Wholesale VoIP-SIP Service is based on the transport of voice packets over the Internet (Voice over IP) by means of the Session Initial Protocol (SIP). SIP is the network protocol, IP native, specified by the Internet Engineering Task Force (IETF) establishing itself in the international context as the standard protocol to carry voice calls over IP. VoIP-SIP allows Service Providers to supply an integrated service of telephony and Internet access to its end Customers.

To enjoy the service, end user shall be equipped with an appropriate VoIP-SIP device, such as:

• Soft-phone (a multimedia software for personal computer)
• Analog Telephone Adapter (ATA), to connect one or two analogue telephones, relying on an external router
• VoIP router, for the integrated connection of PC and one or two analogue telephones; option integrates the router functionality

Above mentioned hardware or software device shall authenticate the end user at the Eutelia SIP Gateway by using parameters submitted at configuration time.