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Configuring an external modem, E-11, Configuring an external – Paradyne 9788 User Manual

Page 315: Modem

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E. Connectors, Cables, and Pin Assignments

9700-A2-GB20-20

December 2002

E-11

Configuring an External Modem

Procedure

To configure an external modem:

1. Disconnect the asynchronous terminal from the standard cable.

2. Reconnect the crossover cable to the external modem. See

DB25-to-DB25

Crossover Cable

on page E-12 or

DB9-to-DB25 Crossover Cable

on

page E-13 for a drawing of the cable.

3. Enable auto-answer on your modem, and configure it to use the following

LSD, DSR, CTS, RTS, and DTR control leads.

See the table below for AT D0 command strings. Use the following command
string:

AT &C0 &D2 &S0 &R1 \D0 S0=1

Enter AT Command . . .

To configure the modem to . . .

&C0

Force LSD on

&D2

Drop the connection when the unit drops DTR

&S0

Force DSR on

&R1

Ignore RTS

\D0

Force CTS on

S0=1

Automatically answer incoming calls

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