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The Teltone Polling Controller and LSS enable businesses using multiple dedicated
telephone lines for short-duration data transfers to save costs through line sharing. In
companies where headquarters regularly poll branch offices for data collection, the
system allows devices, such as modems, to share a phone line at the remote location.

The LSS can also be used by itself, as a standalone unit giving you a flexible,
cost-effective way to consolidate lines. When operating as a standalone unit, calls to the
LSS are routed to the device port without a Polling Controller.

Figure 1 illustrates a typical system application, in which a single telephone line is shared
by four devices: a fax machine receiving automatically routed fax calls, a polled Point of
Sale (POS) server receiving incoming calls, one credit authorization terminal making
outgoing calls, and one telephone for incoming and outgoing calls.

For maximum effectiveness, the Polling Controller and LSS should be used as a system.
The Polling Controller is installed at the central polling location to control access to the
line at the LSS. The LSS is located at the business where lines are being consolidated.
Three versions are available, enabling connection of two, three, or four devices.

The two units communicate across the public switched telephone network (PSTN) to set
up and disconnect calls as well as to determine priorities among devices.

If you select this option, the LSS can be used without a Polling Controller to route calls
using standard DTMF codes. Although not required, a Polling Controller is recommended
for data polling applications.

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