Hello there,
New here, thought I would add some input here. I am having issues with the newer UMTS based modems with the Sierra 319U and the NovaTEL MC679. As described in other posts, the modem goes in, starts up okay, runs for a bit, then shuts down, lights off. The only fix is to reboot the DIR-412 (power cycle). Is there possibly a new load I could try? I am running 1.10 WW firmware (Dec 2010), and the modems are on the TELUS network. Thanks in advance.