Data Compression - Multitech DataTalker DT101 Owner's Manual

DataTalker Owner's Manual
F.10 Compression and Maximum Block Size Commands

Data Compression

The data compression (&E14) command enables data compression.
Maximum Block Size
The maximum size of Reliable mode data blocks can be controlled with the &BS command.
MNP 3 sends blocks of 1 to 64 characters. MNP 4 and 5 typically send blocks of 1 to 256
characters and LAP-M typically sends 128 characters. For MNP classes 4 and 5/LAP-M,
reducing the block size to 64 characters may give a smoother flow of data and better throughput
on noisy phone lines. Using smaller block sizes over good phone lines may cause a slight loss in
throughput (speed).
AT&BS0 = Maximum transmit block size of 64 characters
AT&BS1 = Maximum transmit block size of 128 characters (LAP-M) 256 characters (MNP)
The factory default setting is &BS1.
140
&BS