Modes and Configurations
58
V.34bis Series Standalone & Rackmount Modems
Attn Ack Frames (LAPM)
The line labeled "Attn Ack Frames" shows the number of LAPM break
signal acknowledgments sent and received. The next two lines show the
maximum number of bytes allowed in a data frame. The first line shows the
maximum number in effect at the time the status display was obtained. The
second line shows the absolute maximum number agreed upon by the two
modems when the LAPM link was formed. If there are many errors on the
phone line then the maximum number of bytes per data frame is reduced to
increase the throughput.
The last line with a LAPM error correction link indicates the LAPM
connection plus the window size that the modems have agreed they can
both buffer internally in the transmit and the receive directions. The last line
with a V.42bis data compression link indicates the V.42bis connection plus
the directions that compression is operative, the dictionary size and the
string length.
Error Correction/Data Compression Status
MNP Example
TRANSMIT RECEIVE
31135
53113
SECONDS
21250216
21250478
CHARACTERS
15362453
21252634
BYTES
60011 60011
DATA FRAMES
3 0
DUP DATA FRAMES
19972 20000
DATA ACK FRAMES
1 0
ERRORS
0 0
ATTN FRAMES
0 0
ATTN ACK FRAMES
256 DATA BYTES CURRENT MAXIMUM PER FRAME
256 DATA BYTES ABSOLUTE MAXIMUM PER FRAME
CLASS 5, WINDOW SIZE 8
OK
The two columns are for transmit and receive statistics, respectively. The
line labeled "Seconds" shows the number of seconds since the
communications link was formed. In the above example, the modems were
linked for 53113 seconds, or nearly 15 hours, when the status display was
obtained.
Summary of Contents for V.34bis series
Page 10: ...Introduction 6 V 34bis Series Standalone Rackmount Modems ...
Page 22: ...Installation 18 V 34bis Series Standalone Rackmount Modems ...
Page 40: ...Modes and Configurations 36 V 34bis Series Standalone Rackmount Modems ...
Page 65: ...Modes and Configurations V 34bis Series Standalone Rackmount Modems 61 ...
Page 118: ...AT and V 25bis Command Sets 114 V 34bis Series Standalone Rackmount Modems ...
Page 128: ...S Registers 124 V 34bis Series Standalone Rackmount Modems ...
Page 150: ...Index 146 V 34bis Series Standalone Rackmount Modems ...