Comtrol RocketPort USB Serial or Modem Hub Driver Installa Manual de usuario descargar pdf (Pagina 24)

Troubleshooting 24

1. Select Test Terminal from the Comtrol program group. The program window appears:

2. Select Open Port from the Port menu. A list of possible COM port numbers appears.

3. Select the COM port you want to test, for example, COM5.

Note:

Make sure the loop button is off for the following tests. See the online help for more details.

Test 1: Verify that the modem responds

1. Type

atz

. This should return an OK.

2. Type

at&v

. This should display the modem configuration.

Test 2: Test calls from the modem to a telephone.

1. Connect the modem to a phone line.

2. Type

atdt

phonenumber (where the phonenumber is an ordinary telephone). The telephone should ring.

Test 3: Call from modem to modem.

1. Type

+++ath

to hang up.

Note: Make sure that data sending is done before and after using the +++ command.

2. Connect two modems to phone lines, open two Test Terminal sessions, and use one modem to call the

other. Send typed characters from one modem to the other.

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Comtrol RocketPort USB Serial or Modem Hub Driver Installa Manual de usuario Pagina 24