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NAT Traversal
This parameter defines whether the IPS-3101h NAT traversal
mechanism will be activated or not. If activated (by choosing “Yes”) and
a STUN server is also specified, then the IPS-3101h will behave
according to the STUN client specification. Under this mode, the
embedded STUN client inside the IPS-3101h will attempt to detect if and
what type of firewall/NAT it is behind through communication with the
specified STUN server. If the detected NAT is a Full Cone, Restricted
Cone, or a Port-Restricted Cone, the IPS-3101h will attempt to use its
mapped public IP address and port in all the SIP and SDP messages it
sends out.
If this field is set to “Yes” with no specified STUN server, then the IPS-
3101h will periodically (every 10 seconds or so) send a blank UDP
packet (with no payload data) to the SIP server to keep the “hole” on the
NAT open.
Use NAT IP:
NAT IP address used in SIP/SDP message. Default is blank.
TFTP Server
This is the IP address of the configured tftp server. If it is non-zero or not
blank, the IPS-3101h will attempt to retrieve new configuration file or
new code image from the specified tftp server at boot time. It will make
up to 3 attempts before timeout and then it will start the boot process
using the existing code image in the Flash memory. If a tftp server is
configured and a new code image is retrieved, the new downloaded
image will be verified and then saved into the Flash memory.
Subscribe for
MWI:
Default is NO. When set to Yes a SUBSCRIBE for Message Waiting
Indication will be sent periodically.
Offhook
Auto-Dial
This parameter allows the user to configure a User ID or extension
number to be automatically dialed upon offhook. Please note that only
the user part of a SIP address needs to be entered here. The IPS-3101h
will automatically append the “@” and the host portion of the
corresponding SIP address.
Enable Call
Features
Default is No. If set to Yes, Call Forwarding & Do-Not-Disturb are
supported locally
Disable Call
Waiting
Default is Not.
Send DTMF
This parameter controls the way DTMF events are transmitted. There
are 3 ways: 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.
DTMF Payload
Type
.