Lucent Technologies 555-661-150 manual UDP Routes, Facility Restriction Levels

MERLIN LEGEND Communications System Release 6.1	Issue 1
Network Reference 555-661-150	August 1998
5 Network Management
Uniform Dial Plan Routing	Page 5-26
UDP Routes	5

In UDP routing, routes 1–4 are associated with patterns, which are assigned first by associating non-local dial plan extension ranges with those patterns. You can use up to 20 patterns and up to 50 extension ranges. A pattern can be assigned to as many extension ranges as necessary. Each route has various attributes (FRL, digit absorption, and so on) for call delivery.

Route 1 has the highest priority and should specify a pool of tandem PRI trunks if such facilities are connected to the system. Pools should contain the same type of facilities. If a caller uses Callback, the call queues for Route 1 only. Usually, PSTN routes should have the highest FRL numbers, which are the most restrictive and are only included for use by particular users when tandem trunk pools are unavailable.

In many cases, only one pool may be needed. However, multiple pools can help prioritize certain types of calls and maximize the use of shared facilities.

You can use inspect to review existing routes.

Valid Entries

Pattern (1–20)

Routes (1–4)

Facility Restriction Levels 5

FRLs assigned to extensions apply not only to ARS calls but also to calls for non- local UDP extensions connected by private trunks to your local system. Use care in assigning FRLs both to extensions and to UDP routes. For example, if a user must be restricted from toll calls on your local system, you may need to plan UDP routes’ FRLs to be unrestricted, so that the user can reach necessary non-local UDP extensions.

Use the following guidelines to assign a FRL to each UDP route. The FRL ranges from 0 (least restrictive) to 6 (most restrictive). When a user makes a call that requires UDP routing, the user’s extension FRL (or in some cases, remote access barrier code FRL) must be equal to or higher than the route FRL in order for the call to go through. When a call arrives at a remote private networked system, the remote access default COR FRL specified in the remote system for the type of tandem trunk carrying the call (tie or non-tie) replaces the user’s extension FRL in the comparison to the UDP or ARS outgoing route FRL. For an extension FRL or default COR FRL, a value of 0 is the most restrictive, and a value of 6 is the least restrictive. The interaction of FRLs is described in “Facility Restriction Levels and Remote Access” on page 5.

The factory setting for each FRL is 3.