Compaq 1610 Reference Manual page 125

1. When entering telephone numbers, ensure that the number
that appears on the screen is correct before beginning to dial.
2. Some parameters required for compliance with AUSTEL
specifications are dependent on the Telecommunications
apparatus provided with the Compaq Series 2930A. The
Series 2930A shall be set to operate within the following
limits for compliance with AUSTEL Specifications.
When the user manually initiates a call via equipment
connected to the Compaq handheld PC, the equipment shall
operate within the following restrictions:
a. Without call progress detection—a maximum of three calls
(original plus two retries).
b. With call progress detection (which ensures the line will be
released after detection of tones indicating the call will not
be successful)—a maximum of ten calls (original plus nine
retries).
c. If the series of calls noted in a or b are unsuccessful, no
further attempts shall be made to obtain the required
number within the next 30 minutes (unless manually
initiated).
Failure to meet the above requirements may negate
user rights under the AUSTEL Terms of Service.