Rich just wrote about an interesting conference session titled SIP Trunking - Realizing Rapid ROI Today, taking place at Internet Telephony Conference & Expo (ITEXPO) in just 2 weeks. Although I ditched my residential Vonage VoIP service, due to price and QoS issues, that doesn't mean I don't whole-heartedly support SIP trunking in the corporate enterprise -- where voice is even more critical. Most corporations have better QoS Internet/IP connectivity than residential Internet offerings, thus SIP trunking with "guaranteed QoS" is a viable option to an expensive voice PRI/T1/E1 line. Some service providers offer voice VPNs for added security. If your attending ITEXPO, definitely check out this session to see how SIP trunking can save on telecom costs.