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AT Commands

AT command formats

1Modem negotiates V.44 compression for transmit only.

2Modem negotiates V.44 compression for receive only.

3Modem accepts V.44 compression in both or either direction (default).

Result Codes:

OK

<direction> = 0,1,2,3

ERROR Otherwise

+DS44?

This command displays the current V.44 compression configuration.

+DS44=?

This command displays the supported +DS44 <direction> parameter values.

+MS Command

This command can be used to set protocol and connection speed parameters for the modem. Instead of having to change multiple S registers, this single command produces the same effect. The command can also be used to display the current modem protocol and maximum connection speed settings. In addition, it can be used to display all the supported +MS command parameter values.

+MS= <carrier>, <automode>, <min_rate>, <max_rate>,