At commands for testing and debugging – Actiontec electronic Plug n' Play Voice/Fax Modem V.90 ISA User Manual
Page 58
58
AT Commands for Testing and Debugging
The following commands are to be used for testing and debugging only and are not
meant for general use.
&&C
Write to/Read from DSP Register
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Line-to-Line Loopback
This command provides a loopback for line-to-line.
&&R
Write to/Read from DSP RAM Location
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&Tn
Self-Test Commands
This command allows the user to perform diagnostic tests on the modem. These tests
can help to isolate problems when experiencing periodic data loss or random errors.
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