Westermo TD-23 Manuel d'installation télécharger pdf (Page 8)

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Typical TD-32 line connections

4-position

screw terminal

Handshaking

Leased line 2-wire

Telephone

Exchange

Telephone

Exchange

Dial up line 2-wire

Telephone

modem

4-position

screw terminal

4-position

screw terminal

RJ-12 kontakt

Leased line 4-wire

Telephone

Exchange

Telephone

Exchange

Dial up line 2-wire

Telephone

modem

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9

The TD-32 is delivered with a factory setting for “hardware hand-

shake” with RTS-CTS which means that if only TX, RX and GND

are connected no data will be sent on the receiving modem’s RS-232

connection unless RTS is high. The problem can be solved by placing

a jumper between RTS (screw terminal no 6) and for example DSR

(screw terminal no 2) or by disabling the handshake with the command

AT&K0, or with switch 3:2 (switch settings).

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