Grandstream Networks HandyTone-386 User Manual page 22

HandyTone-386 User Manual
Firmware Key:
FXS Impedance:
Caller ID Scheme:
Onhook Voltage:
Polarity Reversal:
NTP Server:
Syslog Server:
Syslog Level:
Admin Password
Layer 3 QoS
Layer 2 QoS
No Key Entry
timeout
NAT Traversal
STUN Server
600 Ohm (Nor th Amer
Bellcore (North America)
36V
No
termination)
time.nist.gov
NONE
Update
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Administrator password. Only administrator can configure the "Advanced
Settings" page. Password field is purposely blanked for security reason after
clicking update and saved. The maximum password length is 25 characters.
This field defines the layer 3 QoS parameter which can be the value used for
IP Precedence or Diff-Serv or MPLS. Default value is 48.
Layer 2 QoS settings. Default setting is blank. Other VLAN supported
equipments required if configured these settings.
Default is 4 seconds. User can short or extend that depends on digits dialed
This parameter defines whether the HT386 NAT traversal mechanism will be
activated or not. If activated (by choosing "Yes") and a STUN server is also
specified, then the HT386 will behave according to the STUN client
specification. Under this mode, the embedded STUN client inside the HT386
will attempt to detect if and what type of firewall/NAT it is sitting behind
through communication with the specified STUN server. If the detected NAT
is a Full Cone, Restricted Cone, or a Port-Restricted Cone, the HT386 will
attempt to 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 HT386 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.
IP address or Domain name of the STUN server.
(in Hexadecimal Representation)
ica)
Yes (reverse polarity upon call establishment and
(URI or IP address)
22
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