Table of Contents
Advertisement
Voice QoS, DSCP Marking: Differentiated Services Code Point (DSCP), it is the first 6 bits in the
ToS byte. DSCP Marking allows users to assign specific application traffic to be executed in priority
by the next Router based on the DSCP value. See Table 4. The DSCP Mapping Table:
Note: To be sure the router(s) in the backbones network have the capability in executing and
checking the DSCP through-out the QoS network.
Advanced – Parameters
VoIP through IP Interface: IP Interface decides where to send/receive the voip traffic; it includes:
ipwan and iplan. Easy way to select the interface is to check the location of the SIP server. If it
locates some where in the Internet then select ipwan. If the VoIP SIP server is on the local Network
then select iplan.
Voice Frame Size: Frame size is available from 10ms to 60ms. Frame size meaning how many
milliseconds the Voice packets will be queued and sent out. It is ideal to have the same frame size
in both of Caller and Receiver.
Dial Plan Priority: Define the priority between VoIP and PSTN dial plan.
PSTN Auto-fallback: Whenever VoIP SIP responses error and error code matching with the codes
in the Edit section, the VoiP calls will automatically fallback to PSTN. In the other word, the call will
be called via the PSTN when VoIP SIP returns an error code.
Click the Edit to add or remove the responses code. To be sure the code is separated by a comma
(,).
For more information about SIP responses codes, please check
to link to
http://voip-info.
org/wiki/view/sip+response+codes
where you can get to know the meaning of each error code.
T.38 Fax Relay: It allows the transfer of facsimile documents in real-time between two standard
Group 3 facsimile terminals over the Internet or other networks using IP protocols. It will only
function when both sites are support this feature and enabled.
83
Advertisement
Table of Contents
