6
Call Test (ct) Command
For a 3900 Series modem, three different requests can be performed to initiate a call test. These
tests are invoked by using a new field which appears on the input form when 3900 Series device
addresses are specified in the device field. This field is defined as follows.
Test type
Enter the call test to be performed. Valid selections are as follows:
clear counter – Resets the call attempts counter within the device. The modem will
attempt to dial backup for a maximum of 10 times. At this point, the modem must be
manually commanded to dial or reset before another dial backup attempt can be executed.
dial tone – Causes the modem to go offline and recognize a dial tone. Once a valid dial
tone is recognized, the test completes by releasing the dial line. Leased-line operation is
interrupted by this test.
ring detect – Causes the modem to look for a ring tone for a maximum of 30 seconds
and terminates the test when a ring tone is detected. The modem does not answer the
inbound call while running the test, but aborts immediately. Leased-line operation is not
interrupted by this test.
NOTE
The PSTN Test fail alert is reported upon failure of the dial tone or
ring tone detect test.
Call Test Results Form
The Call Test results form displays the following possible result messages:
•
Call test passed
•
no dial tone
•
no ringing tone
The no dial tone and no ringing tone messages are displayed if the call test failed.
