Paradyne 3551 manual Backup Configuration Options

Configuring the Unit

Table 5-9

(1 of 2)

Backup Configuration Options

Auto Bckup:Disab

Next Enab Disab Prev

Automatic Backup (only displayed when a DBM is installed, or an external DBU is configured to originate backup). Controls automatic initiation of a call setup attempt to a remote DBM or modem when there is a failure of the DDS network. (Automatic dial attempts begin after the Network Time-out expires.)

Enab	Ð	Select to initiate backup when there is a failure of the DDS network. The DSU waits for a period equal to
		DDS Time-out, and if the DDS network is still down, it attempts to establish a dial backup connection to
		the remote DBM.
Disab	Ð	Select so that no automatic dial backup connections are attempted.

Backup Dir: 1

Next Chang Prev

Backup Directory (only displayed when a DBM is installed). The DBM can store 10 telephone numbers or dial strings, identified by the numbers 1 through 10. Selecting the Backup Directory identifier displays the telephone number stored in that directory.

Chang Ð Select to enter or change the telephone number that is displayed.

FacAlOnCMI:Disab

Next Enab Disab Prev

Facility Alarm on Control Mode Idle (only displayed when Full Mode is enabled, when a DBM is installed, or an external DBU is configured to originate backup). Determines whether the DSU treats a control mode idle (CMI) condition as a facility alarm to trigger automatic dial backup. Configuration option Auto Bckup must be enabled, and RTS Cntrl set to FrcOn.

Enab	Ð	Select if the DSU should try and attempt to establish a dial backup connection to a remote DSU after the
		Network Time-out.
Disab	Ð	Select if a dial backup connection should not be attempted when CMI is detected.

AutoRestor:Disab

Next Enab Disab Prev

Automatic Restoration. Controls whether the DSU automatically terminates the dial backup call when the DDS circuit has returned to service.

On point-to-point circuits, a Digital Test is run to verify the DDS network. If the Digital Test is successful, user data is switched back to the DDS circuit.

For a multipoint network with dedicated multipoint dial backup, each tributary may be configured for Auto Restor, but will not occur unless backup was initiated by the tributary. The DDS network is not verified before data is switched back to the DDS network.

Enab	Ð	Select if restoral of the DDS circuit should trigger automatic restoration (after the Restoration Time-out
		expires).
Disab	Ð	Select if restoral of the DDS circuit is not to trigger automatic restoration.

NtwkTimOut: 0:20 for a control DSU; 01:00 for a tributary DSU

Next Chang Prev

Network Time-out(only displayed when Full Mode is enabled). Specifies the length of time the DDS network must remain out of service before the dial backup call attempt sequence is made. (Auto Bckup must be enabled.) When configured for nondisruptive diagnostics, rate adaption, or if TDM/Flex is enabled, this configuration option must be set to greater than or equal to 20 seconds.

Chang Ð Select to enter or change the current settings, which can range from 1 second to 30 minutes. The cursor has two positions: a minutes field with a range of 0 to 29, and a seconds field with a range of 00 to 59.

3550-A2-GB20-20 December 1996 5-21