speakerphone)
- ROLMphone 400 (up to 29 stations, speakerphone, display)
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