Does the SLC serial port (s) have modem control?

[devil at TECHUNIX.BITNET]

In article <1990Nov4.030825.2169 at rice.edu> freedman at euclid.math.temple.edu (Avi
Freedman) writes:

>Since sun sales dweeboids are notoriously unreliable, I figured that I'd
>check with the net.  Are there any problems hanging a Tbit 2500 off of an
>SLC?  I heard in a press release that they had strange serial ports or
>something, and it is important that I can run uucp over the tbit.

No problem for the first serial port, it is completely standard.  In fact,
I am writing this thorugh a Tbit 2500 connected to an SLC, so I guess that
proves it.

I got the pin out for the second serial port off the net, and that one
does not have DTR/DSR lines. This makes it bad for use with modems, unless
you want to do software control of hangups, and don't mind not detecting
them...

The following is a part of an old mesasge from comp.sys.sun.  I forgot who
the original proster was, But Thanks! I tested the pin-out below, and it
works for both ports.

Wire these pins straight through for the A port:

        SLC     use                     A port
        1       protective ground       1
        2       TD (transmitted data)   2
        3       RD (received data)      3
        4       RTS                     4
        5       CTS                     5
        6       DSR                     6
        7       signal ground           7
        8       DCD                     8
        20      DTR                     20
        22      RI                      22

Wire these pins to the B port:

        SLC     use                     B port
        1       protective ground       1
        7       signal ground           7
        13      secondary CTS           5
        14      secondary TD            2
        16      secondary RD            3
        19      secondary RTS           4

Note that pins 1 and 7 are common to both ports.

End included message.

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