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Setting Up Additional Service Providers 59
6
In the Alternate Number field, you can either enter an alternative number or, if
required by your ISP, a second telephone number to establish a Multilink PPP call.
To enter a second, alternative telephone number for your ISP that will be
automatically dialed (if, for example the first number is busy) select
Alternate
and
then enter the telephone number in the Number field.
Some ISPs may require that you dial two telephone numbers to establish a
Multilink PPP call. If so, select
Multilink
from the drop down list box and then enter
the telephone number in the Number field.
7
Under Security, enter your User ID and Password.
8
Under DNS IP Address(es), if your ISP uses static IP addresses (that is, your ISP does
not supply these addresses when a dial up connection is established), enter the
primary DNS IP address of your ISP in the
Primary field. If there is a secondary
address, enter it in the Secondary field.
9
Specify Bandwidth Allocation.
■
Use one B channel:
When selected, one B channel is used to connect to
this service provider.
■
Add second B channel as required:
When selected, the second B channel
is added when the first B channel reaches a certain threshold. The threshold
default is 60%. To change the threshold default, refer to “Changing Data
Call Parameters.” The second B channel is temporarily removed when you
place or answer another call.
■
Use two B channels:
When selected, both B channels are used to connect
to this service provider (that is, always use Multilink PPP). Note that this
prevents another call, data or voice to be placed or received as there is no
available bandwidth (that is, the second B channel cannot be temporarily
removed).
10
Under Miscellaneous, specify the B channel rate or select TollMizer.
Leave the B channel rate set to 64 Kbps unless your telephone company and the
locations to which you will be connecting require 56 Kbps.
TollMizer makes a 56 Kbps data call over a voice circuit, allowing you to save the
typical cost difference between a voice and data call. Note that the destination you
are calling must also support this feature (also referred to as Switched 56
Permissive or Data Over Voice). Check with your telephone company and ISP to
make sure that they support TollMizer.
11
Under Miscellaneous, leave the default, NAT enabled, unless you are certain you
want to disable it. With NAT enabled, the ISDN LAN Modem translates IP
addresses between the computers on the LAN and the ISP, allowing all LAN users
access to a single ISP. Only disable NAT when static IP addresses are provided by
your ISP for users on the LAN.
12
Under Miscellaneous, if the ISP to which you want to connect does not assign a
dynamic IP address and wants you to use a static IP address, enter the IP address
and the subnet mask in the WAN link fields. Otherwise, leave these fields empty.
13
Under Miscellaneous, indicate whether or not you would like to use compression
when transferring data by selecting the appropriate radio button.
14
For Allow Automatic Call Initiation, leave the default setting, which is
Yes
.
If you select
No
, you will have to manually launch a call to this service provider
every time you want to connect. You may want to set this field to
No
if your calls