Instruction manual

1-2. TYPICAL APPLICATIONS AND SYSTEM DESIGN CONSIDERATIONS
Typical
Applications
This section provides examples of applications that use the specific capabilities of
the DV-MUX3.
Typical DV-MUX3
Application in an SNA
Link
Figure 1-1 shows a typical application for a DV-MUX3. This application shows
how an organization can use the DV-MUX3 to connect privileged telephone sub-
scribers located in another city, e.g., at a main branch office, to the PABX serving
the head offices. This arrangement allows those remote subscribers to use all the
features, speed, and convenience available to local subscribers of the main office
PABX without the expense of leasing a dedicated voice line or allocatinga full data
channel for this purpose.
Figure 1-1. Typical DV-MUX3 Application in an SNA Link
In this example, the connection is made by sharing an already existing SNA link,
based on 19.2 kbps modems operating over a telephone line. This link is being used
to connect the IBM 3174 Cluster Controller located at the branch office to an IBM
37X5 Front End Processor located at the main offices.
The DV-MUX3 is inserted between the IBM 3174, respectively IBM 37X5, and
the corresponding modem:
• The IBM 3174 and IBM 37X5 are connected to the data channels of the two
DV-MUX3 units.
• One local subscriber line of the PABX located at the main offices is con-
nected to the first voice channel of the DV-MUX3. This voice channel uses
an FXO interface.
TYPICAL APPLICATIONS AND SYSTEM DESIGN CONSIDERATIONS
DV-MUX3 Installation and Operation Manual 1-7