Grandstream Networks Handy Tone 386 user manual Grandstream Networks, Inc

HandyTone-386 User Manual Grandstream Networks, Inc.

User ID is Phone Number

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

If the HandyTone ATA has an assigned PSTN telephone number, this field should be set to “Yes”. Otherwise, set it to “No”. If “Yes” is set, a “user=phone” parameter will be attached to the “From” header in SIP request

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.

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