8-4
C
HAPTER
8: C
ONTROLLING
D
ATA
R
ATES
Controlling Link
Speeds with &N
and &U
You can use the &N and &U commands to control link speeds.
Controlling Link
Speeds
Use the following table to determine how to use &N and &U commands:
The default values for &N and &U are 0. If you change these values, you
will limit the speeds at which you can connect. 3Com recommends that
you do not alter these values.
Limiting the Highest
Possible Connect
Speed
The &N command, when used in conjunction with the &U command,
allows you to limit the highest possible connect speed. If a remote
modem attempts to connect to your Business Modem at a speed higher
than &N, your Business Modem will not allow it to connect.
For a complete list of connect speeds, see the table in section
&N and &U
Command Values
.
To limit the
Use
Highest possible connect speed
AT&N
Lowest possible connect speed
AT&U
Range of possible connect speeds
AT&N
and
AT&U
To limit the
Use this command
Where x is
Highest possible connect
speed
AT&N=x
A value from 0 to 32
Summary of Contents for U.S. Robotics 56K Voice
Page 14: ...4 ABOUT THIS GUIDE...
Page 32: ...1 18 CHAPTER 1 CONNECTING TO YOUR ISP...
Page 42: ...3 6 CHAPTER 3 MODES OF OPERATION...
Page 64: ...7 4 CHAPTER 7 CONTROLLING EIA 232 SIGNALING...
Page 72: ...8 8 CHAPTER 8 CONTROLLING DATA RATES...
Page 80: ...9 8 CHAPTER 9 ACCESSING AND CONFIGURING THE BUSINESS MODEM REMOTELY...
Page 96: ...11 6 CHAPTER 11 FLOW CONTROL...
Page 108: ...12 12 CHAPTER 12 HANDSHAKING ERROR CONTROL DATA COMPRESSION AND THROUGHPUT...
Page 112: ...13 4 CHAPTER 13 DISPLAYING QUERYING AND HELP SCREENS...
Page 124: ...14 12 CHAPTER 14 TESTING THE CONNECTION...
Page 132: ...15 8 CHAPTER 15 TROUBLESHOOTING...
Page 162: ...B 14 APPENDIX B ALPHABETIC COMMAND SUMMARY...
Page 168: ...C 6 APPENDIX C FLOW CONTROL TEMPLATE...
Page 210: ...14 GLOSSARY...