🚀 go-pugleaf

Greetings,

We are about to embark on our first use of automated outbound calling
from a 3725 communications front-end.  The application is TRACS software
(on a 3090 running MVS) sending Bisync 3780 data to a remote JES2 site.
Bisync 3780 RJE protocol is the only choice at the remote JES2 end.

My current level of understanding is that we will need a syncronous
switched network modem (RS-232C / V.24) connected to a 3725 port as well
as an Automatic Calling Unit (RS-366 / V.25) connected to a **second**
3725 port.  The modem and ACU are then connected together in some manner.
This configuration would support the host (TRACS) use of the 3725 Dial
CCW (handled by the EP code in the 3725 front-end).

I have two questions for anyone who has been down this road before:

1.) Is my understanding of the 3725 requirements correct?
2.) Can someone recommend an ACU or modem and ACU pair that has worked
    well in the past (and is reasonably priced)?

I am aware that with a modem that implements V.25bis this configuration
could be reduced to just one 3725 port.  Neither the microcode nor the
EP in my 3725 supports V.25bis.

Thanks in advance for any information that you might be able to provide.
Since this is a topic that may not have wide interest perhaps responses
back to me directly would be more appropriate.

Thanks again,

Larry Scollard, Sr. Systems Programmer/Analyst
--------------
University of Tennessee Computing Center
Knoxville, Tennessee
USA