Tandy DCM-7 Operation Manual page 22

300-bps intelligent modem
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Tandy protocol mode operation
2. Type
A
to set the Modem to the answer mode if the TYPE parameter·
does not show the value A.
3. Press
®
to force the Modem out of command receptive state and into
auto-answer mode. The Modem will then wait for the telephone to ring
and sends:
WAITING FOR RING
4. When the phone rings, the Modem begins counting the rings and sends
the RING result code to the display for each ring. After 2 rings, it answers
by seizing the telephone line and asserts carrier. The calling modem replies
with its carrier. Both modems are now ON LINE and telecommunica-
tions can begin.
The ring number is set to 2 at power-on. This means your Modem will seize
the phone line after 2 rings. When you want to change this number, press
OJ
for the ring change command when the Modem is in command recep-
tive mode. The display prompts:
ANSWER ON 1-9 RINGS OR CR FOR NO CHANGE
=
When you do not need to change the number of rings, answer this prompt
by pressing
(ENTER) ,
which is the CR (Carriage Return) key. To change
the ring number, type in the new number. Note that only a number key or
the ENTER key is accepted. If you press any other key, the DCM-7 will
"echo" the typed key (if displayable) and ask the question again.
If the key you press is a valid entry, the Modem sends the next prompt:
RETRY FOR 1-9 TIMES OR CR FOR NO CHANGE
=
For the time being, press
(ENTER)
to skip.
If either modem breaks the connection after a successful data exchange with
the abort character, the DCM-7 will send the DISCONNECT result code,
then the WAITING FOR RING result code. This means it returns to auto-
answer mode and monitors the line. As long as the Modem is in auto-answer
mode, it will continue to monitor the telephone line for an incoming call.
You can turn OFF this call-waiting mode by pressing
eJ.
When the Modem
detects the
*,
it will change to auto-originate mode and return to the command
receptive state.
Example 4: Automatic originate mode
1. Follow the procedure in Step 1 of Example 3, Automatic answer mode.
2. Type 0 to set the Modem to originate mode if the TYPE parameter does
not show the value 0.
16

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