All our regular North American and Toll-Free numbers can now be used as Incoming SIP URI, free of charge. This mean that our servers will accept anonymous SIP Calls to your DID numbers. You also do not have to specify the specific server. For example, if your DID is 5552341234, you could forward calls from another provider to the following URI: [email protected] The call will automatically be routed to the proper server and use the same call treatment as if it was a regular call.