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- Path: sobt.accessorl.net!user
- From: eric@accessorl.net (Eric Shaw)
- Newsgroups: comp.dcom.modems
- Subject: Re: Handshake problems on good lines only (Supra/MegaHertz)
- Date: Sat, 27 Jan 1996 23:02:51 -0500
- Organization: Access Orlando
- Message-ID: <eric-2701962302510001@sobt.accessorl.net>
- References: <4edjaq$n1m@hera.cuci.nl>
- NNTP-Posting-Host: sobt.accessorl.net
-
- In article <4edjaq$n1m@hera.cuci.nl>, srb@cuci.nl (Stephen R. van den
- Berg) wrote:
-
- >Now, this same person/modem is in the Netherlands as well (all digital
- >phone switches here). And he tries to make connections with the exact
- >same PCMCIA modem. However, now, the handshake terminates early in most
- >cases. The Supra consistently says that there was a carrier loss (note,
- >it *doesn't* say that the protocols where incompatible).
- >The Supra's, with their current settings, connect just fine to a great
- >number of modems, so I'd rather not mess with those.
-
- >Could it be that the transmit level is too high of the PCMCIA modem?
-
- I don't doubt it. If you ever do connect with the Megahertz modem, put
- the Supra in command mode with "+++", then issue an "AT%Q1" command. This
- will tell you the transmit and receive levels, in dBm, along with the
- signal to noise ratio, bandwidth, and other info. FCC limits say they are
- supposed to be at no more than -9dBm max, but Sportster Vi's can yield
- -6dBm when directly connected. Also, Megahertz *IS* part of USR.
-
- It may help if you try to use v.FC (you may need to disable v.8 to do
- this) instead of v.34, or disable the 3429 symbol rate.
-