I am using a knot on routerOS 7.8 with a BG-77, and AT&T "NB-IoT One Rate Plan" sim card, which is activated in their portal.

I have set the APN m2m.com.attz in interfaces\ppp-out1 and interfaces\LTE\LTE APNs

In the log I am seeing the modem initialize, dial out, and then it encounters crtical error, "2: setting APN failed".

I have tried setting the APN manually directly on the modem as suggested in other posts, however I can't seem to make this stick (see below).

Does the modem use all the PDP profiles at once?


AT+CGDCONT?
+CGDCONT: 1,"IP","internet","0.0.0.0",0,0,0
+CGDCONT: 2,"IPV4V6","ims","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0
+CGDCONT: 3,"IP","attm2mglobal","0.0.0.0",0,0,0
+CGDCONT: 4,"IP","m2m.com.attz","0.0.0.0",0,0,0

OK
AT+CGACT=0,4
OK
AT+CGACT=?
+CGACT: (0,1)

OK
AT+CGACT?
+CGACT: 1,0
+CGACT: 2,0
+CGACT: 3,0
+CGACT: 4,0

OK
AT+CGACT=4,0
ERROR

OK
AT+CGMR
BG77LAR02A02

OK
AT+CGDCONT=1,"IP","m2m.com.attz"
ERROR

AT+CGDCONT=1,"IP","m2m.com.attz"
ERROR
AT+CGDCONT=4,"IP","m2m.com.attz"
OK
AT+cgact?>
ERROR
at+cgact?
+CGACT: 1,0
+CGACT: 2,0
+CGACT: 3,0
+CGACT: 4,0

OK
at+cgact=?
+CGACT: (0,1)

OK
at+cgact=0,4
OK
at+cgact=?
+CGACT: (0,1)

OK