User Manual

Above Figure 4.1 illustrates the action flow to get URC messages are invoked while both
DTE and modem in sleep mode. UE910 V2 FAMILY AND UC864-E V2 offers below serial
ports, which have their own the limitation for flow control methods.
Table 4.1 the flow control capability for each serial interface
Flow Control Method
Hardware Flow
Software Flow
Main UART
Support
Support
Telit USB Modem
Support(only for data mode)
Not Support
Telit USB Auxiliary
Not Support
Not Support
UE910 V2 FAMILY AND UC864-E V2 keeps the URC messages are listed in Table 4.1 and
enabled by AT command in power saving mode.
Table 4.2 URC message List
URC Message
Enable/Disable AT Command
RING
Not Support , Always enabled
NO CARRIER
Not Support , Always enabled
CONNECT
Not Support , Always enabled
+CIEV
+CIND
+CREG
+CREG
+CGREG
+CGREG
+CMTI,+CMT,+CBM,+CDS,+CDSI
+CNMI
+CCWA
+CCWA
#TEMPMEAS
#TEMPMON
#MWI
#MWI
#GSMAS
#GSMAD
+SRING
Not Support , Always enabled
+CRING
+CRC
+CLIP
+CLIP
+CUSD
+CUSD
+CCM
+CAOC
+CSSI,+CSSU
+CSSN
+CALA
+CALA
#QSS
#QSS
#ECAM
#ECAM
UE910 V2 FAMILY AND UC864-E V2 keeps the URC messages are listed in Table 4.1 and
enabled by AT command in power saving mode.
Table 3.1-3 VBUS Control System
Product
VBUS Master
UE910 V2 FAMILY
AND UC864-E V2
DTE ( must turn off VBUS when entering to sleep mode and turn on
VBUS when waking up from sleep mode )
Note: DTE can get URC message using only Main UART in power saving mode. If Main
UART is reserved for data communication, it’s impossible to get URC messages are invoked
during power saving mode. UE910 V2 FAMILY AND UC864-E V2 can’t keep URC
messages larger than 8K bytes, when hardware flow control is activated by
RTS(AT#CFLO=1). We recommend that DTE get the URC message as soon as RI signal is
guaranteed on Main UART.