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Appendix F 117
AT" (Quote) Commands
"H
n
V.42bis Compression Control
Controls V.42bis data compression over an error correction link.
"H0: Disable V.42bis.
"H1: Enable V.42bis only when transmitting data.
"H2: Enable V.42bis only when receiving data.
* "H3: Enable V.42bis for both directions.
Result Codes:
OK Returned when
n
= 0, 1, 2 or 3.
ERROR Returned for any other value of
n
.
"N
n
V.42bis Dictionary Size
512 bytes < btlz_dict_size < maximum RAM allows, default is 1.5 Kbytes.
"N0: 512 bytes.
"N1: 1024 bytes.
"N2: 1536 bytes
Result Codes:
OK Returned when
n
= 0, 1 or 2.
ERROR Returned for any other value of
n
.
"O
n
Select V.42bis Maximum String Length
Selects the string size for V.42bis compression.
n
= 6-64.
* Default = 32