Specifications

ENT_MLE_015989 - Ed 02_2014-10-13
Chapter 13: Topology – Network Services
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Adaptive routing on switched networks is different than on fixed leased lines.
The private voice topology through the PSTN network can be “logically” defined by creating “VPN
jumps” to link the different nodes to form a fully meshed or partially meshed topology.
Each VPN jump has an associated “cost.”
Before a private network call is set up, the routing service selects the best route, which is the route
with the computed lowest cost.
3.2.9 Alternate route selection (ARS)
Alternate route selection, sometimes referred to as Least Cost Routing (LCR), is used when a user of
an Alcatel-Lucent OmniPCX Enterprise Communication Server system dials an external number (not
internal, not private ABC), for example, a public call or private call (tie lines, etc.).
ARS allows the communication server to select trunk groups and modify dialed digits based on a set
of parameters such as dialed number, entity of the caller, or time of day.
ARS is used in a standalone or networked configuration for optimizing external telecom call costs.
– Direct or indirect multi-carrier access (stand alone, network)
– Forced on net (network)
– Break out (network)
ARS services are transparent to network users. The main characteristics of ARS are:
– 20,000 plus routes (not limited)
– 4,000 route lists
– One to 30 digit numbers analyzed, with management of exceptions
– Number translation (add or delete)
– Overflow to ten different carriers
– Overflow to other carriers according to user’s class of service
– Informative voice prompt if user overflows to an expensive route
– Informative voice prompt if least cost route is unavailable
– ARS is time dependent based on:
o Day of week: 100 weekly tables
o Hour and minute of the day: five daily tables per weekly table
o 24 periods per day