Grandstream Networks HandyTone-488 User Manual page 26

HandyTone-488 User Manual
Early Dial
Dial Plan Prefix
No Key Entry
Timeout
Use # as
Send Key
Use Random Port
NAT Traversal
Keep-alive interval
Use NAT IP:
Proxy-Require
TFTP Upgrade
Server
Subscribe for MWI: Default is No. When set to "Yes" a SUBSCRIBE for Message Waiting
Default is No. Use only if proxy supports 484 response
Sets the prefix added to each dialed number
Default is 4 seconds.
This parameter allows users to configure the "#" key to be used as the "Send"
(or "Dial") key. If set to "Yes", pressing this key will immediately trigger the
sending of dialed string collected so far. In this case, this key is essentially
equivalent to the "(Re)Dial" key. If set to "No", this "#" key will then be
included as part of the dial string to be sent out.
This parameter, when set to Yes, will force random generation of both the local
SIP and RTP ports. This is usually necessary when multiple HandyTone ATAs
are behind the same NAT.
This parameter defines whether the HandyTone ATA NAT traversal
mechanism will be activated or not. If activated (by choosing "Yes") and a
STUN server is also specified, then the HandyTone ATA will behave according
to the STUN client specification. Under this mode, the embedded STUN client
inside the HandyTone ATA 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 HandyTone ATA will attempt to use its mapped public IP
address and port in all its SIP and SDP messages. If the NAT Traversal field is
set to "Yes" with no specified STUN server, the HandyTone ATA 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.
This parameter specifies how often the HandyTone ATA sends a blank UDP
packet to the SIP server in order to keep the "hole" on the NAT open.
NAT IP address used in SIP/SDP message. Default is blank.
SIP Extension to notify SIP server that the unit is behind the NAT/Firewall.
This is the IP address of the configured TFTP server. If it is non-zero or not
blank, the HandyTone ATA will attempt to retrieve new configuration file or
new code image from the specified TFTP server at boot time. It will make up to
3 attempts before timeout and then it will start the boot process using the
existing code image in the Flash memory. If a TFTP server is configured and a
new code image is retrieved, the new downloaded image will be verified and
then saved into the Flash memory.
Indication will be sent periodically.
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