ADTRAN TSU IQ+, 1204002L2 Telnet, Dial Backup Operation, Interface Card Options, Ethernet Card

Chapter 1. Introduction

TELNET

Telnet provides a password-protected, remote login facility to the TSU IQ+. Telnet allows a user on a network manager to control the TSU IQ+ through the terminal menus.

DIAL BACKUP OPERATION

The TSU IQ+ dial backup (DBU) option cards provide single or multiple sight backup, depending on the DBU card option selected. The TSU IQ+ can be configured to originate a call based on physical layer conditions (i.e., port failures) and/or PVC outages. Once the criteria are met, the TSU IQ+ establishes a call to the configured phone number and the connection is used to carry traffic for the PVC(s) configured for DBU operation.

In the case of PVC outages (not physical layer port failure), the TSU IQ+'s two-port design allows the TSU IQ+ receiving the call to continue to use the T1 frame relay circuit for PVCs that are not affected by the outage, while using the DBU interface for PVCs that are inactive due to the outage. A TSU IQ+ with multiple PVCs to multiple sites can also originate a call to one site during an outage and restore connection for PVCs to that destination.

The TSU IQ+'s unique DBU cards are field-installable by the customer. See Installation on page 2-1 for information on installing DBU cards. The DBU cards are compatible with other ADTRAN products supporting DBU. The backup options are described in the following section, Interface Card Options. Contact the local telco provider to determine which services are available in your area. See Applications on page 4-1 for more information, including an example of a dial backup application.

INTERFACE CARD OPTIONS

Ethernet Card

This option card connects to an ethernet LAN, providing communication of management traffic between the LAN and the TSU IQ+.

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