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Black Box MD885C-R2, MD885AE-R2, MD885A-R3, 34336 user manual Modem

Models: MD885C-R2 MD885A-R3 MD885AE-R2 34336

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Modem 34336

Normally, as part of the V.32 handshake, the calling modem begins sending a sequence to the answer modem while the answer modem is still sending answer tone. In this case, there is no T1 timer. However, the V.32 recommendation allows for a T1 time of up to 3 seconds, meaning that the answer modem may be set to wait (before falling back) for up to 3 seconds.

The B option is available for all modes. If the Modem makes a connection at one of the V.32 rates (4800 to 14,400 bps) or V.22 bis rate (2400 bps), it can request that the remote modem send a retrain sequence.

•ENABLE — The modem requests a retrain sequence.

•DISABLE — The modem will not request a retrain sequence.

The Answer/Originate Default option is available for Hayes and Leased modes (and manual originate/answer dial operation). It sets the Modem to default to either answer or originate status.

•ANSWER — Sets the Modem to answer mode.

•ORIGINATE — Sets the Modem is set to originate mode.

The Answer Tone option is available for Hayes, V.25 bis, and Dumb modes. The answer-tone frequency is selectable only if the maximum data rate is set to 1200 bps (via the SPEED LIMIT menu), in which case the answer tone can be set to either 2225 or 2100 Hz. Otherwise, the answer tone frequency is 2100 Hz (the standard for V.32 operation). In general, this setting should not be changed (even for fallback with Bell standard modems, which use a 2225-Hz answer tone).

The Front Panel Control option is available for all modes. It controls the use of the front panel. If disabled, the front panel of the modem will not respond to changes to the Setup menus. Front Panel Control is a security feature helpful in situations where it is undesirable for the modem’s configuration to be changed.

Two speaker options are available: Speaker Control and Speaker Volume.

The Speaker Control option is available for all modes.

•ON — Speaker is on during the full modem handshake process and while the unit remains on-line.

•OFF — The speaker is off; the call cannot be audibly monitored.

•ON TILL CD — Speaker remains on until a carrier signal (CD)

is detected.

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Black Box MD885C-R2, MD885AE-R2, MD885A-R3, 34336 user manual Modem
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MD885C-R2, MD885A-R3, MD885AE-R2, 34336 specifications

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