Paradyne 392xPLUS operation manual DialStandbyTime 10min Nxt 10min 5min 1min

COMSPHERE 392xPlus Modems

Table 4-11

(4 of 5)

Leased Line Configuration OptionsÐ Singleport Mode A

SpecialStandby: Disable

Nxt Disable Enable

This configuration option only appears when Automatic Dial Standby is configured for 15min, 1hr, 4hr or Test(2min) and Leased mode is configured for Originate mode,

or

when Automatic Dial Standby is configured for Adv15min, Adv30min, Adv1hr or TestAdv(2min).

Special Standby. Used to support Automatic Dial Standby configurations when a third modem is used for the dial backup. When the leased line is restored, the Special Standby configuration allows the leased-line modems to return service to the original point-to-point modems.

NOTE: When the modems are set for normal dial standby (15min, 1hr 4hr, or Test(2min)), the Special Standby configuration option allows the originate modem to test the lease connection in one direction before interrupting primary data on the dial lines.

NOTE: When the modems are set for advanced dial standby (Adv15min, Adv 30min, Adv1hr or Adv Test(2min)), the Special Standby configuration option allows a non-interruptive algorithm to test the original point-to-point lease connection in both directions before interrupting primary data on the dial lines.

NOTE: For proper operation of Special Standby, ensure that the Automode configuration option is set to Enable.

The AT command is S-Register S98=n, where n is 0 for Disable and 1 for Enable.

DialStandbyTime: 10min

Nxt 10min 5min 1min

Dial Standby Time. Selects the amount of time that a dial circuit is held after returning to the leased lines.

CarrierOn Level: ± 43dbm

Nxt ± 43dbm ±26dbm

Carrier On Level. Controls the carrier detection threshold for leased lines. When the power level of the receive carrier signal drops 2 dBm below this level (either ±26 dBm or ±43 dBm), LSD turns OFF. When the carrier signal is greater than this level, LSD turns ON.

For TMp Control, ±26dbm is the factory default.

The AT command is S-Register S48=n, where n is 0 for ±43 dBm and 1 for ±26 dBm.

V27bis Train: Short

Nxt Short Long

This configuration option only appears when Leased-Line Rate is configured for V27bis.

V.27bis Train. Controls the train time for V.27bis operation.

The AT command is S-Register S70=n, where n is 0 for Short and 1 for Long.

V29 TrainOnData: Disable

Nxt Disable Enable

This configuration option only appears when Leased-Line Rate is configured for V29.

V.29 Train On Data. When enabled, the modem receiver can train based upon the incoming data or a training sequence from the distant modem. This function is necessary for a remote (tributary) modem in a V.29 multipoint network and is recommended for a control modem as well.

The AT command is S-Register S92=n, where n is 0 for Disable and 1 for Enable.

V29 Retrain: Enable

Nxt Disable Enable

This configuration option only appears when Leased-Line Rate is configured for V29.

V.29 Retrain. When enabled, the modem transmits a training sequence whenever it receives one. This configuration option should normally be disabled for control modems.

The AT command is S-Register S93=n, where n is 0 for Enable and 1 for Disable.

4-56 November 1996 3920-A2-GN31-30