MWG1000 Series User Manual
Http://www.maxincom.com
45 / 55
devices do not support this (especially if one of them is
behind a NAT). The default setting is YES
Audioprefcodec
Once enabled,When the caller call out via SIP/SPS
trunks,the audio codec of calling channel whould be
selected in preference.
usereqphone
This provider requires,User=phone on URI
User agent
To change the user agent parameter of asterisk,
the default is “MWG1004”, you can change it if needed.
3.10.1.2 Network Configuration
Note: Configuration of this section is required when using remote extensions
generally.
Figure 3.10.1.2 network configuration
Table 3.10.1.2
Parameters
Description
Enable STUN
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 a call.
External IP
Address
The IP address that will be associated with outbound SIP
messages if the system is in a NAT environment.
External
Refresh
Interval
Used to identify the local network using a network
number/subnet mask pair when the system is behind a