DESCRIPTION
The Digital Sharing Device (DSD) products consist of 2 and
4 port units. The DSDs provide the network manager with a
cost effective means of expanding existing, leased line polled
networks without adding computer ports or communications links.
With the DSD's, up to four terminals or controllers can share
the same port and communications link using the contention
and control protocols normally resident in the host hardware
and software. Once installed, system and network efficiency
are increased through higher host processor utilization coupled
with the significant decrease in idle time between host /
terminal traffic sessions.
Ideal for synchronous network environments, the DSDs are
protocol transparent at data rates up to 2.048Mbps. Data arriving
at the Master Port is continually broadcast to all Subchannels.
The attached terminal device that raises the RTS control signal
is automatically given control of the DSD until data transmission
is complete. Clocking is accomplished from the attached Modem
(CSU\DSU).
The DSDs incorporate optional Anti-Streaming circuitry. If
enabled, Anti-Streaming will automatically remove a defective
terminal from service if the Data / Control criteria is present
for the user predefined clock selection period.
Housed in a sturdy metal enclosure and equipped with an internal
110/220VAC switch selectable linear power supply, the DSDs
will provide in excess of100,000 hours of reliable service.
The DSDs have a three year warranty and a 24 hour turnaround
on warranty repairs.
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