I took the SIM card out and reinserted it. Now I get this:
+EVENT:LOG,24,5,DEBUG,13,ICCID loaded:
+EVENT:LOG,30,5,DEBUG,19,8944501006151402650
+EVENT:LOG,23,5,DEBUG,12,IMEI loaded:
+EVENT:LOG,26,5,DEBUG,15,353162070598264
+EVENT:LOG,53,5,DEBUG,42,Bootstrapping (4/14): Init event handling.
+EVENT:LOG,57,5,DEBUG,46,Bootstrapping (5/14): Wait for carrier signal.
+EVENT:LOG,57,5,DEBUG,46,Bootstrapping (5/14): Wait for carrier signal.
+EVENT:LOG,57,5,DEBUG,46,Bootstrapping (5/14): Wait for carrier signal.
+EVENT:LOG,57,5,DEBUG,46,Bootstrapping (5/14): Wait for carrier signal.
+EVENT:LOG,57,5,DEBUG,46,Bootstrapping (5/14): Wait for carrier signal.
+EVENT:LOG,57,5,DEBUG,46,Bootstrapping (5/14): Wait for carrier signal.
+EVENT:LOG,57,5,DEBUG,46,Bootstrapping (5/14): Wait for carrier signal.
+EVENT:LOG,36,5,DEBUG,25,Modem event: signal found
+EVENT:LOG,42,5,DEBUG,31,Modem event: Network registered
+EVENT:LOG,57,5,DEBUG,46,Bootstrapping (6/14): Establish operator link.
+EVENT:LOG,48,5,DEBUG,37,Bootstrapping (7/14): Config network.
+EVENT:LOG,44,5,DEBUG,33,Bootstrapping (8/14): Config APN.
+EVENT:LOG,51,5,DEBUG,40,Bootstrapping (9/14): Config IP address.
+EVENT:LOG,51,5,DEBUG,40,Bootstrapping (10/14): Link up (1 of 2).
+EVENT:LOG,51,5,DEBUG,40,Bootstrapping (11/14): Link up (2 of 2).
+EVENT:LOG,39,5,DEBUG,28,Modem event: Data registered
+EVENT:LOG,61,5,DEBUG,50,Bootstrapping (12/14): Link verification (1 of 2).
+EVENT:LOG,61,5,DEBUG,50,Bootstrapping (13/14): Link verification (2 of 2).
+EVENT:LOG,67,5,DEBUG,56,Bootstrapping (14/14): Enter serial passthrough mode. OK
+++
+EVENT:LOG,38,5,DEBUG,27,Opening connection to cloud
+EVENT:LOG,42,5,DEBUG,31,Data successfully sent to cloud
Super!