UM380 03 010
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Manual Configuration or Upgrade of Software Protocol Options
RSET
When configuring a new system first select the reset option
RSET
to return all configuration
values to their manufacturing default settings. Type:
RSET
<Enter>
Do not select this option if you are re-configuring a specific aspect of a working unit, or after
you have correctly configured the unit.
EXIT
Once you are confident that the configuration is complete and correct return to the main
menu and type:
EXIT
<Enter>
The parameters you have set are stored in non-volatile memory. The converter then
initialises its operational software and enters its normal operational state.
Apart from the time and date, set in the
TIME
menu, no other parameters are finally stored in
NVRAM until you
EXIT
from the main menu. If you reset the unit without going through this
stage the previous settings are restored from NVRAM when the system restarts.
6.2 Manual Configuration and Upgrade Options
The configuration options common to all InterChange iQ 2000 and iQ 2000plus conversions
are described in this section.
6.2.1 Resource Manager Configuration (MGMT)
The Resource Manager task (RM) exercises overall control over the functions of the module.
The purpose of the RM is to control the behaviour of individual protocol stacks and the
interactions which govern conversions. The RMs for the different conversions are very
similar and the same configuration options are common to all.
The MGMT menu provides the dialogue you need to invoke if you have to perform field-
upgrade of an InterChange iQ 2000 unit to InterChange iQ 2000plus. Before attempting
an upgrade you will need to purchase the unit-specific upgrade license key, from your
InterChange supplier.
6.2.2 Channel 0 Configuration (CZ) - Delay Timers
Two timers regulate the sensitivity of higher layer signalling to physical layer problems. The
Delay Down Timer (DDOT) controls the speed with which higher layers are informed of a line
problem. DDOT can be used to desensitise the higher layers to short term line failures of up
to 100 tenths of a second (10 secs). If the line recovers within DDOT the higher layers are
not informed of the problem. The Delay Up Timer (DUPT) controls the speed with which line
recovery is reported. DUPT ensures that the line is properly recovered and stable before higher
layers attempt to use it again. It can be set to up to 10 tenths of a second (1 sec).
The correct values for DDOT and DUPT are specific to the particular connection. For
instance, some clear active calls after a line fault of 2 seconds. Consequently, if DDOT is set
to 20 or more Interchange will not clear calls unilaterally.
DDOT and DUPT are independent of IDT. DDOT/DUPT regulate indications to higher
signalling layers. IDT governs the physical layer handshake across Interchange.
