Operation Manual
Operating modes and functions
ELSA LANCOM Wireless
68
English
These four entries mean that all connections to Bristol (or other numbers with the prefix
'0117') on weekends will be made using the provider with the network prefix '4'.
Between 8:00 AM and 6:00 PM on weekdays, these calls will be made using the provider
with the network prefix '0800'. International calls on Sundays will be made using the
provider with the network prefix '4'.
For advanced users: Systematic use of the LCR
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The first example has shown how connect charges can be reduced with only a few
entries. If you would like to put the least-cost router to optimal use, detailed
information is required with regard to the connect-charge structure of the call-by-
call providers. Next, decide how these rates and rate zones can be best organized
in the
ELSA LANCOM Wireless
LCR table. A variety of approaches are possible:
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Obvious options for saving telephone charges can be entered directly:
– '00' for international connections
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Entering a single '0' will initially reroute all numbers starting with a zero. However,
as neighboring local exchanges may also start with a '0' and yet be billed as local
calls, their prefixes should be listed separately to prevent these calls from being
rerouted. This strategy should also be applied to special prefixes such as '0800' etc.
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Another strategy aims to achieve the highest possible level of control over the
routing activities. Start with the prefixes of the local area and then define the next
larger zones. The closer, and thus less expensive, tariff zones are set with longer
prefixes, the remaining more distant prefixes with a smaller number of digits.
This setting can be expanded and refined as required. Here are a number of further ideas
for your consideration:
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An area code is required to dial a number of local exchanges, but these calls may be
billed as local. If these areas have been routed using a general entry, you could
route the area codes that are billed as local calls via the network prefix of your
telephone company. If the entry for the network prefix is left empty, the entry will
not be rerouted.
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Perhaps a large number of your ISDN connections go to the same area codes. If
most of your remote stations are in Bristol, for example, you can reach these
numbers using a specific provider.
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Study the various tariff zones. Check the Internet for the assignments of area codes
to zones. In Germany, for example, this is possible at: 'http://indigo.ie/~gkernan/'.
Once you have found the area codes that you would like to reroute, you can start
assigning them to call-by-call providers. For this, you need the current rates of as many
telephone providers as possible. These can also be found in the Internet. Addresses
such as 'http://indigo.ie/~gkernan/' in the UK, for example, contain complete, up-to-date
listings for all types of connections. With this information on hand, you can now begin
feeding your least-cost router...