This implements a small subset of the AT commands defined in the u-blox Short Range Modules documents
Its a Linux only implementation.
sudo network-manager.nmcli con add type gsm ifname cdc-wdm0 con-name three apn three.co.uk
sudo network-manager.nmcli con up three
sudo network-manager.nmcli con show three
sudo network-manager.nmcli con down three