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Cinterion
®
ENS22-E AT Command Set
1.7 Unsolicited Result Code Presentation
ENS22-E_ATC_V01.000
19/02/11
Page 23 of 189
1.7
Unsolicited Result Code Presentation
URC stands for Unsolicited Result Code and is a report message issued by the UE without being requested by
the TE, i.e. an URC is issued automatically when a certain event occurs. Hence, a URC is not issued as part of
the response related to an executed AT command.
Typical events leading to URCs are received short messages, changes in temperature, network registration etc.
For most of these messages, the UE needs to be configured whether or not to send a URC. Descriptions of these
URCs are provided with the associated AT command. A summary of all URCs can be found in Section
Summary of Unsolicited Result Codes (URC)
Important:
If the interface used for URC output is reserved by an active data connection or a long running AT
command, URCs are buffered internally and will be issued after the interface becomes idle again. A pending
URC will be signaled on the URC output interface via RING line. This allows to systematically suspend any longer
data connection (refer
) to check for pending URCs after being signaled!
For detailed information regarding configuration of URC signaling refer to
, "URC/Ringline",
1.7.1
Common URCs
This section contains all URCs not associated to a certain AT command. They cannot be defined by the user and
appear automatically when the voltage conditions described below occur.
Notes for "^SBC" URCs reporting undervoltage/overvoltage conditions:
for specifications regarding the minimum and maximum operating voltage limits. If the supply
voltage exceeds the defined thresholds the UE switches off automatically. The automatic shutdown procedure
is equivalent to the power-down initiated with the
command.
URC 1
^SYSSTART
Indicates that the UE has been restarted to Normal mode and is ready to operate.
URC 2
^SBC: Undervoltage Warning
Supply voltage is close to the defined undervoltage threshold.
URC 3
^SBC: Undervoltage Shutdown
Undervoltage threshold exceeded. UE automatically switches off.
URC 4
^SBC: Overvoltage Warning
Supply voltage is close to defined overvoltage threshold.
URC 5
^SBC: Overvoltage Shutdown
Overvoltage threshold exceeded. UE automatically switches off.