For GEMS, the DIPs
are 3 and 8. Those are the factory settings. Please don't touch
As for the ARQ/FAX,
I talked to Mike about this last week and am at a loss myself. I have not
seen the behaviour Steve describes but, like AccuVotes, 3COM/USR changes their
firmware from time to time. About all I can offer is that if ATI4 gives
you the exact same NVRAM settings as a modem that is acting as expected, and you
have the DIPs right, then you have done everything you can do. What do the
lights do if you send an ATZ command from hyperterm on the raw COM
To track down the
"cause", the following needs to happen:
- Get a modem that
does ARQ/FAX and one that doesn't in the same room.
- Do an ATI4 on both
and make sure the NVRAM settings are the same.
- Call 3COM with the
serial numbers of the two units and ask why they behave differently when the
settings are the same.
From a practical standpoint,
the light either indicates Automatic Repeat reQuest, or FAX, and neither make
sense (or can cause any harm) when the modem is on hook. If it answers the
second call correctly, you are on pretty safe ground here.
I believe i received email from Mike indicating 3 and 8
down. Is Charlie's note relevant and maybe the cause of my errant
My notes say that, for incoming, dipswitches 4
& 8 should be down..... (my notes are as old as I am)
I don't know whether this is a problem or
not. Does anyone else. The normal lights on the US Robotics
Modem light up when the Com port is started (AA = Auto Answer, TR = Terminal
Ready, and CS=Clear to Send). However, when the 1st poll site uses
modem, it does not recycle back to this state, but also has the ARQ/FAX
light, which stays lit. Is this a problem??
According to Manual light indicates
ARQ/ Error Control
/ FAX Fax Operations Data Mode: Automatic Repeat Request. ON if modem is set to
&M4 or &M5 and successfully establishes an error control connection.
Flashes when modem retransmits data to remote modem. Fax Mode: Flashes to
indicate fax mode.
The light is just constantly on after 1st
transmission. I have 3 and 8 in "down" position.