Lucent Technologies 8.2

DEFINITY ECS Release 8.2

Administrator’s Guide

555-233-506 Issue 1

April 2000

Managing data calls

426Wideband Switching

Guidelines and examples

This section examines wideband and its compo ne nts in relation to the following

specific customer usage scenarios:

■Data backup connection

■Scheduled batch processing

■Primary data connectivity

■Networking

Data backup connection

Using wideband for data transmission backup provides customers with alternate

transmission paths for critical data in the event of primary transmission path

failure.

Scheduled batch processing

Scheduled batch processing applications are used for periodic database updates

(for example, retail inventory) or distributions (for example, airline fare

schedules). These updates are primarily done after business hours and are often

referred to as nightly file transfers. Wideband meets the high bandwidth

requirements at low cost for scheduled batch processing. In addition, wideband

allows the dedicated-access bandwidth for busy-hour switch traffic to be used for

these applications after business hours; no additional bandwidth costs are

incurred.

The non-ISDN backup data connection is also appropriate for scheduled batch

processing applications. Administered Connections are used to schedule daily or

weekly sessions originating from this application.

Primary data connectivity

Permanent data connections (those always active during business hours), such as

interconnections between LANs, are well suited for DEFINITY ECS when

ISDN-PRI endpoints are used. The ISDN end-to-end monitoring and the

endpoint’s ability to react to failures provide for critical data availability needs.

With ISDN, endpoints can detect network failures and initiate ba ckup connect ions

through the switch; ISDN endpoints can also establish additional calls when extra

bandwidth is needed.

Any failures not automatically restored by DEFINITY ECS are signaled to the

endpoint application, which can initiate backup data connections over the same

PRI endpoint. DEFINITY ECS routes the backup data connections over alternate

facilities if necessary.