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Appendix B – Detailed Examples

Multi-Tech Systems, Inc. AT Commands for Wireless Modems with IP Connectivity (S000333B) 65

Sending an Email Containing Data from the Serial

Port

This example covers the following: Sending an email message containing data from the serial port.

Description: This command allows another processor (attached equipment) to send an email message containing

body text which is passed directly to the modem over the serial port. While the modem is connected to

the Internet, the attached equipment can initiate the sending of an email message at any time (except

when the software is already in the process of sending or retrieving email, FTP or socket TCP process).

This action is accomplished by sending an 'AT#PUTMAIL' command over the serial port.

Sending an email

through the serial

port

The modem will send an 'Ok_Info_WaitingForData' message when it is ready to accept the data

flow to be placed in the body of the email from the serial port.

The data sent by the host over the serial port is not echoed.

Note:

When using this command, the software will use the following parameters to compose the email

header:

'SUBJ1' for the email subject

'REC1' for the recipient email address

'CCREC1' for the carbon Copy recipient -mail address

‘SENDERNAME’ & ‘SENDERADDR’ for the specified identity of the module

AT# Command: AT#PUTMAIL

The end of the email body data flow must be denoted by sending following sequence to the

module:

[CR][LF].[CR][LF]

The software will send an ‘OK’ response when it is ready to accept another command, in

case of success of the sending operation. In case of problem a ‘#CME ERROR: Value’ is

sent over the serial port.

Notes:

• The [CR][LF].[CR][LF] keyboard sequence is:

ENTER

CTRL+ENTER

ENTER

CTRL+ENTER

• If there is no answer from the SMTP server after 3 minutes, the error #CME ERROR: 37964 is

generated and the sending process is aborted.

• A communication session must be established (AT#CONNECTIONSTART) before sending the

AT#PUTMAIL command. After the sending process, the communication session remains

established.

• Check your terminal emulator configuration because with some configurations, this terminal can

modify data (for example, to transform the [CR] in [CR][LF]).

Configuration:

SMTP server Address of the SMTP server used for sending email.

AT#SMTPSERV

SMTP port Port of the SMTP server used to send email.

AT#SMTPPORT

SMTP user name SMTP user name used by some SMTP servers for authentication.

AT#SMTPUN

SMTP user

password

SMTP user password used by some SMTP servers for authentication.

AT#SMTPPW

Domain Domain name of the sender.

AT#DOMAIN

Sender name The sender’s name, which appears in the email header, in the field: 'From:'

AT#SENDERNAME

Sender email

address

Email address of the sender, which appears in the email header, in the field ' From:'

AT#SENDERADDR

Recipient email

address

Email address of the recipient, which appears in the email header, in the field ' To:'

AT#REC1

CC Recipient

email address

Carbon Copy email address of the recipient for sending email which appears in the email header, in

the field ' Cc:'

AT#CCREC1

Email subject Pre-defined email subject, which appears in the email header, in the field ' Subject:'

AT#SUBJ1

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