Paradyne 392xPLUS operation manual Dial Line Ð Multiport Mode l, Dial Modulation Nxt V34 V32Family

COMSPHERE 392xPlus Modems

Dial Line Ð Multiport Mode l

The Dial Line configuration options are used to configure the modem for operation over dial lines.

Table 4-3 shows each Dial Line configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) on the first line and with all available selections listed on the second line. Following this is a description of the configuration option. Factory default settings are listed in Appendix F.

Table 4-3

(1 of 2)

Dial Line Configuration Options Ð Multiport Mode l

Dial Modulation: V34

Nxt V34 V32_Family

Dial Modulation. Modulation reduces the amount of scrolling necessary to select Dial Line rates by limiting the number of Dial Line Rate configuration options. Only one group of Dial Line rates is displayed depending on the setting of the Dial Modulation configuration option (V.34, V.32bis, and V.32 terbo).

Dial Line Rate: 28800(V34)

Nxt 33600 28800(V34) 24000(V34) 19200(V34) 16800(V34) 14400(V34) 12000(V34) 9600(V34) 7200(V34) 4800(V34) 2400(V34) 19200(V32t) 16800(V32t) 14400(V32b) 12000(V32b) 9600(V32b) 7200(V32b) 4800(V32b)

Dial Line Rate. This configuration option determines the modem's data rate and modulation scheme for operation on dial lines. Online changes do not take effect until a disconnect occurs.

33600, 28800(V34), 24000(V34), 19200(V34), 16800(V34), 14400(V34), 12000(V34), 9600(V34), 7200(V34), 4800(V34), 2400(V34) ± The modem operates using V.34 modulation at the data rate selected.

19200(V32t), 16800(V32t), 14400(V32b), 12000(V32b), 9600(V32b), 7200(V32b), 4800(V32b) ± The modem operates using V.32bis or V.32 terbo modulation at the data rate selected.

Autorate: Enable

Nxt Enable Disable StartAt48 StartAt96

Autorate. Once connected, the modem automatically lowers the line rate if line conditions become impaired. When line conditions improve, the modem automatically shifts up to the highest data rate the line can support. This autorating only occurs between 19,200 bps and 4800 bps during V.32, V.32bis, and V.32 terbo connections, and 33.6 to 2400 for V.34.

Start at 48 and Start at 96 ± Set the maximum connect rate for V.32, V.32bis, and V.32 terbo connections.

V32bis Override: Disable

Nxt Disable 2400

This configuration option is ignored unless Dial Line Rate is 4800(V32b).

V.32bis Override. Activates the Paradyne Point-to-Point Diagnostic 2400 bps modulation. Allows the modem to use a non-standard, point-to-point modulation capable of secondary channel diagnostics while running at 2400 bps.

NOTE: This configuration option must be the same in both the local and remote modems.

4-22 November 1996 3920-A2-GN31-30