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Chapter 1. Introduction
1-6 TSU IQ+ User Manual 61200275L1-1
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.
TheTSUIQ+'suniqueDBUcardsarefield-installablebythe
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+.