Consumer
IP Phone
Wireless VoIP
VoIP Gateway
 
Enterprise/Carrier
IP-PBX
Trunking Gateway
SIP Proxy Server
Billing System
Session Boarder Controller
Enhance Service
Application Server
 
Other
Utility

 
Technical Support

IP Phone
 

GSM Gateway
 

VoIP Gateway
 

IP-PBX
 

Trunking Gateway
 

SIP Proxy Server
 

Billing System
 

Session Boarder Controller
 

Enhance Service
 

Application Server
 

PoE Switch

Utility