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It is possible to connect the GSM modem to the RouterOS device and use it to send and receive SMS messages. RouterOS lists such modem as a serial port that appears in the '/port print' listing. GSM standard defines AT commands for sending SMS messages and defines how messages should be encoded in these commands.'advanced tools package provides command '/tool sms send' that uses standard GSM AT commands to send SMS.
Sending
| Code Block | ||
|---|---|---|
| ||
/tool sms send |
Example
Sending command for ppp interface:
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| Parameter | Description |
|---|---|
| port (string) | Name of port from /port list that GSM modem is attached to. |
| phone-number (string) | Recepient Recipient phone number. Allowed characters are "0123456789*#abc". If the first character is "+" then the phone number type is set to international, otherwise, it is set to unknown. |
| channel (integer) | Which modem channel to use for sending. |
| message (string) | Message contents. It is encoded using GSM 7 encoding (UCS2 currently is not supported), so the message length is limited to 160 characters (characters ^{}\[]~ |
| smsc (string) | |
| type (string) | If set to class-0, then send class 0 SMS message. It is displayed immedeately immediately and not stored in the phone. |
| sms-storage (string) | Select storage where to save received SMS (modem/sim) |
USSD messages
USSD (Unstructured Supplementary Service Data) messages can be used to communicate with mobile network provider to receive additional information, enabling additional services or adding funds to prepaid cards. USSD messages can be processed by using AT commands (commands can differ or even may be blocked on some modems).
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PDU (Protocol Data Unit) message and its decrypted version is are printed under LTE debug logging.
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| Code Block | ||
|---|---|---|
| ||
/system logging add topics=lte,!raw /system logging print Flags: X - disabled, I - invalid, * - default # TOPICS ACTION PREFIX 0 * info memory 1 * error memory 2 * warning memory 3 * critical echo 4 lte,!raw memory |
To recieve receive account status from *245#
| Code Block | ||
|---|---|---|
| ||
/interface lte at-chat lte1 input="AT+CUSD=1,\"*245#\",15" output: OK /log print 11:51:20 lte,async lte1: sent AT+CUSD=1,"*245#",15 11:51:20 lte,async lte1: rcvd OK 11:51:23 lte,async,event +CUSD: 0,"EBB79B1E0685E9ECF4BADE9E03", 0 11:51:23 gsm,info USSD: konta atlikums |
Receiving
Since v3.24 RouterOS also supports receiving of SMS messages, and can execute scripts, and even respond to the sender.
Before the router can receive SMS, the relevant configuration is required in generalthe /tool sms menu. Following The following parameters are configurable:
| Parameter | Description |
|---|---|
| allowed-number (string; Default: "") |
| The sender number that will be allowed to run commands, must specify the country code ie. +371XXXXXXX | |
| channel (integer; Default: 0) | Which modem channel to use for receiving. |
| keep-max-sms (integer; Default: 0) | Maximum number of messages that will be saved. If you set this bigger than SIM supports, new messages will not be received |
. Replaced with auto-erase parameter starting from RouterOS v6.44.6 | |
| auto-erase (yes | no; Default: no) | SIM storage size is read automatically. When auto-erase=no new SMS will not be received if storage is full. Set auto-erase=yes to delete the oldest received SMS to free space for new ones automatically. Available starting from v6.44.6 |
| port (string; Default: (unknown)) | Modem port (modem can be used only by one process "/port> print" ) |
| receive-enabled (yes | no; Default: no) | Must be turned on to receive messages |
| secret (string; Default: "") | the secret password, mandatory |
Basic Example configuration to be able to view received messages:
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| Property | Description |
|---|---|
| phone (string) | Senders phone number. |
| message (string) | Message body |
| timestamp (time) | Time The time when the message was received. It is the time sent by the operator, not the router's local time. |
| type (string) | Message type |
Syntax
| Code Block | ||
|---|---|---|
| ||
:cmd SECRET script NAME [[ VAR[=VAL] ] ... ] |
- SECRET - the password
- NAME - the name of the script that's available in "
/system script" - VAR - variables that will be passed to the script (can be passed as VAR or as VAR=value), separated by spaces.
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- *Parameters can be put into quotes "VAR"="VAL" if necessary.
- *Escaping of values is not supported (VAR="\"").
- *Combined SMS are not supported, every SMS will be treated separately
- * 16Bit unicode messages are not supported
- * SMS are decoded with the standard GSM7 alphabet, so you can't send in other encodings, otherwise it will be decoded incorrectly
Examples
Wrong:
| Code Block | ||
|---|---|---|
| ||
:cmd script mans_skripts :cmd slepens script mans skripts :cmd slepens script mans_skripts var= :cmd slepens script mans_skripts var= a :cmd slepens script mans_skripts var=a a |
Right:
| Code Block | ||
|---|---|---|
| ||
:cmd slepens script mans_skripts :cmd slepens script "mans skripts" :cmd slepens script mans_skripts var :cmd slepens script mans_skripts var=a :cmd slepens script mans_skripts var="a a" |
Debugging
/tool sms send command is logging data that is written and read. It is logged with tags gsm,debug,write and gsm,debug,read For more information see system logging.
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AT+CMGS and AT+CMGF commands are used. Port is acquired for the duration of the command and cannot be used concurently concurrently by another RouterOS component. Message sending process can take a long time, it times out after a minute and after two seconds during the initial AT command exchange.