Multitech SocketWireless MT800SWM User manual

SocketWireless®Wi-Fi®
MT800SWM
&
MultiConnect®WF
MTS2WFA
AT Commands
Reference Guide

Copyright and Technical Support
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 2
AT Commands for the following products:
SocketWireless Wi-Fi (MT800SWM)
MultiConnect WF, a Serial-to-Wi-Fi Device Server (MTS2WFA)
Document Product Number S000425D, Revision D
Copyright
This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-
Tech Systems, Inc. All rights reserved. Copyright © 2006-8, by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and specifically
disclaim any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Multi-Tech
Systems, Inc. reserves the right to revise this publication and to make changes from time to time in the content hereof
without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.
Revisions
Revision Level Date Description
A02/13/07 Initial release.
B 05/15/07 Updated the Technical Support contact list. Changed the A\ command to A/.
06/29/07 Removed a duplicate Reset command.
08/22/07 Updated for firmware 1.2x
Added #WEP?, #WEPKEYID, #WLANPOWERSAVE, #WLANDOZE,
#WLANACTIVATE, #WLANROAM, #WLANASSOCINFO, #TCPAUTOLISTEN,
#UART?, #BOOTMSG commands.
C11/09/07 Added the MultiConnect WF, a Serial-to-Wi-Fi Device Server, as a product that
uses these commands.
D 01/11/08 Added that the #SMTPPUTMAIL command will request the message body to
be entered. Added a space before the -B in the command #SMTPPUTMAIL -B
Trademarks
SocketWireless, Multi-Tech, and the Multi-Tech logo are registered trademarks of Multi-Tech Systems, Inc.
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]
Internet Address: http://www.multitech.com
Technical Support
Country By Email By Phone
Europe, Middle East, Africa [email protected] +(44) 118 959 7774
U.S., Canada, all others [e-mail] 800-972-2439 or 763-717-5863

Table of Contents
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 3
Contents
Chapter 1 – IP Commands...........................................................................................................................................6
#IPDEFGW – Default Gateway...............................................................................................................................6
#IPDHCP – DHCP Client........................................................................................................................................6
#IPADDR – Static IP Address.................................................................................................................................6
#IPNETMASK – Subnet Mask ................................................................................................................................6
#IPDNSSERV1 – DNS Server 1.............................................................................................................................6
#IPDNSSERV2 – DNS Server 2.............................................................................................................................7
#IPRELEASE – Release a DHCP Address Assigned by the Server.......................................................................7
#IPRENEW – Renew the DHCP Information from the Server.................................................................................7
#IP? – IP Module ....................................................................................................................................................7
#IPDNSSERV – Configure the DNS Server............................................................................................................7
#IPQUERY – Give a Domain Name........................................................................................................................7
#IPRESOLV – To Observe Whether There Is a Connection with DNS or Not........................................................8
#IPDNSTABLE – Display DNS Table .....................................................................................................................8
Chapter 2 – PING Commands .....................................................................................................................................9
#PINGNUM – Number of PING Requests...............................................................................................................9
#PINGREMOTE – IP Address of Remote Device...................................................................................................9
#PINGSTART – PING.............................................................................................................................................9
#PING? – PING Module..........................................................................................................................................9
Chapter 3 – WLAN Commands .................................................................................................................................10
#WLANSECURITYMODE – Security Mode of WLAN Module..............................................................................10
#WEP64KEY – Keys for WEP64 Security Mode...................................................................................................10
#WEP128KEY – Keys for WEP128 Security Mode...............................................................................................10
#WEPKEYID – Set the Default TX Key Index.......................................................................................................10
#WLANNETWORKMODE – WLAN Network Mode ..............................................................................................10
#WLANCOUNTRYCODE – Country Code............................................................................................................11
#WLANSCANMODE – Scanning Mode................................................................................................................11
#WLANTXPOWER – Maximum Transmit Output Power for the WLAN Module...................................................11
#WLANSSID – SSID of WLAN..............................................................................................................................11
#WLANDATARATE – WLAN Transmission Data Rate.........................................................................................11
#WLANIBSSCHANNEL – Channel for Ad-Hoc Mode...........................................................................................12
#WLAN? – WLAN Module.....................................................................................................................................12
#WLANSETTXPOWER – Transmit Power............................................................................................................12
#WLANCONNECT – Connect with AP .................................................................................................................12
#WLANDISCONNECT – Disconnect with AP.......................................................................................................12
#WLANENABLE – Auto Connect Module with AP................................................................................................12
#WLANGETRSSI – Received Signal Strength......................................................................................................13
#WEP? – See the Value of WEP Keys.................................................................................................................13
#WLANPOWERSAVE – Enable Power Save at Boot...........................................................................................13
#WLANDOZE – Move Module into Power Save...................................................................................................13
#WLANACTIVATE – Move Module out Power Save ............................................................................................13
#WLANROAM – Enable/Disable Roaming............................................................................................................13
#WLANASSOCINFO – Display Association Information.......................................................................................14

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Chapter 4 – SMTP Commands..................................................................................................................................15
#SMTPSENDERNAME – Give Sender Name ......................................................................................................15
#SMTPSENDERADDR – Give Sender Address...................................................................................................15
#SMTPCCRECi – Give the CC Address...............................................................................................................15
#SMTPDOMAIN – Domain Name of the Sender ..................................................................................................15
#SMTPRECiADD – Address of the Recipient.......................................................................................................16
#SMTPSUBJi – Subject of Email ..........................................................................................................................16
#SMTPBODYi – Mail Body ...................................................................................................................................16
#SMTPPORT – Port of the SMTP Server.............................................................................................................16
#SMTPPW – SMTP Account Password................................................................................................................17
#SMTPSERV – SMTP Server Address.................................................................................................................17
#SMTPUN – SMTP User Name............................................................................................................................17
#SMTPSENDMAIL – Send Mail through Interactive Mode ...................................................................................17
#SMTPSENDMAILi – Send Mail without Interactive Mode ...................................................................................18
#SMTPPUTMAIL – Send Mail to Recipient 1 and CC 1........................................................................................18
#SMTPPUTMAIL -B – Send Mail to Recipient 1 and CC 1 with Interactive Mode ................................................18
#SMTPVERBOSE – Verbose Mode .....................................................................................................................19
#SMTP? – SMTP Module .....................................................................................................................................19
Chapter 5 – TCP Commands.....................................................................................................................................20
#TCPDLEMODE – Coding the ETX Character.....................................................................................................20
#TCPPORT – Port of Remote Peer Used for TCP Session..................................................................................20
#TCPSERV – Address of the Remote TCP Server...............................................................................................20
#TCPTXDELAY – Time Delay Before Sending a TCP Frame ..............................................................................20
#TCPLISTEN – Open a Listening TCP Connection..............................................................................................21
#TCPSTOP – Close TCP Listening Mode ............................................................................................................21
#TCPOPEN – Open a TCP Connection................................................................................................................21
#TCP? – TCP Module Configuration.....................................................................................................................21
#TCPAUTOCONNECT – Auto Connect to TCP Server........................................................................................22
#UDPPORT – UDP Port Number..........................................................................................................................22
#UDPSERV – UDP Server Address .....................................................................................................................22
#UDPTXDELAY – Delay before Sending UDP Datagram ....................................................................................22
#UDPSTART – Initiate the UDP Session in Listen Mode......................................................................................22
#UDPSTOP – Close the UDP Listening Mode......................................................................................................23
#UDPOPEN – Initiate UDP Session in Active Mode.............................................................................................23
#UDP? – UDP Module..........................................................................................................................................23
#CONTERMINATE – Termination of TCP/UDP Connection.................................................................................23
#TCPLISTENLIST – List the Listening TCP Ports ................................................................................................23
#TCPAUTOLISTEN – Enable/Disable Auto Listen ...............................................................................................24
Chapter 6 – POP3 Commands...................................................................................................................................25
#POP3HEADERMODE – POP3 Header ..............................................................................................................25
#POP3PORT – Port of the POP3 Server..............................................................................................................25
#POP3PW – Password of the POP3 Account.......................................................................................................25
#POP3SERV – Address of the POP3 Server........................................................................................................25
#POP3UN – User Name of the POP3 Account.....................................................................................................26
#POP3RECVMAILLIST – List of Emails in Inbox..................................................................................................26
#POP3RECVMAILHEAD – Header Information of the Mail..................................................................................26

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#POP3RECVMAIL – Receive Mail........................................................................................................................26
#POP3DELMAIL – Delete Mail from Inbox ...........................................................................................................26
#POP3? – POP3 Module......................................................................................................................................27
#POP3UNIQUEIDLIST – Receive Unique Email ID of the Message....................................................................27
#POP3GETMAIL or #POP3RECVMAIL – Receive All Emails..............................................................................27
#POP3RECVTOP – Receive Top Lines of an Email.............................................................................................27
#POP3VERBOSE – Verbose Mode......................................................................................................................27
Chapter 7 – FTP Commands .....................................................................................................................................28
#FTPPORT – Port of the FTP Server ...................................................................................................................28
#FTPMODE – FTP Mode......................................................................................................................................28
#FTPTYPE – Type of FTP Session ......................................................................................................................28
#FTPSERV – FTP Server Address.......................................................................................................................28
#FTPUN – User Name of the FTP Server.............................................................................................................29
#FTPPW – Password of the FTP Server ..............................................................................................................29
#FTPGETFILENAME – Name of the Downloadable File from the FTP Server.....................................................29
#FTPPUTFILENAME – Name of the Uploadable File to the FTP Server..............................................................29
#FTPDIR – Path of Files to Upload and Download...............................................................................................29
#FTPFILESIZE – Size of the File to Upload to the FTP Server.............................................................................30
#FTPGET – Download Files from the FTP Server................................................................................................30
#FTPPUT – Upload Files to the FTP Server.........................................................................................................30
#FTPCSTART – FTP Interactive Mode.................................................................................................................31
#FTPVERBOSE – Verbose Mode.........................................................................................................................31
#FTP? – FTP Module............................................................................................................................................31
Chapter 8 – UART Commands..................................................................................................................................32
#UARTBAUDRATE – Set UART Baud Rate.........................................................................................................32
#UARTDATABITS – Set Number of Data Bits......................................................................................................32
#UARTPARITY – Set Parity Type.........................................................................................................................32
#UARTSTOPBITS – Set Number of Stop Bits......................................................................................................32
#UARTFLOWCONTROL – Set Flow Control Type...............................................................................................32
#UART? – UART Configurations ..........................................................................................................................33
Chapter 9 – Miscellaneous Commands....................................................................................................................34
#VVERSION – Software Version..........................................................................................................................34
#VSTATE – Display the Current Status of the Device ..........................................................................................34
#VALL – Display All AT Parameters .....................................................................................................................34
&F – Restore Default Factory Settings..................................................................................................................34
A/ – Previous Command.......................................................................................................................................34
#RESET – Restart the Module..............................................................................................................................35
E – Turn Echo ON/OFF ........................................................................................................................................35
S2 – Escape Sequence ........................................................................................................................................35
#WATCHDOG – Enable/Disable Watchdog..........................................................................................................35
#WATCHDOGTIMER – Watchdog Timer .............................................................................................................35
#BOOTMSG – Enable/Disable Boot Message......................................................................................................35
Index............................................................................................................................................................................36

Chapter 1 – IP Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 6
Chapter 1 – IP Commands
#IPDEFGW – Default Gateway
Description: Sets the default gateway address. The view command shows whether the address is
statically configured or obtained from the DHCP server.
Syntax: Set Value: AT#IPDEFGW=<value>
View Value: AT#IPDEFGW?
Values:IP address in dotted decimal notation (xxx.xxx.xxx.xxx)
Default Value:192.168.1.1
#IPDHCP – DHCP Client
Description: Enables or disables DHCP client. If DHCP client is enabled, the module will take the IP
address from the DHCP server. If DHCP client is disabled, the module will take the static
IP address configured for the module. The view command shows whether the address is
statically configured or obtained from the DHCP server.
Syntax: Set Value: AT#IPDHCP=<value>
View Value: AT#IPDHCP?
Values:1: enable
0: disable
Default Value:0: disable
#IPADDR – Static IP Address
Description: Sets the local static IP address. The view command shows whether the address is
statically configured or obtained from the DHCP server.
Syntax: Set Value: AT#IPADDR=<value>
View Value: AT#IPADDR?
Values:IP address in dotted decimal notation (xxx.xxx.xxx.xxx)
255 is Maximum Value in an Octate
Default Value:192.168.1.100
#IPNETMASK – Subnet Mask
Description: Sets the subnet mask.
Syntax: Set Value: AT#IPNETMASK=<value>
View Value: AT#IPNETMASK?
Values:IP address in dotted decimal notation (xxx.xxx.xxx.xxx)
255 is maximum value in an Octate
Default Value:255.255.255.0
#IPDNSSERV1 – DNS Server 1
Description: In order to translate the server names from literal format into IP addresses, the TCP/IP
stack software implements the Domain Name System (DNS) protocol. The DNS Server
IP address must be specified for use by the TCP/IP stack software.
Syntax: Set Value: AT#IPDNSSERV1=<value>
View Value: AT#IPDNSSERV1?
Values:32-bit number in dotted-decimal notation (i.e., xxx.xxx.xxx.xxx)
Default Value:202.56.215.6

Chapter 1 – IP Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 7
#IPDNSSERV2 – DNS Server 2
Description: In order to translate the server names from literal format into IP addresses, the TCP/IP
stack software implements the Domain Name System (DNS) protocol. The DNS Server
IP address must be specified for use by the TCP/IP stack software. This secondary DNS
server is used in the case where the primary DNS server does not respond to a request.
Syntax: Set Value: AT#IPDNSSERV2=<value>
View Value: AT#IPDNSSERV2?
Values:32-bit number in dotted-decimal notation (i.e., xxx.xxx.xxx.xxx)
Default Value:202.56.230.6
#IPRELEASE – Release a DHCP Address Assigned by the
Server
Description: In order to gracefully release a DHCP address assigned by the server, the module should
issue a command of IPRELEASE.
Syntax: Set Value: AT#IPRELEASE
#IPRENEW – Renew the DHCP Information from the Server
Description: The DHCP client can renew the DHCP information from the server. On completion of
lease time, the DHCP client will automatically renew the DHCP information. Before that, if
the client wants to renew the information, it can use this command.
Syntax: Set: AT#IPRENEW
#IP? – IP Module
Description: Displays all IP module values/parameters.
Syntax: View Values: AT#IP?
Values:IP Address
Subnet mask
Default Gateway
DHCP (Enable/Disable)
Primary DNS IP address
Secondary DNS IP address
Default Value:None
#IPDNSSERV – Configure the DNS Server
Description: Enables DNS. By default, DNS is enabled. Use this command before using DNS
services.
Syntax: Set: AT#IPDNSSERV
#IPQUERY – Give a Domain Name
Description: Sends a query to the DNS server to resolve the name.
Syntax: Set Value: AT#IPQUERY=<Host Name>
Values:Host name in alpha-numeric string format.
Default Value:None

Chapter 1 – IP Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 8
#IPRESOLV – To Observe Whether There Is a Connection
with DNS or Not
Description: If the DNS client is successful in resolving the name, this command shows the IP address
of the resolved host name. If the DNS client fails to resolve, it shows error message.
Syntax: AT#IPRESOLV=<Host Name>
Values:Host name in alpha-numeric string format.
Default Value:None
#IPDNSTABLE – Display DNS Table
Description: This command displays the DNS table.
Syntax: AT#IPDNSTABLE
Values:None

Chapter 2 – PING Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 9
Chapter 2 – PING Commands
#PINGNUM – Number of PING Requests
Description: This command sets the number of PING echo requests to issue to PINGREMOTE.
Syntax: Set Value: AT#PINGNUM=<Value>
View Value: AT#PINGNUM?
Values:From 1 to 255 inclusive
Default Value:20
#PINGREMOTE – IP Address of Remote Device
Description: This command sets the IP address of remote device to PING.
Syntax: Set Value: AT#PINGREMOTE=<IP Address>
View Value: AT#PINGREMOTE?
Values:32-bit number in dotted-decimal notation (i.e., xxx.xxx.xxx.xxx)
Default Value:192.168.1.1
#PINGSTART – PING
Description: Directs the module to start PING requests to the configured PING remote address. The
number of requests to be sent is obtained from the PINGNUM command.
Syntax: Set Value: AT#PINGSTART
Values:PINGNUM
PINGREMOTE
Default Value:None
#PING? – PING Module
Description: Displays PING module related information.
Syntax: AT#PING?
Values:PINGNUM
PINGREMOTE
Default Value:None

Chapter 3 – WLAN Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 10
Chapter 3 – WLAN Commands
#WLANSECURITYMODE – Security Mode of WLAN Module
Description: Sets the Wireless LAN security mode.
Syntax: Set Value: AT#WLANSECURITYMODE =<value>
View Value: AT#WLANSECURITYMODE?
Values:0: Security Disable
1: WEP64 Security
2: WEP128 Security
Default Value:0: Security Disable
#WEP64KEY – Keys for WEP64 Security Mode
Description: Sets keys for WEP64 Security mode.
Syntax: Set Value: AT#WEP64KEYn =<value>, where "n" can be 1 to 4
View Value: AT#NWEP64KEYn?
Values:ASCII text string of 10 hexadecimal characters
e.g., 1234567890
Default Value:6162636465
#WEP128KEY – Keys for WEP128 Security Mode
Description: Sets keys for WEP64 Security mode.
Syntax: Set Value: AT#WEP128KEYn =<value>, where "n" can be 1 to 4
View Value: AT#WEP128KEYn?
Values:ASCII text string of 26 hexadecimal characters
e.g., 12345678901234567890123456
Default Value:"12345678901234567890123456"
#WEPKEYID – Set the Default TX Key Index
Description: Sets the default Transmission Key used for data encryption in WEP.
Syntax: Set Value: AT#WEP128KEY=<value>
Values:Any value from 1 to 4
Default Value:1
#WLANNETWORKMODE – WLAN Network Mode
Description: Sets Wireless LAN Network mode.
Syntax: Set Value: AT#WLANNETWORKMODE =<value>
View Value: AT#WLANNETWORKMODE?
Values:0: Infrastructure mode
1: Ad – Hoc mode
Default Value:0: Infrastructure mode

Chapter 3 – WLAN Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 11
#WLANCOUNTRYCODE – Country Code
Description: Sets country code. Different countries have different restrictions on Wireless LAN
parameters like operating channels and transmit power. To make it operable, the country
code can be set by using this AT command.
Syntax: Set Value: AT#WLANCOUNTRYCODE =<value>
View Value: AT#WLANCOUNTRYCODE?
Values:DOMAIN_FCC (For US)
DOMAIN_IC (For Canada)
DOMAIN_ETSI (For Europe)
DOMAIN_SPAIN (For Spain)
DOMAIN_FRANCE (For France)
DOMAIN_MKK (For Japan)
Default Value:DOMAIN_FCC (For US)
#WLANSCANMODE – Scanning Mode
Description: Sets scanning mode. The module can work in both active scanning and passive scanning
modes. In active scanning, the module actively sends a probe request to associate with
the AP, and in passive scanning, the module waits for a beacon from the AP and then it
associates.
Syntax: Set Value: AT#WLANSCANMODE =<value>
View Value: AT#WLANSCANMODE?
Values:0: Active scanning
1: Passive scanning
Default Value:0: Active scanning
#WLANTXPOWER – Maximum Transmit Output Power for
the WLAN Module
Description: Sets the maximum transmit output power for WLAN module while communicating.
Syntax: Set Value: AT# WLANTXPOWER =<value>
View Value: AT# WLANTXPOWER?
Values:Only integer values. Range is 0 dBm to 16 dBm
Default Value:15
#WLANSSID – SSID of WLAN
Description: Sets the WLAN network SSID.
Syntax: Set Value: AT#WLANSSID =<value>
View Value: AT#WLANSSID?
Values:Alphanumeric ASCII Text String of up to 32 characters. It will take a blank space also.
Default Value:mt800swm
#WLANDATARATE – WLAN Transmission Data Rate
Description: Sets the WLAN transmission data rate.
Syntax: Set Value: AT#WLANDATARATE=<value>
View Value: AT#WLANDATARATE?
Values:1, 2, 5.5, 11 (in Mbps)
Default Value:11 (in Mbps)

Chapter 3 – WLAN Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 12
#WLANIBSSCHANNEL – Channel for Ad-Hoc Mode
Description: Sets channel for Ad-Hoc mode.
Syntax: Set Value: AT#WLANIBSSCHANNEL=<value>
View Value: AT#WLANIBSSCHANNEL?
Values:1 – 14
Default Value:9
#WLAN? – WLAN Module
Description: Displays WLAN module-related information.
Syntax: View Values: AT#WLAN?
Values:SECURITYMODE SSID
NETWORKMODE IBSSCHANNEL
COUNTRYCODE DATARATE
SCANMODE WLANENABLE
TXPOWER(dBm) MACADDR
Default Value:None
#WLANSETTXPOWER – Transmit Power
Description: Sets transmit power of the WLAN radio.
Syntax: Set Value: AT#WLANSETTXPOWER=<value in dBm>
Values:Any value from 0 to 16 dBm
Default Value:15 dBm
#WLANCONNECT – Connect with AP
Description: Connects the module with AP.
Syntax: Set Value: AT#WLANCONNECT
Values:None
#WLANDISCONNECT – Disconnect with AP
Description: Disconnects the module with AP.
Syntax: Set Value: AT#WLANDISCONNECT
Values:None
#WLANENABLE – Auto Connect Module with AP
Description: On power up, this parameter determines whether to connect to the AP automatically or
manually. Connection to the AP can be established by AT#WLANCONNECT command.
A value of 0 means the module will not connect to AP automatically. A value of 1 means
that on power up the module tries to connect to the AP for configured settings.
Syntax: Set Value: AT#WLANENABLE=<value>
View Value: AT#WLANENABLE?
Values:0: Manual connection to the AP
1: Automatic connection to the AP
Default Value: 0

Chapter 3 – WLAN Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 13
#WLANGETRSSI – Received Signal Strength
Description: This command displays the current received signal strength.
Syntax: Set Value: AT#WLANGETRSSI
Values:NA
#WEP? – See the Value of WEP Keys
Description: This command displays the values of the WEP keys.
Syntax: Set Value: AT#WEP?
Values:WEP64KEY1:6162636465
WEP64KEY2:6162636465
WEP64KEY3:6162636465
WEP64KEY4:6162636465
WEP128KEY1:12345678901234567890123456
WEP128KEY2:12345678901234567890123456
WEP128KEY3:12345678901234567890123456
WEP128KEY4:12345678901234567890123456
#WLANPOWERSAVE – Enable Power Save at Boot
Description: This command sets the Power Save at the Boot Works after the Power Cycle.
Syntax: Set Value: AT#WLANPOWERSAVE=<value>
Values:0 Power Save Disabled
1 Power Save Enabled
Default: 0
#WLANDOZE – Move Module into Power Save
Description: This command moves the module into Power Save during an active connection.
Syntax: Set Value: AT#WLANDOZE
Values:NA
#WLANACTIVATE – Move Module out Power Save
Description: This command moves the module out of Power Save during an active connection.
Syntax: Set Value: AT#WLANACTIVATE
Values:NA
#WLANROAM – Enable/Disable Roaming
Description: This command enables/disables automatic roaming of the module when the wireless
connection is lost by the Access Point.
Syntax: Set Value: AT#WLANROAM
Values:0 Disable Auto Roam
1 Enable Auto Roam
Default: 1

Chapter 3 – WLAN Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 14
#WLANASSOCINFO – Display Association Information
Description: This command displays the channel and BSSID if the current association.
Syntax: Set Value: AT#WLANASSOCINFO
Values:NA

Chapter 4 – SMTP Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 15
Chapter 4 – SMTP Commands
#SMTPSENDERNAME – Give Sender Name
Description: The sender’s literal name (different from the SENDERADDR /parameter, which is the
sender’s email address). The parameter will appear in the header of the email sent by the
TCP/IP stack software in the field: “From:”
Syntax: Set Value: AT#SMTPSENDERNAME=<value>
View Value: AT#SMTPSENDERNAME?
Values:Alphanumeric ASCII text string up to 120 characters. The address must be provided in
literal format (for instance, “machine 245”). It will take a blank space also.
Default Value:None
#SMTPSENDERADDR – Give Sender Address
Description: To send emails, the TCP/IP stack software must know the email address of the sender.
The “sender” is the email identification of the hardware platform itself or the optional
attached equipment. This email address will appear in the header of the email sent by the
TCP/IP stack software in the field “From:”
Syntax: Set Value: AT#SMTPSENDERADDR=<value>
View Value: AT#SMTPSENDERADDR?
Values:Alphanumeric ASCII text string up to 120 characters. The address must be provided in
literal format (for instance [e-mail]). It will take a blank space also.
Default Value:None
#SMTPCCRECi – Give the CC Address
Description: The software can send email messages to an additional recipient as a "carbon copy".
The value/parameter contains the email address of the additional recipient. This email
address will appear in the header of the email sent by the TCP/IP stack software in the
field “Cc:”
For a given value n, the CCRECn value/parameter is directly associated with the RECn
parameter.
Syntax: Set Value: AT#SMTPCCRECi=<value> (replace i with 1, 2, or 3)
View Value: AT#SMTPCCRECi? (replace i with 1, 2, or 3)
Values:Alphanumeric ASCII text string up to 120 characters. The address must be provided in
literal format (for instance [email protected]). It will take a blank space also.
Default Value:None
#SMTPDOMAIN – Domain Name of the Sender
Description: When sending an email message, the TCP/IP stack software must provide the SMTP
server with the domain
name of the sender. In some cases, this domain name may be different from the domain
name included in the sender's email address.
Syntax: Set Value: AT#SMTPDOMAIN=<value>
View Value: AT#SMTPDOMAIN?
Values:Alphanumeric ASCII text string up to 120 characters. It will take a blank space also.
Default Value:None

Chapter 4 – SMTP Commands
Multi-Tech Systems, Inc. AT Commands for the MT800SWM & MTS2WFA (S000425D) 16
#SMTPRECiADD – Address of the Recipient
Description: To send email messages, the TCP/IP stack software must know the e-mail address of the
recipient. This email address will appear in the email header sent by the TCP/IP stack
software, in the field 'To:' The RECi value/parameter will hold one e-mail address which
can be maximum 120 characters.
Syntax: Set Value: AT#SMTPRECiADD=<Value> (replace i with 1, 2, or 3)
View Value: AT#SMTPRECiADD? (replace i with 1, 2, or 3)
Values:RECi (i = 1, 2, or 3)
Alphanumeric ASCII text string up to 120 characters. The address must be provided in
literal format (for instance [e-mail]). It will take a blank space also.
Default Value:None
#SMTPSUBJi – Subject of Email
Description: These values/parameters contain the pre-defined subject text that will be used by the
TCP/IP stack to compose the email header.
Syntax: Set Value: AT#SMTPSUBJi=<value> (replace i with 1, 2, or 3)
View Value: AT#SMTPSUBJi? (replace i with 1, 2, or 3)
Values:Alphanumeric ASCII text string up to 120 characters. It will take a blank space also.
Default Value:None
#SMTPBODYi – Mail Body
Description: These values/parameters store pre-defined message bodies. They allow the host
application to send predefined email combinations.
Syntax: Set Value: AT#SMTPBODYi=<value> (replace i with 1, 2, or 3). Then type message
body. After completing, give the command CTRL+D. This opens AT mode.
View Value: AT#SMTPBODYi? (replace i with 1, 2, or 3)
Values:The body content has to be entered after the AT#BODY1<CR> command. It has to be an
alphanumeric ASCII text string up to 120 characters followed this character: 1A (in ASCII
code) and generated on a keyboard by CTRL+D. It will take a blank space also.
Default Value:None
#SMTPPORT – Port of the SMTP Server
Description: To reach the SMTP server, the TCP/IP stack software must know the port of the SMTP
server used for sending email. The value/parameter should be changed only by your
network administrator since it depends on the network infrastructure configuration
including firewalls, proxy or specific TCP port translation settings.
Syntax: Set Value: AT#SMTPPORT=<value>
View Value: AT#SMTPPORT?
Values:A number between 0 and 65535. A value of zero is not allowed.
Default Value:25

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#SMTPPW – SMTP Account Password
Description: To send email messages, some SMTP servers are using an authentication process. In
these cases, the TCP/IP stack software will provide the SMTP password (associated to
the SMTP user name) for the email sending process. If this value/parameter is an empty
string, the authentication mode is inactive. If both this parameter and the SMTPUN
parameter are not empty, the authentication mode is active.
Syntax: Set Value: AT#SMTPPW=<value>
View Value: AT#SMTPPW?
Values:Alphanumeric ASCII text string up to 120 characters. It will take a blank space also.
Default Value:None
#SMTPSERV – SMTP Server Address
Description: To send email messages the TCP/IP stack software must know the address of the SMTP
server that is to be used. In most cases, the local ISP maintains the SMTP server.
Syntax: Set Value: AT#SMTPSERV=<value>
View Value: AT#SMTPSERV?
Values:32-bit number in dotted-decimal notation (i.e., xxx.xxx.xxx.xxx) or Alphanumeric ASCII
text string up to 120 characters if DNS is available. It will take a blank space also.
Default Value:None
#SMTPUN – SMTP User Name
Description: To send email messages, some SMTP servers use an authentication process. In these
cases, the TCP/IP stack software will provide the SMTP user name (associated with a
SMTP password) for the email sending process. If this value/parameter is an empty
string, the authentication mode is inactive. If both this parameter and the SMTPPW
parameter are not empty, the authentication mode is active.
Syntax: Set Value: AT#SMTPUN=<value>
View Value: AT#SMTPUN?
Values:Alphanumeric ASCII text string up to 120 characters. It will take a blank space also.
Default Value:None
#SMTPSENDMAIL – Send Mail through Interactive Mode
Description: This command allows the attached host to direct the TCP/IP stack to retrieve the first mail
present in the POP3 server list. Once an IP link is established, the attached host can
retrieve an email message at any time (except when the TCP/IP stack software is already
in a process using TCP resources). This command is similar to a “check email box”
feature issued by a standard messaging client on a PC.
Syntax: Set Value: AT#SMTPSENDMAIL
Values:Sending address
Receiving address
CC address
BCC address
Local Host name
Subject
Username
Password
Server address
Default Value:None

Chapter 4 – SMTP Commands
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#SMTPSENDMAILi – Send Mail without Interactive Mode
Description: This command sends one of the 3 pre-defined email combinations. Once an IP link is
established, the attached host can direct the TCP/IP stack to send an email message at
anytime (except when the TCP/IP stack software is already using TCP resources). This
email's header is built using the REC1/2/3, CCREC1/2/3 and SUBJ1/2/3 parameters
while the body is filled in the BODY1/2/3 parameter. This command is similar to a “send
email” operation issued by a standard messaging client on a PC.
Syntax: Set Value: AT#SMTPSENDMAILi (replace i with 1, 2, or 3)
Values:REC1 or REC2 or REC3
CCREC1 or CCREC2 or CCREC3
SUBJ1 or SUBJ2 or SUBJ3
BODY1 or BODY2 or BODY3
SENDERADDR
SENDERNAME
DOMAIN
SMTPPORT
SMTPSERV
SMTPPW
SMTPUN
Default Value:None
#SMTPPUTMAIL – Send Mail to Recipient 1 and CC 1
Description: This command allows the attached host to send an email message passed to the TCP/IP
stack over the serial port and requests the message body to be entered. After entering
the message, type Ctrl+D to end the message and send the email.
Once an IP link is established, the attached host can send the email message at anytime
(except when the TCP/IP stack software is already using TCP resources). The header of
this email is built using the REC1, CCREC1 and SUBJ1 parameters. This command is
similar to a “send email” operation issued by a standard messaging client on a PC.
Syntax: Set Value: AT#SMTPPUTMAIL
Values:REC1
CCREC1
SUBJ1
SENDERADDR
SENDERNAME
DOMAIN
SMTPPORT
SMTPSERV
SMTPPW
SMTPUN
Default Value:None
#SMTPPUTMAIL -B – Send Mail to Recipient 1 and CC 1 with
Interactive Mode
Description: This command is used to send mail with MIME Encoded Binary attachments. The SMTP
session enters into interactive mode requesting the message body to be entered. After
entering the message, type Ctrl+D to end the message. The SMTP session then enters
into interactive mode requesting media-type, media-subtype, file name, file size and the
attachment body. When the attachment body reaches the file size, another message
displays asking whether to continue with one or more attachments. Type ‘Y’ for more
attachments and type ‘N’ to send mail. Then the email with its attachment is sent to the
to-addresses and cc-addresses configured.
Syntax: Set Value: AT#SMTPPUTMAIL -B
Values:None

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#SMTPVERBOSE – Verbose Mode
Description: This command enables or disables server responses.
Syntax: Set Value: AT#SMTPVERBOSE=<Value>
View Value: AT#SMTPVERBOSE?
Values: 0: Disable
1: Enable
Default: 1: Enable
#SMTP? – SMTP Module
Description: Directs the TCP/IP stack to display all the AT# values/parameters related to the email
sender configuration.
Syntax: View Values: AT#SMTP?
Values:DOMAIN
SENDERADDR
SENDERNAME
CCADDRESS1
CCADDRESS2
CCADDRESS3
RECADDRES1
RECADDRESS2
RECADDRESS3
SUBJ1TXT
SUBJ2TXT
SUBJ3TXT
MESSAGEBODY1TEXT
MESSAGEBODY2TEXT
MESSAGEBODY3TEXT
SMTPPORT
SMTPPW
SMTPSERV
SMTPUN
Default Value:None

Chapter 5 – TCP Commands
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Chapter 5 – TCP Commands
#TCPDLEMODE – Coding the ETX Character
Description: When using a socket TCP, the attached host has the choice whether or not to code the
ETX character.
Syntax: Set Value: AT#TCPDLEMODE=<value>
View Value: AT#TCPDLEMODE?
Values:0 When DLEMODE is set to 0, no specific process is needed on [ETX] characters. It
means that it is not possible for a host to request an end of connection or to receive a
clear indication of the end of a connection from the TCP/IP stack. Termination of the
TCP or UDP connection will be based on PIO (DTR) or +++ escape sequence.
1 When DLEMODE is set to 1, the [ETX] character means a request or an indication of
end of connection. As a consequence, [ETX] characters that belong to the payload
data must be sent by the host on the serial port preceded by a DLE character.
Similarly, ETX characters received by the TCP/IP stack from the Internet are sent to
the host through the serial port preceded by a DLE character.
Default Value:0 Disable
#TCPPORT – Port of Remote Peer Used for TCP Session
Description: To exchange data over TCP, the TCP/IP stack software must know the port of the remote
peer used for the TCP session.
Syntax: Set Value: AT#TCPPORT=<value>
View Value: AT#TCPPORT?
Values:From 1 to 5 digits (each digit between 0 and 9 inclusive). Note that numbers above
65,535 are illegal as the port identification fields are 16 bits long in the TCP header.
Default Value:1234
#TCPSERV – Address of the Remote TCP Server
Description: To exchange data over TCP, the TCP/IP stack software must know the address of the
remote TCP server (or host) that is to be used.
Syntax: Set Value: AT#TCPSERV=<value>
View Value: AT#TCPSERV?
Values:32-bit number in dotted-decimal notation (i.e., xxx.xxx.xxx.xxx) or Alphanumeric ASCII
text string up to 120 characters if DNS is integrated. It will take a blank space also.
Default Value:None
#TCPTXDELAY – Time Delay Before Sending a TCP Frame
Description: This parameter determines the time delay introduced before sending a TCP frame that
has not been entirely filled with user data. The time is entered in milliseconds, and it
should be noted that a value of 0 initiates the sending of a TCP frame as soon as
possible after the reception of a single character value from the host.
Syntax: Set Value: AT#TCPTXDELAY=<value>
View Value: AT#TCPTXDELAY?
Values:Integer multiple of 20 between 0 and 32760 inclusive.
Default Value:0