32 System architecture
with minimum time delay and low phase distort&, a requirement for the
proper transmission of data signals.
Remote Peripheral Equipment (RPE)
In a local operating environment, the peripheral equipment may
be
housed
up to 50 feet from the common equipment. The RPE feature extends this
range to approximately 70 miles between local and remote facilities. This
extension is made possible by converting the multiplexed loop signals to a
form compatible with the commonly used T-l type digital transmission
system.
Any medium conforming to DS-1 format (1.544 Mbps) may be used to link
local and remote sites, including digital microwave radio and fiber optic
transmission systems.
DTVPRI
Allocation of circuit-switched bandwidth may also be made on a network-
loop basis to Primary Rate Access (PRA) or Digital Trunk Interface (DTI)
circuits. These optional services are based on the standard T-l format
(DS-1 24 channel) used in digital transmission networks.
DTI allows for the replacement of 24 conventional analog trunks by a single
T-l digital link. Each of 24 channels provides up to 56 Kbps for voice and
--
synchronous data transmission, or up to 19.2 Kbps for asynchronous data.
Power equipment
Meridian 1 systems feature a modular power distribution architecture which
parallels the modular design concept of the Universal Equipment Module.
Meridian 1 power systems provide the following features:
-
AC-powered and DC-powered system options, providing flexibility to
meet a wide range of customer requirements.
-
A distributed, modular power architecture, with power supplies located
in each Module, rather than in separate, centralized power shelves.
-
All DC systems are available as complete systems, with rectifiers
provided by Northern Telecom, or can be equipped for customer-
provided external power.
System overview 553-3001-100