Viking Components 56K User Manual page 28

VIKING COMPONENTS 56K EXTERNAL MODEM USER'S GUIDE
General (Continued)
Problem
No Dial Tone message
How can I change the speaker vol-
ume on the modem?
Solution
• Are all of the cable connections secure?
• Is the phone line in use by someone else?
• Are you using a standard analog phone line?
• Test the line by connecting a standard phone and listen-
ing for a dial tone.
• Change software to use new modem.
• The volume can be changed through AT Commands. Use
the following AT Commands to change the volume levels:
ATL0 Set lowest speaker volume
ATL1 Set low speaker volume
ATL2 Set medium speaker volume
ATL3 Set high speaker volume
ATM0 Turn speaker off
ATM1 Turn speaker on during handshaking and while
receiving carrier
ATM2 Turn speaker on during handshaking and while
receiving carrier.
ATM3 Turn speaker off during dialing and receiving
carrier and turn speaker on during answering.
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Chapter 5