Controlling Link Speeds with &N and &U
8-5
Limiting the Lowest
Possible Connect
Speed
The &U command allows you to limit the lowest possible connect speed.
If a remote modem attempts to connect to your Business Modem at a
speed lower than &U, your Business Modem will not allow it to connect.
See the table in the section
&N and &U Command Values
for connect
speed values.
Limiting a Range of
Possible Connect
Speeds
By setting &N and &U values, you can limit the range of speeds at which
your Business Modem connects. If a remote modem does not connect to
your Business Modem at a range between the speeds designated by the
&N and &U commands, your Business Modem will not allow it to
connect.
The link speed associated with the &U argument CANNOT be greater
than the link speed associated with &N argument.
Use the following table to understand the relationship between &U and
&N commands:
To limit the
Use this command
Where x is
Lowest possible connect
speed
AT&U=x
A value from 0 to 32
If &U
And &N
Then your modem
Equals zero
Equals zero
Connects at the highest possible
speed.
Equals zero
Is greater than zero
Connects at the &N speed only.
Is greater than zero
Is greater than zero and
greater than &U
Connects at the highest possible
speed in the range from &U to &N.
Содержание OfficeConnect 56K Business
Страница 1: ... http www 3com com 3Com OfficeConnect 56K Business Modem Command Reference Published January 1999 ...
Страница 14: ...4 ABOUT THIS GUIDE ...
Страница 32: ...1 18 CHAPTER 1 CONNECTING TO YOUR ISP ...
Страница 42: ...3 6 CHAPTER 3 MODES OF OPERATION ...
Страница 64: ...7 4 CHAPTER 7 CONTROLLING EIA 232 SIGNALING ...
Страница 72: ...8 8 CHAPTER 8 CONTROLLING DATA RATES ...
Страница 80: ...9 8 CHAPTER 9 ACCESSING AND CONFIGURING THE BUSINESS MODEM REMOTELY ...
Страница 96: ...11 6 CHAPTER 11 FLOW CONTROL ...
Страница 108: ...12 12 CHAPTER 12 HANDSHAKING ERROR CONTROL DATA COMPRESSION AND THROUGHPUT ...
Страница 112: ...13 4 CHAPTER 13 DISPLAYING QUERYING AND HELP SCREENS ...
Страница 124: ...14 12 CHAPTER 14 TESTING THE CONNECTION ...
Страница 132: ...15 8 CHAPTER 15 TROUBLESHOOTING ...
Страница 162: ...B 14 APPENDIX B ALPHABETIC COMMAND SUMMARY ...
Страница 168: ...C 6 APPENDIX C FLOW CONTROL TEMPLATE ...
Страница 210: ...14 GLOSSARY ...