
Appendix B – Detailed Examples
Multi-Tech Systems, Inc. AT Commands for Wireless Modems with IP Connectivity (S000333D) 72
Sending a Pre-Defined Email Combination Continued
Process diagram
AT#SENDMAIL1(CR)
OK
SMTP server
address solved ?
SMTP
login required?
SMTP server
responding?
Authentication
successfull?
Y
N
Y
N
Y
N
Y
N
N
Y
N
Resolution made on
primary DNS server?
Resolution made on
secondary DNS server?
#CME ERROR: 38027
Y
#CME ERROR <value>
NO CARRIER
If network
disconnection
during data mode
Note
The data into the email sent will not be echoed back, the software transparently switches from
command to data mode then back to command mode
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