MultiModemDSVD User Guide

3 Operation

To Answer a Voice Call in Speakerphone Mode

1.In the terminal window of your communications application, type AT and press ENTER. The modem will respond with OK.

2.Type AT&F and press ENTER to reset the modem to its default configuration.

3.Type AT#CLS=8#VRN=0#VLS=6S0=0 and press ENTER to initialize the modem for speakerphone mode.

4.To answer a call in speakerphone mode upon receipt of a RING message, type ATA and press ENTER. The modem will report VCON to indicate the speaker- phone is on.

5.To hang up, type ATH and press ENTER.

To Originate a DSVD Call Using the Headset (MT5600DSDV only)

1.In the terminal window of your communications application, type AT and press ENTER. The modem will respond with OK.

2.Type AT&F and press ENTER to reset the modem to its default configuration.

3.Type AT-SMS=1#VLS=5and press ENTER to enable DSVD mode using the head- set.

4.To dial, type ATDTnnnnnnn and press ENTER, where nnnnnnn is the phone num- ber of a remote modem.

5.You will hear some high pitched tones, then a static-like sound after the remote modem picks up your call. You will see a CONNECT response on your terminal. You can then send data to the remote modem and talk to the remote user by speaking into the microphone

6.To hang up, type +++ATH and press ENTER.

Note: If DSVD is enabled, the modems will not connect if the V.34 connect rate is below 12000 bps. The voice link is not maintained in data mode, so if +++ is typed and the user goes back to data mode, a simulated busy is played to both modems to tell the users to place their handsets on hook. If you get an ERROR message when dialing or answering a call, check to make sure the lines are not in the wrong jacks. A DSVD data connection is terminated by dropping DTR (if en- abled by &D2) or by issuing +++ATH.

Multi-Tech Systems, Inc.

25