Lucent Technologies 555-230-024 manual Generalized Route Selection, Facility Restriction Level

Models: 555-230-024

1 362
Download 362 pages 22.37 Kb
Page 177
Image 177

Network Management Features

Subnetwork trunking provides digit insertion, deletion, pauses, and/or wait for dial tone in digit outpulsing, as required, to permit calls to route to or through a remote switch, over tie trunks to a private network switch, or over central office trunks to the serving central office.

Generalized Route Selection

Generalized Route Selection gives you the capability to not only select the opti- mal call routing based on the dialed number, but also select the appropriate facil- ity based on the type of call. Generalized Route Selection enhances Automatic Route Selection and Automatic Alternate Routing by incorporating additional parameters such as the type of call to be used in the decision of how a call is routed.

Different types of calls require the use of different types of facilities. For example, high-speed data calls must use digital facilities, whereas voice and voice-grade data calls can use either analog or digital facilities. DEFINITY ECS uses General- ized Route Selection to differentiate between these and other types of calls and route them on the appropriate trunks. Based on the call types and available trunk facilities, voice and data calls may be routed over different trunk types or inte- grated on the same trunk group. DEFINITY ECS also provides the capability to route calls based on the data format and the need for restricted or unrestricted facilities.

In order to select the appropriate trunking facility for a call, DEFINITY ECS must know the type of call being made. In order to do this, each originating facility such as a telephone or data module has a bearer-capability class assigned. Some originating facilities, such as data modules, may have multiple bearer- capability classes. Each trunk group in the routing pattern is assigned a list of allowed bearer-capability classes. When a user makes a call, the system queries the originating facility for its bearer-capability class and then tries to route the call on a trunk group with a bearer-capability class that matches the bearer-capability class of the originating facility. If an exact match is not found, the system then tries to find a trunk group with a compatible bearer-capability class.

Since the system automatically chooses the right trunk based on the system administration, the DEFINITY ECS system dial plan can be independent of the type of call being dialed. This makes life easier for your system users, who do not have to worry about dialing a different access number for different call types.

Facility Restriction Level

Facility Restriction Levels are used to limit user calling privileges for incoming and outgoing calls. The Facility Restriction Level determines if a call attempt is permitted and which routes can be used or denied in the routing process. Eight levels of Facility Restriction Levels can be assigned to telephones, computers,

555-230-024

Issue 5 January 1998 12-5

Page 177
Image 177
Lucent Technologies 555-230-024 manual Generalized Route Selection, Facility Restriction Level