[lwip-users] v.23 half duplex with ppp

[Pedro Alves]

Hi all!

I tried looking everywhere, but can't get an answer for this.

I have this project here that has a CML CMX860 modem that supports only 
v.23 and bell 802.

I can connect to an ISP on v.23 full duplex mode, but that leaves me 
with 1200/75 bps. Thats 75 bps upload, on a project whoose perpose is to 
upload.

Is there any change to use v.23 half-duplex 1200/1200 with ppp? I have 
no control of the ISP side, of course.
I thought that there could be a standard protocol, or flow control, or 
whatever that could be used to decide when to switch high-band/low-band, 
that I could implement on my driver.

Sorry for posting this here. I know it is off topic.
But I am getting desparate.
I must decide today if we are going to ditch the cmx860 or not.

By the way,
Is there a place with modem drivers examples that use lwip?

Many thanks,

Pedro Alves