The Question is:
Our NCMC is VMS based, and we are serving for rural area telephone calls. My
problem is I want to make a program (VMS).For example ,a handset telephone can
have an incoming call but can not do an outgoing call.If its possible , can I
have your ideas about
Thanks for your cooperation .
The Answer is :
OpenVMS requires the assistance of external hardware for access to
the Public Switched Telephone Network (PSTN). At a minimum, the
hardware involved is a modem, and out-bound calls are easily possible
with most modems -- see SYS$EXAMPLES:*DTE* for some examples, and see
the various discussions of wiring modems here in Ask The Wizard.
At a more advanced level, devices such as DECtalk or DECvoice or
other text-to-speech (speech synthesizer) products can function
similarly to a modem, save that these devices can and do generate
speech on the telephone line based on DTMF or other input from the
user and text generated by the computer in response to the DTMF
input. Other options include the use of digitized voice and voice
recognition, depending on the capabilities of the particular telephone
interface device in use.
Contact with the Compaq Services organization would likely be the
most fruitful course, as Compaq Services can locate or can create
the application necessary, or can provide the training necessary
for you to be able to design and create the application required.
(Unfortunately, telephone-based user interfaces are far harder to
design than they initially might appear.)