It depends on your VoIP service provider. VoIP is regulated at the federal level, therefore VoIP service providers (VSPs) are not subject to the Commonwealth's E 911 requirement. In June of 2005 the Federal Communications Commission (FCC) issued an Order, (FCC 05-116) mandating that all VSPs deliver E 911 services no later than November 28, 2005.
The State 911 Department has worked with our E 911 service provider and VSPs serving Massachusetts to integrate the technology into our E 911 system. Before a VSP can be approved to provide VoIP service in Massachusetts they must go through a testing process with the State 911 Department to ensure the calls are delivered with complete and accurate information. For a list of VSPs currently approved to provide E 911 service in Massachusetts please visit the State 911 Department page.