... 4.One Year Warranty Linksys PAP2T1.2 FXS VoIP phone adapter 2.Re-registration with Primary SIP Proxy ... Portable UNLOCKED LINKSYS PAP2T SIP VOIP Phone Adapter with 2 FXS Ports 1. Support SIP2.0 (RFC3261), ... DNS, DHCP, NTP, PPPoE, STUN, and TFTP etc; 2. Inside Rooter/NAT, gateway, and DMZ Port transmit; 3 ... conference call; 8. Support passing through and T38 fax; 9. Support layer 2 (802.1Q VLAN, 802.1p) and ...