Hello,
in technical specifications says:
• Mobile-originated and mobile-terminated SMS over IMS for LTE
• Mobile-originated and mobile-terminated SMS over SGs for LTE
however there is no documented AT command to enable/disable IMS.
So the firmware is capable of doing this but it is all wrapped up in operator configuration. The unit was developed when IMS’s were not common. To get it to work (assuming IMS is enabled on the unit which is a factory setting) you need to set a CID (at+cgdcont) to the IMS’s APN, typically this is ‘ims’ and then point the firmware at it, example below
at$qcpdpimscfge=2,1,0,0 //Set the IMS stack to use CID 2
I have tested this in the WP76, not an MC, hopefully it will work.
What network is this? Do they definitely have an IMS and you have the right APN? Last Q why do you explicitly want to send SMS through the IMS? It can go via other channels (which the unit will probably choose anyway). After that there effectively no use for it with regards the MC as it is a data only product.