Paradyne SNMP DSU, 7610 manual Device Reset, Loopbacks 2 Loopback Type Initiated By

Testing

Table 7-2. Loopbacks (2 of 2)

Loopback Type	Initiated By		Notes
Network-initiated	H	DDS Network	When IMC is enabled, the aggregate
56 kbps DSU			data stream is looped back to the
Loopback (Non-			network. Cannot be disabled by user.
latching loopback)
Network-initiated	H	DDS Network	Includes optional data scrambling and
64 kbps CC DSU			uses 25-second timer to detect the
Loopback			network sequence. When IMC is
(Latching loopback)			enabled, the aggregate data stream is
			looped back to the network. Can be
			disabled by user.
Remote Digital	H	Remote unit sending	Same as a DSU Loopback but initiated
Loopback		V.54 sequence	by a remote unit via V.54 sequence.
			When IMC is enabled, only user data is
			looped back to the network. Can be
			disabled locally. Refer to Network
			Interface Options, Table A-2.
V.54 Sequences to	H	ATI	Control via CT140 can be disabled.
remote unit	H	NMS	Refer to Data Port Options, Table A-3.
	H	DTE via CT140

Device Reset

The DSU can be reset locally or remotely. From the Control menu, select Reset

Device and press Return. The DSU reinitializes itself, performing a Device

Self-Test. Refer to Self-Test Results Messages, Table 6-2.

Misconfiguring the DSU could make the user interface inaccessible, leaving it in a state where an ATI session cannot be started through the Terminal port or via a Telnet session. If this occurs, DSU connectivity can be restored with a terminal that is directly connected and set for Terminal Port option defaults.

Two methods can be used to restore access to the ATI. Both methods cause a device reset.

HReset Terminal Port ± Allows you to only reset the configuration options related to Terminal port usage. No security-related configuration options are changed.

HReload Factory Defaults ± Allows you to reload the Default Factory Configurations, resetting all of the configuration areas and control settings for security reasons. This method is useful when the user's passwords have been forgotten.

7610-A2-GB20-10 November 1997 7-7