usb 3G/4G modem is not suitable for massive deployment, why not integrate?
4G backup link is very usefull for retail customers, coz their business rely on internet connection/vpn, due to hevy use of CRM/on line payment/promotions activities.
(yes we have clients using about 300 cisco 887 router, but its too expensive for most customers (to massive deployment), missed a lots of opportunities. )
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