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SIM900 AT Command Manual

SIM900_AT Command Manual_V1.03 176 12/24/2010

8.2.6 AT+CIPCLOSE Close TCP or UDP Connection

AT+CIPCLOSE Close TCP or UDP Connection

Test Command

AT+CIPCLOSE

Response

Response:

1) For single IP connection (+CIPMUX=0)

CLOSE OK

2) For multi IP connection (+CIPMUX=1)

<n>, CLOSE OK

Write Command

1) If single IP

connection

(+CIPMUX=0)

AT+CIPCLOSE

=<n>

2) If multi IP

connection

(+CIPMUX=1)

AT+CIPCLOSE

=<id>, [<n>]

Parameters

<n> 0 slow close

1 quick close

<id> a numeric parameter which indicates the connection number

Execution

Command

AT+CIPCLOSE

Response

If close is successfully:

CLOSE OK

If close fails:

ERROR

Reference

Note

AT+CIPCLOSE only closes connection at the status of TCP/UDP which

returns CONNECTING or CONNECT OK, otherwise it will return

ERROR, after the connection is closed, the status is IP CLOSE in single IP

mode

8.2.7 AT+CIPSHUT Deactivate GPRS PDP Context

AT+CIPSHUT Deactivate GPRS PDP Context

Test Command

AT+CIPSHUT=?

Response

Execution

Command

AT+CIPSHUT

Response

If close is successful:

SHUT OK

If close fails:

ERROR

Reference

Note

z If this command is executed in multi-connection mode, all of the IP

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