Grandstream Networks 200 사용자 설명서

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Use DNS SRV: 
Default is No. If set to Yes the client will use DNS SRV to look up 
server. 
User ID is Phone 
Number 
 If the BudgeTone 200 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 
SIP Registration 
This parameter controls whether the BudgeTone 200 needs to send 
REGISTER messages to the proxy server. The default setting is “Yes”.  
Unregister on 
Reboot 
 Default is No. If set to yes, the SIP user’s registration information will 
be cleared on reboot. 
Register Expiration  This parameter allows user to specify the time frequency (in minutes) 
that BudgeTone 200 refreshes its registration with the specified 
registrar. The default interval is 60 minutes (or 1 hour). The maximum 
interval is 65535 minutes (about 45 days). 
Local SIP port 
This parameter defines the local SIP port the BudgeTone 200 will listen 
and transmit. The default value for Account 1 is 5060. It is 5062, 5064, 
5066 for Account 2, Account 3 and Account 4 respectively. 
SIP T1 Timeout 
T1 is an estimate of the round-trip time (RTT) between the client and 
server transactions. If the network latency is high, select bigger value 
for reliable usage.  
SIP T2 Interval 
This element sets the value of the SIP protocol T2 timer, in seconds. 
Timer T2 defines the retransmit interval for INVITE responses and non-
INVITE requests. The SIP protocol default value is 4 seconds. 
NAT Traversal 
This parameter defines whether the BudgeTone 200 NAT traversal 
mechanism will be activated or not. If activated (by choosing “Yes”) 
and a STUN server is also specified, then the BudgeTone 200 will 
behave according to the STUN client specification. Under this mode, 
the embedded STUN client inside the BudgeTone 200 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 BudgeTone 
200 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 BudgeTone 200 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. 
Subscribe for 
MWI: 
Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting 
Indication will be sent periodically.