Yeastar Technology TA1600 User Manual page 43

Default Incoming/Outgoing
Registration Time
Register Attempts
Register Timeout
Calling Channel Codec
Priority
Video Support
Max Bit Rate
DNS SRV Look Up
User Agent
2) NAT
Items Description
Enable STUN (Simple Traversal of UDP through NATs) is a protocol for assisting
STUN devices behind a NAT firewall or router with their packet routing.
The STUN server allows clients to find out their public address, the type of
STUN NAT they are behind and the internet side port associated by the NAT with
Address a particular local port. This information is used to set up UDP
communication between the client and the VOIP provider and so establish
TA1600/2400/3200 FXS Gateway User Manual
Default Incoming/Outgoing Registration Time: the
default duration (in seconds) of incoming/outgoing
registration.
The number of SIP REGISTER messages to send to a
SIP Registrar before giving up. The default is 0 (no
limit).
Number of seconds to wait for a response from a SIP
Registrar before classifying the register has timed out.
The default is 20 seconds.
Once enabled, when dialing out via SIP/SPS trunks, the
codec of calling channel will be selected preferentially. If
not, TA FXS Gateway will follow the priority order in
your SIP/SPS trunks.
Support SIP video or no. The default is yes.
Configure the max bit rate for video stream. The default:
384kb/s.
Please enable this option when your SIP trunk contains
more than one IP address.
To change the user agent parameter of asterisk, the
default is "TA FXS Gateway"; you can change it if
needed.
Figure 4-13 NAT Settings
Table 4-7 Description of SIP General Settings
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