Serial Multisession

Gavin Scott gavin at
Thu Jun 24 18:42:08 CDT 2021

The patent goes into considerable depth on the "preferred embodiment"
with descriptions of the protocol with flow control etc. and it looks
like it could be pretty easy to reverse engineer if the actual
implementation is similar to the description in the patent. If one had
a working example to play with of course. Could be a fun little

The flow control is kinda interesting. The receiver sends "transmit
credits" to the sender who will consume them in the process of sending
data and then stop until more credits are received.

On Thu, Jun 24, 2021 at 4:25 PM Glen Slick via cctalk
<cctalk at> wrote:
> >
> > Also supported by the VT420, VT510, VT520, VT525
> >
> Actually as far as I can tell the VT510 does not support TD/SMP
> (Terminal Device/Session Management Protocol). No mention of multiple
> sessions in this VT510 manual as there are in this VT520 manual.

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