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What's the maximum timeout value when using the AT+CIPSEND command to send data to SIM900 modules?

2018-10-15 17:35:14

The maximum timeout value for the SW of SIM900 series is 7 minutes. However, in practical application, if the module cannot receive acknowledgement from the far-end within 3 minutes, SIMCom recommends that users resend the data. If ACK is not received from the far-end 3 times, SIMCom suggests that users check the network status through AT + CREG, or connect and reestablish the connection with AT + CSQ or AT + CIPSHUT.

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