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eDRX & PSM Calculator

Encode and decode PSM timer values for LTE-M and NB-IoT

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Generate and decode T3412 (Periodic TAU) and T3324 (Active Time) values using the 3GPP timer format (TS 24.008 / TS 27.007). Reference source .

T3412
T3324

AT command

Network response / URC

PSM Decoder

Decode raw 8-bit TAU / T3324 values, or paste +CPSMS / +CEREG output and parse it automatically.

Parsed source: unknown

TAU (T3412)

Invalid timer byte (expected 8 binary digits)

T3324

Invalid timer byte (expected 8 binary digits)

T3412: Periodic TAU

Value must be between 0 and 31.

T3324: Active Time

Value must be between 0 and 31.

Generated command

AT+CPSMS=1,,,10101110,00000101
Generated TAU
10101110

Generated T3324
00000101

AT+CPSMS Command Generator

Choose the timer unit (first 3 bits) and value (last 5 bits) to generate an AT+CPSMS command in real time.

Unit Reference

T3412 Units

CodeMeaning
0112 seconds
10030 seconds
1011 minute
00010 minutes
0011 hour
01010 hours
110320 hours
111Deactivated

T3324 Units

CodeMeaning
0002 seconds
0011 minute
0106 minutes
011Deactivated
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