Eicon Networks 1530 manual Vhsi Port Menu

VHSI Port Menu

Line Interface

Defines the type of line connected to the VHSI port. Choices:

•Leased: The port is connected to a null-modem cable or a modem that links to a dedicated leased line.

•Dial: The port is connected to a modem that must be dialed to make a connection.

Duplex

Defines the type of device the VHSI port is connected to. Choices:

•Full: The port is connected to a full-duplex device. This is the most common case and is usually the choice for an X.25/QLLC connection.

•Half: The port is connected to a half-duplex device. This is most often used on an SDLC connection.

Multidrop

Defines the type of line connected to the VHSI port: point-to-point or multi-point.

VSHI Interface

Defines the VHSI port interface: RS-232 (V.24) or V.35. Specify ‘Autodetect’ to have the Eicon 1530 detect the type of interface automatically.

Data Encoding

Defines the type of data encoding used on the VHSI port.

This setting must match that of the remote system.

•NRZ: Enable Non Return to Zero encoding. Can be used for internal or external clocking.

•NRZI: Enable Non Return to Zero Inverted encoding. Can be used with internal or external clocking, and INT-DPLL (Internal Digital Phase Lock Loop) or EXT-DPLL (External Digital Phase Lock Loop) with a line speed limit of 19,200 bps.

•FM0: Enable FM0 (also known as biphase space) encoding. Can only be used with INT-DPLL clocking with a speed limit of 38,400 bps.

•FM1: Enable FM1 (also known as biphase mark) encoding. Can only be used with INT-DPLL clocking with a speed limit of 38,400 bps.

Clocking

Defines how the VHSI port is clocked, which controls synchronization and the rate of data exchange on the line.

•EXTERNAL: The port uses the clock supplied by the device it is connected to (DCE) for receiving and transmitting.

•INTERNAL: The port generates an internal clock for receiving and transmitting, and outputs this clock on the interface for use by the device it is connected to (DCE).

•EXTDPLL: The port employs a DPLL that uses a DCE generated clock at 32 (NRZI) or 16 (FM) times the data rate.

•INTDPLL: The port employs a DPLL that uses an internally generated clock at 32 (NRZI) or 16 (FM) times the data rate.

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