Using VOIP GATE , a subscriber can wire two analogue phones with two separate numbers and can call by SIP protocol. VOIP GATE is wired to the internet like any other equipment, for example; computers. The GATE can get an IP address from DHCP server or use PPPoE. It also works wit NAT. If a line hold from current operator is necessary, VOIP GATE makes it available. Incoming traffic is directed to the old phone number and outgoing traffic goes by the BiznesFon service at much lower rates.