Operation Manual
Operating modes and functions
ELSA LANCOM Wireless
67
English
on a call-by-call basis. The normal telephone number is dialed after the network
identification prefix.
Unfortunately, the most inexpensive rates vary from provider to provider depending on
the time of day and region. In the morning Provider 1, Provider 2 in the afternoon and
possibly Provider 3 for international calls. To always have the most economical
connection for telephone calls, surfing the Internet or transferring data to other networks,
it would be necessary to decide which provider is the least expensive before each
connection. An
ELSA LANCOM Wireless
does this for you. Least-cost routing (LCR) is
the function for this task. You define once which providers have the most favorable
charges for your purposes, and the device automatically selects the most economical
provider for you, regardless of whether you are using the router, the
LANCAPI
etc).
Function of the
ELSA LANCOM
least-cost router
The LCR analyzes the digits dialed by the router or
LANCAPI
.
The unit checks the LCR table after each digit for a correspondence to a previously dialed
number (prefix). If a suitable entry is found for which the current time and date is valid,
the network identification prefix for the connection will be prepended to the prefix. The
number is not sent out to the exchange until it has been completed in this manner.
The LCR also requires the following information:
쮿
A dialing prefix (area code) to determine which calls are relevant for the router.
쮿
One or more network identification prefixes to determine the provider to be used for
this prefix.
쮿
The days of the week and holidays for which the entry is valid.
쮿
The time of day for which the entry is valid.
Initial tests
It's possible to achieve a considerable savings with only a few entries. We would like to
describe the programming of the LCR using this simple example.
You know, for example, that considerable savings can be had by selecting a provider on
a call-by-call basis for long distance and international calls. You have also checked the
rates of a number of call-by-call (CbC) providers and selected the most economical ones
The first entries in the LCR table will then appear as follows:
Dialing prefix CbC network prefix Days of week Time of day
0117 4 Sat + Sun 0:00 AM to 11:59
PM
0117 0800-PIN Mon + Tue + Wed + Thu + Fri 8:00 AM to 6:00
PM
00 4 Sun 0:00 AM to 11:59
PM