You can use your computer as a professional IP phone. Here is the software that makes it possible:

VTGO-PC Advanced:is an SCCP based softphone that emulates a 34
line Cisco 7960 IP phone with 2 x 7914 Expansion Modules. VTGO-PC integrates seamlessly
with Cisco Call Manager and MS Outlook to provide effeciency and moblity to your

VTGO-PC Lite is an SCCP based softphone that emulates a six (6) line
Cisco 7960 IP phone. VTGO-PC integrates seamlessly with Cisco Call Manager and MS
Outlook to provide effeciency and moblity to your Call Manager enviornment.

Mobile IP communications for PDAs on wireless networks

VTGO PocketPC defines the next generation in communications mobility. VTGO empowers users, allowing them to speak and move throughout a campus untethered - while simultaneously allowing them to browse the web, engage applications and access full unified messaging capabilities.

VTALL This software is designed for enterprises. As a communication platform, VTALL is unique in its ability to deliver multiple conversations over an IP network with full telephony control - previously found only in classic telecommunication systems.