FXS Gateway TA400/800 User Manual
Default Incoming/Outgoing
Registration Time
Default Incoming/Outgoing Registration Time: the
d
efault duration (in seconds) of incoming/outgoing
registration.
Register Attempts
The number of SIP REGISTER messages to send to a
SIP Registrar before giving up. The d
Register Timeout
Number of seconds to wait for a response from a SIP
Registrar before classifying the register has timed out.
The default is 20 seconds.
Calling Channel Codec
Priority
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
Support SIP video or no. The default is yes.
Max Bit Rate
Configure the max bit rate for video stream. The default:
384kb/s.
DNS SRV Look Up
Please enable this option when your SIP trunk contains
more than one IP address.
User Agent
To change the user agent parameter of asterisk, the
default is “TA FXS Gateway”; you can
2) NAT
Figure 4-13 NAT Settings
Table 4-7 Description of SIP General Settings
STUN (Simple Traversal of UDP through NATs) is a protocol for assisting
devices behind a NAT firewall or router with their packet routing.
STUN
Address
The STUN server allows clients to find out their public address, the type of
NAT they are behind and the internet side port associated by the NAT with
a particular local port. This information
is used to set up UDP
communication between the client and the VOIP provider and so establish
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