Hayes Modem AT Command Protocol

Appendix N

 

 

 

Connections

The connections when using the Hayes Modem AT Command Protocol is shown below.

RS-232C Connection

Modem

Telephone line

Modem

 

Modem: D-sub

CQM1H D-sub 9 pin

25 pin (female)

(female)

Compatible Modems

Although most of the sequences in this protocol can be used regardless of modem, the sequences Initialize Mo- dem (specialized) and Dial sequences can be used only for the following Modems:

MD24FB10V (OMRON Modem)

MD144FB5V (OMRON Intelligent Modem)

ME1414VB2/B2 (OMRON FAX/DATA Modem)

For other modems, create a modem initialization sequence using the general-purpose Initialize Modem sequence and dial using the Data Send/Receive sequence (Sequence No. 553).

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Omron CQM1H-SCB41 operation manual Connections, Compatible Modems