VigorIPPBX 2820 Series User’s Guide
107
Disable, Dialup 64Kbps, Dialup 128Kbps, Dialup BOD.
PPP Authentication -
It specifies the PPP authentication
method for PPP/MP connections. Normally you can set it to
PAP/CHAP for better compatibility.
TCP Header Compression - VJ Compression
: It is used
for TCP/IP protocol header compression. Normally it is set
to Yes to improve bandwidth utilization.
Idle Timeout -
Because our IDSN link type is
Dial On
Demand
, the connection will be initiated only when
needed.
Bandwidth-On-Demand
(BOD) Setup
Bandwidth-On-Demand is for Multiple-Link PPP \(ML-PPP
or MP). The parameters are only applied when you set the
Link Type
to
Dialup BOD
. The ISDN usually use one B
channel to access the Internet or remote network when you
choose the Dialup BOD link type. The router will use the
parameters here to decide on when you activate/drop the
additional B channel. Note that
cps
(characters-per-second)
measures the total link utilization.
High Water Mark and High Water Time -
These
parameters specify the situation in which the second
channel will be activated. With the first connected channel,
if its utilization exceeds the High Water Mark and such a
channel is being used over the High Water Time, the
additional channel will be activated. Thus, the total link
speed will be 128kbps (two B channels).
Low Water Mark and Low Water Time -
These
parameters specify the situation in which the second
channel will be dropped. In terms of the two B channels, if
their utilization is under the Low Water Mark and these two
channels are being used over the High Water Time, the
additional channel will be dropped. As a result, the total
link speed will be 64kbps (one B channel).
After finishing all the settings here, please click
OK
to save the configuration.
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