Multi-Tech Systems MT2834BA Series, MT2834BL Series manual Reading and Assigning S-Register Values

Chapter 6 - S-Registers

6.2Reading and Assigning S-Register Values

The S command is used to assign a value to, and to read the current value of, an S-Register. To read an S-Register value, enter the letter S followed by the S-register number and a question mark (?), then hit RETURN. For example, entering ATS7? and hitting RETURN displays the value of S- Register S7 in a 3-digit decimal form. The number 8 would appear as 008, the number 30 would appear as 030, and the number 255 would appear as 255.

To assign a value to an S-Register, enter the letter S followed by the S-Register number and an equals sign (=), and then a decimal response to the message “ENTER THE NEW VALUE IN DECIMAL FORMAT”. Convert all ASCII characters to their decimal equivalents before entering them. S-Register decimal values range from 0-127 for ASCII characters, or 0-255 for numeric values.

6.2.1Examples of Assigning Values

1.Let’s say you wish to have longer pauses caused by the comma in a dial command; five seconds instead of two. Entering ATS8=5 assigns 5 as the value for S-Register S8 (meaning the modem pauses five seconds for a comma in a dial command).

2.In a second example, let’s say that you wish to configure the modem to answer incoming calls after the 30th ring instead of after the first ring. To configure S-Register S0 with a value of 30, enter ATS0=30 and hit RETURN.

3.In a third example, let’s say you are calling long distance to another country code, and it is taking a long time to connect. The S-Register S7 (Abort Timer) setting of 45 seconds, is insufficient. The abort timer times out and cancels the call before a connection is made. To change the S7 value to 55 seconds, enter Command mode, then enter ATS7=55 and hit RETURN. Now, after dialing, the modem allows 10 more seconds for a carrier signal before aborting the call. The additional 10 seconds should provide enough time for international calls.

6.2.2Examples of Reading Values

To verify that you entered the value correctly in the above examples, enter ATS8? and hit RETURN in the first example, ATS0? in the second, and ATS2? in the third example. You should receive the response 005 in the first example, 030 in the second example, and 055 in the third example.

When configuring the S-Registers, it is a good practice to include the verification read-entry in the same command line as the configuration assignment-entry. In the three preceding examples, enter ATS8=5S8?, ATS0=30S3?, and ATS7=55S7?.

Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 66