Good News!
After banging my head against what I thought was an IRQ issue with the Gobi2000 and the Ethernet Controller I have discovered that my problem was a bad FW image. When I ran a CRC check against it the sum was incorrect. I tracked down another version of the Firmware from a different location and tossed it up on the router.
The Gobi2000 is working in Router OS v5.0rc5 on RB411U with FW 2.20 (not upgraded yet)...
routerboard: yes
model: "411U"
serial-number: "1EE301905804"
current-firmware: "2.20"
upgrade-firmware: "2.28"
[admin@MikroTik] /port> pri
Flags: I - inactive
# NAME CHANNELS USED-BY BAUD
0 serial0 1 Serial Console auto
1 Gobi2000 2 auto
I have yet to make a data call but all indicators are point to a successful initialization of the cards itself. I have run through the AT Command Set and all of the commands that do not require an active carrier are working. I was unable to access GPS information, but I think that is because the Linux Kernel used in the Router OS does not have the patch that enables the other two (2) composite devices on this card. If the Mikrotik guys are interested in getting this working there is more information on the kernel patch
here.
I am taking the card down to Sprint tomorrow to have it activated.
If anyone wants the firmware images for this card just let me know and I will get you the links.
It is way after hours here in the office so I will post back with more information tomorrow and I will create a howto for the Mikrotik Wiki.
Cheers & 73!
Casey Annis
CDM Wireless