Getting started with the XBee Smart Modem Development Kit
Send an SMS message to a phone
Digi XBee3 Cellular LTE-M Global Smart Modem User Guide
18
Send an SMS message to a phone
The XBee Smart Modem can send and receive Short Message Service (SMS) transmissions (text
messages) while in Transparent mode. This allows you to send and receive text messages to and from
an SMS capable device such as a mobile phone.
The following table explains the AT commands that you use in this example.
Command
Value
Description
AP
(API Enable)
0
Set the device's API mode to Transparent mode.
IP
(IP Protocol)
2
Set the expected transmission mode to SMS communication.
P#
(Destination Phone
Number)
<Target
phone
number>
The target phone number that you send to, for example, your
cellular phone. See
for instructions
on using this command.
TD
(Text Delimiter) D (0x0D)
The text delimiter to be used for Transparent mode, as an ASCII hex
code. No information is sent until this character is entered, unless
the maximum number of characters has been reached. Set to zero
to disable text delimiter checking. Set to D for a carriage return.
PH
(Module's SIM
phone number)
Read
only
The value that represents your device's phone number as supplied
by the SIM card. This is used to send text messages to the device
from another cellular device.
1. Ensure that the device is set up correctly with the SIM card installed and the antennas
connected as described in
2. Open XCTU and
.
3. Click the
Configuration working mode
button.
4. Select a device from the
Radio Modules
list. XCTU displays the current firmware settings for
that device.
5. To switch to SMS communication, in the
IP
field, select
2
and click the
Write
button
.
6. To enter your cell phone number, in the
P#
field, type the <
target phone number
> and click
the
Write
button. Type the phone number using only numbers, with no dashes. You can use the
+
prefix if necessary. The target phone number is the phone number you wish to send a text to.
7. In the
TD
field, type
D
and click the
Write
button.
8. Note the number in the
PH
field; it is the XBee Smart Modem phone number, which you see
when it sends an SMS to your phone.