AR1688 Reference Settings     SIP Name Referrence Setting Service Provider iptel iptel_sip_us.html iptel.org Palmmicro IP-PBX asterisk_pbx_sip_us.html palmmicro.com SIP2SIP sip2sip_sip_us.html sip2sip.info SIPphone Gizmo5 sipphone_sip_us.html sipphone.com (Google bought it and closed it) VoipDiscount voipdiscount_sip_us.html voipdiscount.com VoIPtalk voiptalk_sip_us.html voiptalk.org     IAX2 Name Referrence Setting Service Provider Palmmicro IP-PBX asterisk_pbx_iax2_us.html palmmicro.com     Settings Tips Network {Connection Type:PPPoE} {Layer 2 QoS:802.1Q VLAN Tag} Voice {Preferred Voice Codec:G.726-32/iLBC/Speex Frames per TX} {Voice Activity Detection (VAD)} SIP Proxy {NAT Traversal: Use STUN Server} Dial Plan {Use Digit Maps} {Use "#" To Call} System {Administration Password} {Syslog IP}