Grandstream Networks HT701 User Manual page 38

Outbound Proxy
Allow DHCP Option
120( override SIP server
)
SIP transport
NAT Traversal (STUN)
SIP User ID
Authenticate ID
Authenticate Password
Name
DNS Mode
Tel URI
SIP Registration
FIRMWARE VERSION 1.0.7.3
IP address or Domain name of Outbound Proxy, or Media Gateway, or Session Border
Controller. Used by HT70X for firewall or NAT penetration in different network
environments. If symmetric NAT is detected, STUN will not work and ONLY outbound
proxy can correct the problem.
Default is No. If set to Yes, device will collect SIP server address from DHCP option
120 for FXS1 (HT701/2) or Profile1 (HT704).
User can select UDP or TCP or TLS. Default is UDP.
This parameter defines whether or not the HT70X NAT traversal mechanism is
activated. If activated (by choosing "Yes") and a STUN server is also specified, then the
HT70X performs according to the STUN client specification. Using this mode, the
embedded STUN client will detect if and what type of firewall/NAT. If the detected NAT
is a Full Cone, Restricted Cone, or a Port-Restricted Cone, the HT70X will use its
mapped public IP address and port in all of its SIP and SDP messages.
If the NAT Traversal field is set to "Yes" with no specified STUN server, the HT70X will
periodically (every 20 seconds or so) send a blank UDP packet (with no payload data)
to the SIP server to keep the "hole" on the NAT open.
User account information, provided by VoIP service provider (ITSP). Usually in the form
of digit similar to phone number or actually a phone number. HT701 and HT702 only
SIP service subscriber's Authenticate ID used for authentication. Can be identical to or
different from SIP User ID. HT701 and HT702 only
SIP service subscriber's account password. HT701 and HT702 only
SIP service subscriber's name for Caller ID display. HT701 and HT702 only
One from the 3 modes are available for "DNS Mode" configuration:
-A Record (for resolving IP Address of target according to domain name)
-SRV (DNS SRV resource records indicates how to find services for various protocols)
-NAPTR/SRV (Naming Authority Pointer according to RFC 2915)
One mode can be chosen for the client to look up server.
The default value is "A Record"
The default setting is "Disabled". If the phone has an assigned PSTN
Number, this field should be set to "User=Phone" then a
"User=Phone" parameter will be attached to the "From header" in the SIP
request to indicate the E.164 number. If server supports TEL URI format, then this
option needs to be selected.
Controls whether the HT701 needs to send REGISTER messages to the proxy server.
The default setting is Yes.
HT70X USER MANUAL Page 36 of 52