Nortel NT1R20, Description

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Page 6 of 290 Description
553-3001-105 Standard 5.00 June 1999
Peripheral equipment
Peripheral equipment circuit cards provide the interface between the network
and connected devices, including terminal equipment and trunks. Functions
performed by peripheral equipment include the following:
— performs initialization and self-test upon power-up
— manages timeslots for line and trunk cards to establish call connections
— provides Card-LAN management information by reporting card and unit
or port status (IPE cards only)
— controls local station dialing and ringing functions
— provides local and remote loopback testing and fault isolation functions
— Provides T1 diagnostic information and fault isolation functions
(NT5D11 only)
Line cards are peripheral equipment circuit cards used to connect the
Meridian 1 switch to terminal equipment such as telephones and modems
over 2-wire (tip and ring) line facilities. The line card (and the terminal
equipment that it connects to) can be either analog or digital in nature. Similar
line facilities are used for both.
Line-side T1 line cards are used to connect the Meridian 1 switch to T1
compatible terminal equipment within the installation. Line-side T1
equipment can include voice mail systems, voice response units (VRUs),
foreign exchange stations (FXS), and key systems such as the Nortel
Networks Norstar.
Trunk cards are peripheral equipment circuit cards used to connect the
Meridian 1 switch to telephone trunk facilities. Trunk lines are always analog
facilities.
Terminal equipment
Terminal equipment includes telephones and attendant consoles. It may also
include equipment such as data terminals, printers, and modems.
Complete details on the architecture of the Meridian 1 switch are given in
Meridian 1 system overview (553-3001-100).