Multitech BL-Series Manuale Utente Scaricare il pdf (Pagina 47)

JUMPER SETTINGS AND MODEM SET-UP

4.4.1. Dial Up Mode Working

Connect terminal to modem, power on modem/terminal, issue AT commands

to achieve the following :

• Restore factory default settings

• Set serial baud rate to 9600

• Set modem baud rate to 9600

• Disable flow control

• Set S register value to indicate after how many rings modem has to

answer (Ex 1,2,3 …)

• Set the jumper settings if any for dial up working

Test set may be made as in Fig. 4.1

To dial remote modem type ATDP followed by called Modem Telephone

Number and wait for connect message on terminal, CD lamp to glow on

modem.

4.4.2. Leased Line Working

In leased line working, two modems are connected by external plant cable

pair or 64 kbps data circuit. Configure the modems as given below using AT

commands and jumper settings.

Configuring Modem

IOP and Modem Configuration

1. Configure modem as answer modem

2. Configure modem for power on 2 wire leased line working

3. Disable flow control

4. Disable DTR (Data Terminal Ready) Signal

5. Set serial baud rate and modem baud rate to 9600 bps

6. Disable commands echo

RSU end (Terminal End) Modem Configuration

1. Configure modem as originate modem

2. Configure modem for power on 2 wire leased line working

3. Disable flow control

RSU INSTALLATION MANUAL 45

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Multitech BL-Series Manuale Utente Pagina 47