AC75 AT Command Set
10.7 AT^SISR s
AC75_ATC_V01.002 Page 280 of 569 10/30/06
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10.7 AT^SISR Internet Service Read Data
The AT^SISR command either triggers a read operation (download) or queries the number of bytes in the internal
buffer.
The AT^SISR write command may return the following errors:
•"+CME ERROR: operation failed" if there is a problem on application, socket, PPP or GPRS/GSM level. The
AT^SISE command and the "^SIS" URC offer additional error information.
•"+CME ERROR: operation temporary not allowed" e.g. if the service has not network resources allocated.
•"+CME ERROR: operation not allowed" e.g. if the service is not configured.
Syntax
Unsolicited Result Code
^SISR: <srvProfileId>, <urcCauseId>
Data availability status of the Internet service configured with AT^SISS has changed. The URC is issued when:
• data is available after opening an Internet service or
• less data was confir med (in <cnfReadLength>) than requested (with <reqReadLength>) during the last
"Read Data" operation and new data is available.
The URC is disabled in polling mode. See AT^SCFG, parameter "Tcp/WithURCs", <tcpWithUrc>.
Parameter Description
<srvProfileId> 0 ... 9 specified with AT^SISS.
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 <srvProfileId>.
Test Command
AT^SISR=?
Response(s)
OK
Write Command
AT^SISR=<srvProfileId>, <reqReadLength>
Response(s)
^SISR: <srvProfileId>, <cnfReadLength>[, <remainUdpPacketLength>[, <optServParm>]]
Number of data bytes are sent as specified by <cnfReadLength>. If peek operator was used no data bytes
are sent.
OK
ERROR
+CME ERROR: <err>
PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4Last
± + + + + + + - - +
<srvProfileId>(num)
<reqReadLength>(num)