Specifications

UC864-E/G/WD/WDU AT Commands Reference Guide
80304ST10041a Rev. 7 - 2010-10-14
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 153 of 318
+CNMA – New Message Acknowledgement
Z/ESC]]] 1(+CSMS=1) when a +CMT or +CDS indication is show.
If no acknowledgement is given within the network timeout, an RP-ERROR
is sent to the network, the <mt> and <ds> parameters of the +CNMI
command are then reset to zero (do not show new message indication).
Either positive (RP-ACK) or negative (RP-ERROR) acknowledgement to the
network is possible.
Parameter:
<n> - Type of acknowledgement in PDU mode
0 : send RP-ACK without PDU (same as TEXT mode)
1 : send RP-ACK with optional PDU message.
2 : send RP-ERROR with optional PDU message.
<length> : Length of the PDU message.
Note : Refer to 3GPP TS 23.040 Recommendation for other PDU negative
acknowledgement codes.
(Text Mode)
AT+CNMA
Only positive acknowledgement to network (RP-ACK) is possible.
(PDU Mode)
AT+CNMA=? Test command returns the possible range of values for the parameter <n>
Example
(PDU Mode)
SMS AT commands compatible with 3GPP TS 27.005 Phase 2+ version .
AT+CSMS=1
+CSMS: 1,1,1
OK
Set PDU mode.
AT+CMGF=0
OK
AT+CNMI=2,2,0,0,0
OK
Message is received from network.
+CMT: "",70
06816000585426000480980600F170110370537284…
Send positive acknowledgement to the network.