gordon@prls.UUCP (Gordon Vickers) (06/27/89)
I am having a problem with a Hayes Smartmodem 1200.
When the modem is sharing the line with a phone, the modem does
not always hang up properly. I do not have the problem if I unplug
the phone.
Our phone system is an AT&T System 85 with the thin, ultra light
(black) AT&T phones that are propped up in back (sorry, I don't recall
the model number and don't have any in this building).
Since the modem doesn't appear to be using a relay for going on/off
hook, I suspect that something just doesn't have enough off resistance
to cause an on hook condition when an extention phone is in parallel.
I do not have schematics. Does anyone know of a modification I
can make to the modem ?
Thank you,
Gordon Vickers 408/991-5370 (Sunnyvale,Ca); {mips|pyramid|philabs}!prls!gordon
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