CXR AJ 2885P Manual de usuario descargar pdf (Pagina 16)

User's Manual V34bis Fax-modem - AJ 2885 P

AJ 2885 P - Pa

e 16

Power On:

Inserting the modem card connects it to the power supply of the rack. Power-on is carried out by

the power switch located at the rear of the rack.

Make sure the front panel screws are well fixed onto the chassis so that the modem card is well

connected to the AMS back plane.

2.3. Switch and Jumper settings

2.3.1. Dumb mode : J6 jumper

When set in the ON position, this jumper disables the AT and V25Bis commands. This may be

interesting for synchronous connection, or to protect the configuration of the modem set for

answer mode.

2.3.2. SW5 switch

This switch does not apply on the FT model.

The following data terminal signals can be forced ON through these four switches :

Switch Signal On position effect AT Command

SW5-1 DTR The 108 – DTR signal from the terminal is ignored AT &D0

SW5-2 CD The modem provides a permanent 109 – CD signal AT &C0

SW5-3 DSR The modem provides a permanent 107 - DSR signal AT %D0

SW5-4 CTS The modem provides a permanent 106 – CTS signal AT %C0

2.3.3. V11 – V28 terminal interface : J9 – J21 jumpers

This switch does not apply on the FT model.

The J9-J21 jumpers set the data terminal interface for :

• V24-V28 or RS232 : jumpers in the 1–2 position

• V11 (X21 / V35) : jumpers in the 2–3 position

In this case, jumpers J19, J20 and J21 connect a 560 Ohm impedance on the V11

receivers the the TD, XCLK and DTR signal respectively.

These jumpers are described in a dedicated appendix at the end of this manual.

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CXR AJ 2885P Manual de usuario Pagina 16