Toshiba Strata DK14 General Description Manual page 214

Features
System Features
Multiple LAN Link: Linking multiple LANs together, using ISDN, is very efficient at the 64
kbps high-speed rates, and data transmission over the digital network provides extremely high-
data accuracy. This would replace the typical LAN bridge and modems in use today, which are
much slower and provide less data accuracy via the analog network. The DK40i and DK424
support BR1 station-side connection of access router devices used in these applications.
High Speed Fax: G4 Facsimile offers high-speed and high-image quality. G4 Fax machines do
not have to be isolated within a stand-alone system. Many G4 Fax machines can also
communicate with G3 Fax machines, because the connection with existing networks is
handled by the ISDN side.
Telecommuting: The idea of employees working at home is a much more effective and
practical option with ISDN services. The employees have access to office technology
necessary to make them work almost as effectively at home as in the office.
Resource Sharing: Local network functions, such as printer sharing and modem sharing, are
supported by connecting these devices through terminal adapters. Users can share equipment
regardless of location. It also eliminates the need for dedicated connections, since all network
resources are available on a dial-up basis.
ISDN BRI through Centrex: This is offered by many local exchange carriers, who offer both
Centrex and ISDN lines. Blending the calling features of Centrex with BRI provides many
customized capabilities. Examples are Caller ID, and the ability to set up data calls between
parties using the 64 kbps B-channel without the need for lower speed modems.
Carrier Gateway: This is the general "catch all" category that connects anything to anything
over the PSTN. Using ISDN for this purpose provides speed, accuracy, and connectivity
advantages for applications like Internet connection, e-mail, Telex, Voice Mail, and Fax
forwarding.
Benefits
Faster call setup times make ISDN call connections faster, because a separate modem-type of
communication with the public network is used. Calls using analog connections or T1 digital
connections can take several seconds longer before the call connection is made, because they send
DTMF tones and wait for audible tones in return.
Immediate Caller ID is provided on ISDN calls, because Caller ID is transmitted with each call
setup message. This makes Caller ID information immediate rather than waiting for this
information to be sent after starting the ringing process as with analog lines.
Higher speed digital data connection is possible on a BRI connection to the ISDN network.
DID-type functionality enables direct incoming calls to be routed and ring at designated
telephones according to the number dialed. This provides DID functionality over ISDN lines
without the additional expense of purchasing a block of numbers from the telephone company and
subscribing to DID service.
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