User manual

AT-323 SIP Phone User Manual (V1.43)
20
 net2phone: Use Net2phone’s SIP system
 Sipphone: Free SIP service on internet, please visit
www.sipphone.com
for more information.
 Inphonex: Free SIP service on internet, please visit
www.inphonex.com
for more information.
 Fwd: Free SIP service on internet, please visit
www.freeworldialup.com
for more information.
 ndtel: Use NGTEL’s SIP system
 ayctel: Use ayctel’s SIP system
● sip proxy: If “use service” is checked, please set the URI of SIP proxy
server .
●
domain/realm: Set the domain name of the SIP proxy server.
● nat traversal: When the IP phone with private IP address need
communicate with other IP phones in a different LAN or on Internet,
please select an item from dropdown list to set the proxy used by the
phone.
 disable: Select this item when the log in server and IP phone in
the same LAN, or the log in system supports the IP phone working
behind the LAN.
 enable: When the system does not support IP phone working
behind the LAN, please select this item to search public IP address of
the NAT device. With this item selected, “nat addr” field will be
activated. Besides, port mapping (port forwarding) needs to be
properly set up on NAT device.
 stun: Select this item with SIP protocol used according to
requirement of system. With this item selected, nat addr field is
activated.
● nat addr: When “nat traversal” is set to “enable”, please put the
domain name of the servers ( These web server helps to find out the
public IP of the IP phone) into “nat addr”, such as
www.whatismyip.com
.
VoIPon www.voipon.co.uk [e-mail] Tel: [phone] Fax: [phone]