Option Switch Settings
External Modem Option Settings
748
SI Installation and Upgrades
June 2004
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Dial Type
This field controls the type of interregister signaling to be used between the
modem and the Central Office. The field has a default of “T” for tone dialing.
Pulse dialing is indicated by “P”. The field length should be 3 characters long.
This field is concatenated with the dial string. This field is not case sensitive.
Default is upper case.
Adjustable
Make/Break
Ratio
This field controls the make/break ratios of pulses and DTMF dialing. The
Intel product information has support for different make/ break options for
pulse dialing only. Intel uses &P0 to select a ratio of 39% make and 61% break
for communication within the United States and Canada. The option &P1 sets
a ratio of 33% make and 67% break for the United Kingdom and Hong Kong.
This field has a blank default and a 5 character long entry. This field is not case
sensitive. Default is upper case.
Dial Command
This field has a default of “D” in a field 3 characters long. This field denotes
the dialing command of the modem. This is a standard command. This field is
not case sensitive. Default is upper case.
No Answer
Time-Out
Most external modems provide a timer that abandons any outbound data call
after a predetermined interval. Some modems disable this timer, allowing an
outbound call to ring indefinitely. Paradyne does not provide this capability
because it is undesirable to have an outbound call attempt to ring indefinitely.
Therefore, the initialization string must contain the following ASCII string to
set the “No-Answer Timer” to the maximum value: S7=255. The internal
modem must have this parameter disabled or set to at least 255 seconds. This is
a non-administrable parameter.
For the modem connection, this parameter is the first initialization string to be
transmitted to the modem. This field is visible on the administration form in
display mode only. The new field is set to S7=255. This hardcoded constant
can be overridden for type approval applications, specifically in the United
Kingdom and other Western European nations, by the use of the “Misc. Init.
Param:” field. (S7=255)
Modem Fields
Modem
Connection
Description
