Meridian Link/Customer Controlled Routing Installation And Upgrade Manual page 575

Operations, Administration and Maintenance (OA&M)
overlay
private branch exchange (PBX)
profile
QPC513
route
The tools, typically software, that enables a technician to configure,
administer, and maintain a system.
Generally used to describe some software that is not always memory
resident; it is loaded on request. In the Meridian 1, most configuration,
administration and maintenance functions are done from a tty terminal using
various overlays. Each overlay is designed for a specific task: for example,
Overlay 10 is used to configure PBX (500/2500) sets, 11 to configure
proprietary sets, Overlay 23 to configure ACD queues, Overlay 17 to
configure I/O ports, Overlay 15 to configure customer data, Overlay 48 to
configure link maintenance, etc. The Meridian 1 currently has some 100
overlays. An overlay is loaded from the tty by typing LD nn where nn is the
overlay number. Overlays are exited by typing ****.
A CPE telephone switch, typically used by a business to service its internal
telephone needs. A PBX typically offers many more advanced features that
are generally available on the public network. A PBX interfaces with the
public network central office via circuits known as trunks. PBX is also used
as a name for a family of telephone sets: 500 (rotary) and 2500 (touch-tone)
sets.
All CCR users have a profile that defines their level of access to the system.
A Nortel Meridian 1 circuit pack, also known as ESDI (Enhanced Serial
Data Interface). This card supports internal communications between the
Meridian 1 CPU and other components within the Meridian 1 system.
Route usually refers to a trunk route. This is a collection of trunks that share
many common characteristics, such as trunk type (for example, DID). On
the Meridian 1, trunks must be associated with (belong to) a trunk route.
Routes are configured in Overlay 16 on the Meridian 1.
Meridian Link Release 5C/CCR Release 3C Installation and Upgrade Guide
List of terms 557