7
4.5 Verifying Your Connection
Start a communication program and place the computer into terminal mode. Refer
to your computer manual to find out the appropriate command to do so.
Then use the following procedure to verify your installation:
1.
Type
AT[Enter]
If your system is operating properly, your External Modem sends an
OK response to your screen and waits for your next command.
2.
Use your communication software to prepare your computer to dial
a call. Then type
ATDx
phone number[Enter]
where
x
is equal to
T
for touch-tone or
P
for pulse dialing. The
phone number
is your telephone number.
For example, if your External Modem is connected to the telephone
line 555-2121 and touch-tone dialing is supported in your area, type
ATDT 5552121[Enter].
3.
You should hear the busy signal and receive a
BUSY
response
because the External Modem is calling itself.
4.6 Connecting Microphone And Speaker
You could either use a handset connected to the External Modem, or
connect a microphone and a speaker for voice recording and playback.
NOTE:
Any commercially available microphone is usable.
For the speaker, any 8 ohm speaker rated around 1Watt can be driven
directly by the audio output. An amplifier is required if you need a
higher output volume.
1. Connect the microphone to the mini-phone jack marked
MIC
.
2. Connect the speaker to the mini-phone jack marked
SPK
.
