Siemens MC55 AT manual Usage of parameter eodFlag, Http / POP3

<unackData>(num)

Number of data bytes already sent but not yet acknowledged at the TCP layer.

The value is constantly changing until the entire upload job has completed. If the value equals 0 all data sent so far is acknowledged.

In binary mode, <unackData> includes the <cnfWriteLength> value of the pending write operation. There- fore, the very first write operation of an upload job returns identical values for <cnfWriteLength> and

<unackData>.

This mechanism allows the host application to easily verify whether or not the remote host has successfully received the data.

Parameter is not applicable to HTTP, POP3, SMTP and Socket UDP client. For these services the counter is always set to 0.

<urcCauseId>(num)

1	The service is ready to accept new user data.
2	Data transfer has been finished successfully and Internet service may be
	closed without loss of data.

Notes

•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. Also refer Section 1.4, AT Com- mand Syntax.

•If the Socket service is configured for UDP and fixed size and the interactive text mode is active, the PDU length always equals the specified fixed length. If the input characters exceed the specified fixed length, then all surplus characters will be ignored. If the input characters are less than the specified fixed length, then the remaining range will be filled with "\0" bytes.

10.8.1Usage of parameter <eodFlag>

Service type
Socket	After the service accepts the end-of-data flag the service state changes to "Closing". No fur-
	ther user data is accepted.
	After releasing the TCP link the service remains in state "Down".
FTP	Parameter only applicable for FTP upload session.
	After accepting the end-of-data flag the service state changes to "Closing" and starts to end
	the running FTP session.
	No further user data is accepted.
	After the FTP session is completed on FTP protocol level the service state switches to "Down".
	In case of successful completion the URC "^SISW: x,2" is generated.
SMTP	SMTP service sends some "closing" commands to the SMTP server which are necessary to
	mark the email as successfully sent on the server. The service enters "Closing" state and
	remains in it until the final protocol exchange with the SMTP server has been completed.
	The "OK" response following AT^SISW indicates that the SMTP service has accepted the last
	data - IT DOES NOT indicate the successful completion of the SMTP service.
	Successful completion will be indicated either by the appropriate URC "^SISW:x,2" or due to
	the fact that the SMTP service state changes to "Down" state without any error.
HTTP / POP3	Parameter not applicable, i.e. value is ignored.

MC55_ATC_V04.00	Page 250 of 475	3/17/06
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