FCM Flow break on character?

Legacy Open AT
1

hi

I use a fastrack supreme 20 and my flow control is set to IFC=0,0 .

On FCM data receive, is it possible that a control character ,or a combination of characters,
will cause the flow to stop in one direction ( receiving data handler not firing), While data out (fcmSenddata) still works.

If so, what are these characters and how can I handle them.

Thanks

2

Software flow control - XON and XOFF :question:

3

Thanks for the reply

If I understand correctly, I’m receiving a xoff character in the fcm data receive handler, which is suspending
communication in that direction.

If this is correct, is there a way to “escape” the xon xoff characters?

4

Not in the modem - you would just have to disable software flow control (if it is, indeed, the problem).

You could, maybe, devise some “escape” mechanism in the external device that sends the data…

5

The legacy device I use to communicate with the modem doesn’t use software flow control.

Accoridng to my distributor if I set ifc=0,0 hardware flow control is off and no Software fc is used.

What other condition can cause the fcm to disable in one direction?

Thanks