
COMSPHERE DualFlow Data Service Units
Table
(4 of 4)
DBM Configuration Options
Primary Core:No
Next Yes No Prev
DBM Primary Core. When enabled, the DSU is disabled and the DBM is enabled so that it functions as a V.32 DBM or Switched 56 DBM.
Yes | Ð | Enables the Primary Core so the unit operates like a 3600 Series | |||
No | Ð | Disables the Primary Core so that the DSU function is active. No is the | |||
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| DualFlow DSU. |
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DTRCallCon:Orig for SyBC, Ansr for DiDg and SyBT configurations | |||||
Next | Orig | Ansr | Disab | Prev | |
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Data Terminal Ready Call Control. DTRCallCon uses the state of the DTR lead to control backup. When set to Orig, the DBM originates a backup. When set to Ansr, the DBM only answers a backup call when DTR is active. The DTR lead is ignored when DTRCallCon is disabled.
Orig | Ð | DTR lead is used for outgoing calls. When Orig is selected, the DBM originates (dials out) a backup call |
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| when DTR is raised based upon the number stored in the Backup Directory specified by the Backup Dir |
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| configuration option, and drops the call when DTR goes low. The DBM will try to call the number ten |
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| times, or until TriesTimeOut expires. If Multicall is also enabled, the DBM uses the multiple calling cycle. |
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| (A phone number must have been entered into the Backup Directory. If a call cannot be completed, check |
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| Expanded Health and Status messages.) |
Ansr | Ð | DTR lead is used for incoming calls. When Ansr is selected, the DBM drops a backup call when DTR |
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| goes low or will not answer an incoming call if DTR is low. |
Disab | Ð | Disables DTR Call Control; the state of the DTR lead is ignored. |
EchoCancel:Disab
Next Enab Disab Prev
Echo Cancel. This configuration option is only displayed for a Switched 56 DBM and is required if the Switched 56 kbps network is US SPRINTr or when the network has echo cancellers. Disable this configuration option if the DBM is interfaced to an AT&T Switched 56 kbps
Enab | Ð | Enables Echo Cancel. |
Disab | Ð | Disables Echo Cancel. |
Remot DBM:4-wire
Next 2-wire 4-wire Prev
Remote Dial Backup Module. Specifies the identity of the
| Ð | Originating remote DBM is a | DBM, so the process completes in 460 milliseconds. |
Ð | Originating remote DBM is a | DBM, so the process completes in 3.85 seconds. |
Msg Clamp: Enab
Next Enab Disab Prev
Message Clamping. Controls behavior of the data leads when disruptive diagnostic tests and commands are received from the remote DBM.
Enab | Ð | Received Data (RXD) is held to MARK and LSD is turned Off during diagnostic exchanges. This prevents |
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| diagnostic messages from reaching the DTE interface. |
Disab | Ð | DSU passes diagnostic messages to the DTE interface. Use the Disable setting if the remote DSU is |
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| configured for switched RTS (RTS Control is set to DTE). |
December 1996 |