Specifications

MC55 AT Command Set

10.6 AT^SISW

MC55_ATC_V03.03 Page 247 of 459 9/9/05

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Confirmed number of data bytes to be transmitted via the Internet service configured in <srvProfileId>. This

number may be less or equal to the value requested with <reqWriteLength>. 0 value indicates that no data

can be written.

Indicates whether or not data are available for transfer with AT^SISW.

0 No data available for writing with AT^SISW.

1 New data can be written via AT^SISW.

2 In the case of Socket, FTP download, HTTP: Data transfer has been finished

and Internet service can be closed via AT^SISC.

In the case of FTP upload and SMTP: To indicate successful transmission, the

URC "^SISW: x,2" is sent after the service was gracefully closed. If the FTP

upload or SMTP service is closed immediately the URC will not be sent.

Notes

• If the Socket service is used with UDP protocol the maximum requestable write size (parameter <reqWrite-

Length> is limited to 1460 bytes. Any attempt to write more than 1460 bytes will be denied and causes the

following URC to appear: "^SIS: <id>, 0, 9, The supplied buffer was too small / large".

•The AT^SISW write command must be terminated only with the ASCII character set with ATS3. The factory

default for S3 is #13 (Carriage Return). Do not send any further characters after the S3 end-of-line identifier,

until the response "^SISW" is received. This is necessary to avoid that any characters related to the AT com-

mand can be interpreted as being part of the data stream to be transferred. See also Section 1.4, AT Com-

mand Syntax.

(num)

(num)