Paradyne 2001 User Manual page 32

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Commands described in this manual with the suffix n
have several options associated with them. For example,
in the L n command, L0 sets the speaker volume to Low
and L3 sets the speaker volume to High. If no value is
entered for the n suffix, the DataPort 2001 assumes a
zero (0) value (in this case, low volume).
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Valid commands are acknowledged with numeric or word
result codes (unless the result codes have been
disabled using the Q1 command). Appendix F lists all
available result codes with numeric and word
equivalents.