modem/network combo cards	answering machines	telephone switching equipment
telephones	VoIP telephone adapters	antennas
bridges & repeaters	firewalls (hardware)	gateways/controllers
hubs & concentrators	IP communication servers	ISDN access devices
media filters	modems	network analyzers
network cards & adapters	network switches	networking cables
PoE adapters & injectors	print servers	routers
switch components	switchboard equipment	telephony cables
transceivers/media converters	video servers	voice network modules
VPN security equipment	WLAN access points	video networking equipment
network splitters	call management system