[net.micro.pc] Help - PC7300 single line telephone

gtp@hounx.UUCP (G.PECKHAM) (07/09/85)

I am having problems getting my single line telephone
to work correctly. The following symptoms have been
observed.

After booting the system I can go into the phone manager
and toggle the line into data mode.
I can then go ahead and place one data call (everything works).
After I exit from the data call if I try to place a second
data call the system will not allow me. An error message is
displayed "Unable to use line one" or it tries to place
the call and then hangs up the line after a connection
is made.
I have tried toggling the line back to voice mode and then
back to data mode but this puts the system into some kind
of a loop; repairable only by switching back to voice mode
or shutting the system down.

I have a second system that I have been using with two
lines and everything seems to work fine there.

I have tried the trick of  switching the ring and tip leads
at the line one wall connection but this still has the same problem
and prohibits me from making outgoing voice calls.

My modem profile is the same as the two line machine:
     baudrate:  1200
     send par:  no parity
     check par: no
Further, I disconnect my data call via the shift <Exit> key.

Anyone had similar problems or know of a fix for this one?

Gary Peckham,  BTL - HO, (201) 949-1831,  hounx!gtp