Welltech SIPPBX 6200A User Manual
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option will provide music to the calling party as Ring Back tone
until the call was answered.
Call Monitor Refresh SIPPBX 6200A has call monitor function. The call situation will
be refreshed by the refresh times. Default is 30 seconds and
user can change it here.
RTP Timeout
It terminates a call if no RTP data received within the time
specified.
Video Support
This field will enable video call with H263 pass-through or
MPEG4 pass-through.
Video Format
Choose one option to Video Format. Provide drop-down
options: H263 pass-through or MPEG4 pass-through.
SRVlookup Support
Enable or disable SRV lookup. DNS SRV is a way of setting up a
logical, resolvable address where you can be reached. This
allows calls to be forwarded to different locations without the
need to change the logical address, but your DNS Server must
support it as well. If you are not sure, please disable it. This
option is Disable, Enable by default.
Invalid Number
Support
Normally, a busy tone will be heard if caller dial to a non-exist
number. Enable this option, the caller should hear an
announcement to notify that this number is not existed.
Behind NAT
Behind NAT
If your SIPPBX 6200A is installed behind NAT, we strongly
suggest you to enable Behind NAT to avoid some unexpected
issues, such as “one way voice”.
External IP
If you enter External IP address, SIPPBX 6200A will take that IP
address as its argument. If SIPPBX 6200A is behind NAT, the
SIP header will normally use the private IP address assigned to
the server. The remotely device does not know how to route
back to this address; therefore, it must be replaced with a
valid, routable address.
Secondary External
IP
This should cooperate with Default Gateway Backup in Network
page. When Default Gateway Backup is enabled, the SIPPBX
6200A will auto switch the default gateway to secondary one if
primary default gateway is broken. The External IP is not
functional when Backup Default Gateway is chosen. So you
must enter the Secondary External IP for Backup Default
Gateway.
External Host
External Host takes a fully qualified domain name as its
argument. If SIPPBX 6200A was installed behind NAT, the SIP