I'm looking for a device that takes two or more GSM SIM cards, connects over 2G/3G/4G, depending on what is available in that area, and aggregates those links for higher bandwidth and/or redundancy in case one of the cellular networks is not available.
Ideally, the device would also be a WiFi AP, with at least some rudimentary QoS services.
Googling around I've found Cisco 880 series, and it looks like it fits the bill. Are there any other devices that I should look into?
Thanks guys!