I am new to VOIP and UC520. We have purchased a UC520 phone system. I am looking for tested and supported SIP provider for the UC520. I have read some of the post and I hear that some are using Cbyound and nexvortex. I guess these are providers that don not require you to use their broadband or T1 lines. I too prefer to not switching use our Comcast 25MB connection, but heard that I may experience issues . Someone also suggested Speakeasy as well.
I hope to hear from some people that HAVE USED the UC520 with SIP trunking.
Thank you for your help,.