Owner`s manual

MT56DSU2 Owner’s Manual
82017502 28
DDS MULTIPOINT (POLLED) APPLICATION
Since your Central Office (CO) equipment must include “Multipoint Junction Units” (MJU5) and other
special arrangements for this type of service, you may need to coordinate efforts with your network service
provider.
The MultiDSU56K at the host end is the Master Station (also called the “Control Station”), which typically
has RTS forced on. The attached MultiDSU56Ks are called “remote stations” and have RTS controlled by
the DTE.
Multipoint DDS provides communication between a control station and two or more remote stations. All
data transmitted by the control station is sent to each remote station. For data transmitted from the remote
stations, the MJUs combine bit streams from the remote stations into a single, serial bit stream sent to the
control station. All stations on the same multipoint circuit must run at the same bit rate (any of the DDS
customer service rates).
The figure below shows a typical Multipoint (Polled) application.
DDS Network
with
Multipoint
Equipment
DTE
DTE
DTE
DTE
MultiDSU56K
(“Master Station”)
Host with
Database
Application
MultiDSU56K
(“Remote Station”)
MultiDSU56K
(“Remote Station”)
MultiDSU56K
(“Remote Station”)
MultiDSU56K
(“Remote Station”)
Figure A-2. DDS Multipoint Polled Application