4G NAT  / Firewall Manufacturers

A 4G NAT device is a gateway for the SIP Network to access the Internet via 4G wireless networks, LTE or WiMAX. 

Novatel Wireless

CradlePoint


4G NAT  / Firewall Service Providers

Clear

Verizon

Att

Sprint


Wired NAT / Firewall Manufacturers

A wired NAT device is a gateway for the SIP Network to access the Internet via wired networks such as fiber optic, coaxial cable, or DSL. The device of this type is call wired NAT or NAT. There are many NAT / firewall devices available.  Because these NATs also provide IP / Wi-Fi access, they are also called wireless router. Use Web search key words "wireless router" to locate them.  Here are some of them:

Cisco

Netgear

D-Link