modem dial in AND out possible under Ultrix?

[Frank Fischer]

Hi,

I want to configure a MVAX II serial port for modem communication.
It should be possible to dial-in and to dial-out on the same serial
port.

I'm running Ultrix V2.2, the Modem is an ELSA Smart Box 2.

With SunOS this is possible by having 2 devices with the minor device
number of the incoming device set to  the minor device number of the out-
going device plus 128. Is something similar possible under Ultrix ?

Thanks in advance

Frank
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