AT commands Network commands
Digi XBee3 Cellular LTE-M Global Smart Modem User Guide
108
Default
0x01
TL (SSL/TLS Protocol Version)
Sets the SSL/TLS protocol version used for the SSL socket. If you change the TL value, it does not
affect any currently open sockets. The value only applies to subsequently opened sockets.
Note Due to known vulnerabilities in prior protocol versions, we strongly recommend that you use the
latest TLS version whenever possible.
For TLS, the ublox SARA-R4 series AT Commands Manual provides the list of supported cipher suites
under the SSL/TLS security layer profile manager +USECPRF heading.
Range
Value Description
0x00
SSL v3
0x01
TLS v1.0
0x02
TLS v1.1
0x03
TLS v1.2
Default
0x03
$0 (SSL/TLS Profile 0)
Specifies the SSL/TLS certificate(s) to use in Transparent mode (when IP (IP Protocol) = 4) or API
mode (Transmit (TX) Request: IPv4 - 0x20 or Tx Request with TLS Profile - 0x23 with profile set to 0).
Format
server_cert;client_cert;client_key
Parameter range
From 1 through 127 ASCII characters.
Default
N/A
$1 (SSL/TLS Profile 1)
Specifies the SSL/TLS certificate(s) to use for Tx Request with TLS Profile - 0x23 transmissions with
profile set to 1.
Format
server_cert;client_cert;client_key
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