Hi, I thought it might be useful to post the following information regarding my experience of recently installing a 3G USB modem into a Routerboard.
RB493G
The RB493G does not supply 5V on the USB port so I have a cable from this USB port to a USB powered hub.
ZTE MF-112 plugged into the powered hub.
Data Channel = 2
Information Channel = 1
USB modem shows up in /port print
USB modem shows up in /system resource usb print
I am using a 3(Three) UK broadband SIM.
Create a new PPP Client interface accepting all the defaults except.
Port = use the correct port as discovered in the /port print command for your USB modem. Data channel = 2 Info Channel = 1 APN option 1 = "three.co.uk" - this allocates you a 10.x.x.x natted IP address APN option 2 = "3internet" - this allocates you a public IP address I unticked "Dial on Demand", "Add Default Route" and "Use Peer DNS" although this is just my personal preference.I also discovered that enabling the “async” logging category was extremely helpful in detemining what this modem was doing. The ZTE MF-112 is reported in the “Mikrotik Hardware List” as having some power difficulties on certain boards but I have not seen anything of this type with this installation.
I am using v5.7.
Regards, Dominic.