Siemens AC75 Manuel D’Utilisation

s

AC75_ATC_V01.002

Page 280 of 569

10/30/06

Confidential / Released

The 

 command either triggers a read operation (download) or queries the number of bytes in the internal

buffer. 

The 

 write command may return the following errors: 

•

 if there is a problem on application, socket, PPP or GPRS/GSM level. The

 command and the "

" URC offer additional error information. 

•

 e.g. if the service has not network resources allocated. 

•

 e.g. if the service is not configured. 

^SISR: 

Data availability status of the Internet service configured with 

 has changed. The URC is issued when: 

• data is available after opening an Internet service or 
• less data was confirmed (in 

) than requested (with 

) during the last

"Read Data" operation and new data is available. 

The URC is disabled in polling mode. See 

, parameter "Tcp/WithURCs", 

. 

 0 ... 9 specified with 

0

Peek Operator: Query number of received bytes within internal buffers. 

The behaviour of the peek operator depends on the selected Internet service,

i.e. it may not be supported by all IP Services. 

For "Socket" service configured for UDP the size of the next available UDP

packet is returned. 

1...1500

Requested number of data bytes to be read via the Internet service specified

in 

Test Command

AT^SISR=?

Response(s)

OK 

Write Command

, 

Response(s)

, 

[, 

Number of data bytes are sent as specified by 

. If peek operator was used no data bytes 

are sent. 
OK 

ERROR 

PIN

ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge

4

Last

<srvProfileId>

(num)

<reqReadLength>

(num)