Primary Rate Interface (Pri) Applications - AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual

Applications
Primary Rate Interface (PRI)
Applications
CAUTION:
This section is intended solely as an overview of the application. For
comprehensive information about the use of the application, see the
documentation for the product.
Group IV (G4) Fax
Group IV (G4) Fax is an application that enables the system to use the
advanced Group IV (G4) Fax equipment-one of the new services accessible
with the PRI trunks. Group IV (G4) Fax equipment provides several advantages:
High speed transmission
High quality laser reproductions
High speed, high capacity printing
Virtually error-free transmission
Fax machine can double as an office copy machine.
Documents received using Group IV (G4) Fax equipment are virtually perfect
reproductions of the original document. Therefore, any company involved in
graphic media (such as detailed engineering or architectural drawings or
advertising graphic layouts) are ideal candidates for this application.
Depending on the interface the fax machine has, the Group IV (G4) application
can be connected in three configurations:
Direct RS-232 (the recommended method)
V.35 interface connecting to a UDM RS-232D interface
V.35 interface connecting to a 7500B Data Module
Each of these configurations requires additional equipment.
See Chapter 5, Data, for additional information about Group IV (G4) Fax.
Video Conferencing
Video Conferencing, available with PRI service, enables groups of people in
geographically dispersed locations to meet face to face. They may exchange
information, documents, ideas, and data while employing a variety of visual aids
to support the exchange of this information. Visual aids can include interactive
writing and drawing, prepared text and graphic materials, and precorded audio
and motion video material. Improved technology and superior camera optics
and digital audio signals result in video pictures that are equal to commercial
broadcast quality

Primary Rate Interface (PRI) Applications

4-50