Currently I am trialling the CM820 at one client's work site. They are impressed with the improvement in throughput in LTE // xDSL and it could lead to another sale of a router. 
Great product. I did some field tests from the substation location of a wind farm under construction site last week. Fantastic results. http://www.speedtest.net/my-result/i/772532497
We used an external high gain yagi antenna pointed vaguely in the Wonthaggi direction (4G coverage) which was about 50klms away. I have so far used standard internet APN: Telstra.internet and our Telstra MPLS APN: Telstra.corp with radius authentication. All with great results. We are considering installing 2 in fail over mode, pointing at different towers.
I have been playing with the Comset modem and I am very impressed. It does everything I need and more. Having wifi built in and being able to switch the WAN port to be a second Ethernet port is very powerful.
We are planning to use this modem in a newer model of system going forward.
I have tested this morning and the VPN seems to be working ok! Thank-you very much for your excellent support!
As the owner and operator of a computer consultancy to business we have learned over time that reliable Internet is an essential component of their success. Our clients have relied on a range of M2M and router options using network operators' in 3G and now 4G technologies. When we transitioned to Comset products, performance improved and particularly reliability compared to other devices that had to be regularly re-started during use as they 'went off the network at peak times'. Our customers' are also very impressed with the physical size and flexibility of Comset Router devices; Where a work site can be provided wired or particularly secure Wireless communications within one product. Comset Routers are also providing remarkable range of access; Our own office using an external antenna (fitted to a communications tower) has 4G // LTE at 15MBps downlink and 2MBps uplink all day, every day, over a 37KM non line of site link. I never thought 4G would be possible at our remote office, but it is with Comset products.
Great product. Fantastic results. Download speeds of 63Mbps: http://www.speedtest.net/my-result/3652094620