Port – Verilink 9000 Series (34-00271) Product Manual User Manual

Page 174

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152

C

HAPTER

9: U

NISYS

U

NISCOPE

Port.

Enter the port number where the source stations reside.

After these fields have been filled, press F10. This re-displays the port using the
copied values.

Baud Rate

This is the rate, in bits per second, at which the port communicates. The selections
are 300, 1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 24000,
28800, 38400, and Auto.

Bits per Character

The number of valid data bits in each byte is represented in this field. The
selections are 7 and 8.

Parity

Parity selections can be Odd, Even, or None. Setting the parity of a byte of data is
done by marking the most significant bit (MSB) either on or off so that the total
number of on bits is either an odd or even number. Odd and even parity are used
when the Bits per Character parameters is set to 7. When 8 bits per character is
selected, set the parity to None. Use Odd parity on sync lines, and Even parity on
async lines. The selections are O (odd), E (even), and N (none).

Message Buffer

The message buffer represents the number of internally transferred bytes the port
accumulates before beginning to transmit the data to the attached device. If the
current port speed is less than or equal to the speed of the port transferring the
data, this parameter can be set to 100. If the current port speed is faster than that
of the transferring port, this parameter must be greater than the largest possible
message size.

This acts as a fast-output option. When set to 100, the message is sent to the terminal
device while it is still being received from the host. When set to a value greater than
the actual message size, the entire message is received from the host before being
sent to the terminal device. If any terminal on this port is linked to a port using a
transport protocol such as X.25 or Frame Relay set this parameter to 4096. The
selections are 10 to 4096.

Interface

This parameter determines the interface type of the port. The selections are S
(sync), A (async), T (TDI), and V (V.35).

Algorithm

Three algorithms may be selected for the Uniscope terminal port. The first
selection is broadcasts (B). The second selection is for group poll operation (G)
and the third specifies specific poll (S). The selections are B, G, and S.

Termination

The termination parameter relates to the 9000-series product only. It sets the port
for DCE (data communication equipment) or DTE (data terminal equipment).

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