Grandstream Networks HandyTone-286 User Manual page 26

HandyTone -286 User Manual Grandstream Networks, Inc
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NAT Traversal This parameter defines whether the phone NAT traversal mechanism will be
activated or not. If activated (by choosing "Yes") and a STUN server is also
specified, then the phone will behave according to the STUN client
specification. Under this mode, the embedded STUN client inside the phone
will attempt to detect if and what type of firewall/NAT it is behind by sending
appropriate request to the specified STUN server.
If this field is set to "Yes" with no specified STUN server, then the phone will
only periodically (every 20 seconds by default) send a blank UDP packet (with
no payload data) to the SIP server to keep the mapped port open on the NAT.
keep-alive interval The HandyTone-286 sends a UDP package to the SIP server periodically in
order to keep the port open on the router. This parameter defines the interval
time that HT286 send the UDP package. The default setting is 20 second.
Use NAT IP NAT IP address is used in SIP/SDP message. Default is blank.
Proxy-Require SIP Extension to notify SIP server that the unit is behind the NAT/Firewall.
SUBSCRIBE for Default is "No". When set to "Yes" a SUBSCRIBE for Message Waiting
MWI Indication will be sent periodically
Offhook This parameter allows the user to configure a User ID or extension number to
Auto-Dial be automatically dialed upon offhook. Please note that only the user part of a
SIP address needs to be entered here. The phone will automatically append the
"@" and the host portion of the corresponding SIP address.
Enable Call Feature Default is YES. If set to "Yes", call features are supported locally, such as call-
waiting, transfer, 3-way conference, etc.
Disable Call Default is No.
Waiting
Send DTMF This parameter specifies the mechanism to transmit DTMF digit. There are 3
modes supported: in audio which means DTMF is combined in audio signal
(not very reliable with low-bit-rate codec), via RTP (RFC2833), or via SIP
INFO.
This parameter sets the payload type for DTMF using RFC2833
DTMF Payload
Type
Send Flash Event Default is NO. If set to yes, flash will be sent as DTMF event.
FXS Impedance Selects the impedance of the analog telephone connected to the Phone port.
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