Note 4: You may find it necessary or helpful to include W2 in your initialization string or dialing prefix. This enables responses that include the mo-
Note 5: Some software allows these commands to be added to the list of dial prefixes or the initiali- zation string.
Note 6: When the protocol is forced, the modem will not attempt to connect at other protocols if it can- not connect at the forced protocol. It will try to connect at the fastest speed available within the forced protocol.
There are other configurations that can be forced as well. If you need to select a particular configuration, use the AT command strings shown next.
You can always return to the modem’s default configuration by typing AT &F and pressing the Enter key. If you do, the modem does not re- ceive the commands in your software’s initiali- zation string, as it normally would. Using the ATZ command overcomes this problem if you have saved all of your setup parameters in nonvolatile memory. (To save setup parameters in nonvolatile memory in AT terminal mode: Type AT, followed by the parameter settings you choose, followed by &W, and press Enter. For example, if you type AT &C1 &D2 &W and press Enter, the &C1 and &D2 parameter set- tings are stored in Profile 0.)
To force... | Type these commands and press | ||
| Enter |
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| Lucent |
| Rockwell |
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MNP5/MNP4 operation | AT \N2 |
| AT \N5 |
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MNP4 only | AT \N2 %C0 |
| AT \N5 %C0 |
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LAPM only |
| AT \N4 | |
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Continued on next page
Chapter 3 Solving Common Problems | 23 |
