Hello, I'm at my wits' end trying to get ofono working with the sim5320 module. I'm using the plugins/sim900.c module as a starting point. I think the issue has something to do with the difference between the MUX functionality between the 900 and the 5320. The sim900 supports the elaborate parameters sent on the AT+CMUX=0,x,x,x,x, etc. but the SIM5320 only supports AT+CMUX=0 There's that... but also the way the sim900 plugin creates a SETUP_DLC, initiates muxing, then deletes the setup DLC and creates 4 new DLC's... it didn't work for the sim5320 until I remapped the DLC's somewhat like this: #define NUM_DLC 4 #define VOICE_DLC 2 #define NETREG_DLC 1 //#define SMS_DLC 2 #define GPRS_DLC 3 #define SETUP_DLC 0 static char *dlc_prefixes[NUM_DLC] = { [VOICE_DLC]="Voice: ", [NETREG_DLC]="Net: ", // [SMS_DLC]= "SMS: ", [GPRS_DLC]= "GPRS: " , [SETUP_DLC]= "Setup: ", }; Note I have to eliminate the SMS_DLC usage later in sim5320_post_sim: // ofono_sms_create(modem, OFONO_VENDOR_SIMCOM, "atmodem", // data->dlcs[SMS_DLC]); OK everything is *ALMOST* working. ofonod interacts fine with connmand, connmand tells ofonod to activate the sim5320, which actually establishes a ppp connection and sets up a ppp device: ppp0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-0 inet addr:30.97.132.47 P-t-P:30.97.132.47 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:2 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 B) TX bytes:124 (124.0 B) Here's the rub: No matter what I do, I never get any RX packets from that ppp device, and even when it appears to TX packets (I'm trying to ping out) the machine on the internet isn't actually receiving them. I'm running on a beaglebone with a custom board with a sim5320 module on it. I have no idea what to try... Any advice would be appreciated... Thanks very much!!!! -Dave