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From: gandrews@netcom.COM (Greg Andrews)
Newsgroups: comp.dcom.modems
Subject: Re: Flashing PEP light on T2500.
Summary: It's retraining.
Message-ID: <25083@netcom.COM>
Date: 21 Feb 91 21:57:05 GMT
References: <784@dynasys.UUCP>
Followup-To: comp.dcom.modems
Organization: Netcom - Online Communication Services  UNIX System {408 241-9760 guest}
Lines: 25

In article <784@dynasys.UUCP> jessea@dynasys.UUCP (Jesse W. Asher) writes:
>I've got a T2500 and sometimes when I'm using it for an interactive
>session, the PEP lights starts flashing on and off and I don't receive
>anything and can't send anything.  Does anyone know why this occurs and
>how I can stop it?  I couldn't find anything in the manual, but I could
>have just missed it.  Any suggestions?

The modems are retraining.  During a retrain sequence, the modems are
analyzing the phone line and can't pass data.  It used to be that you
couldn't tell when a retrain was occuring without having the speaker on
and listening to the modem noises.  Starting in version 7 firmware, the
modems will flash the PEP light during the retrain so you can tell what's
happening.  (this is in the TB+ with version 7 also)  The T2500 will flash 
the CD light during a V.32 retrain sequence.  That's not documented in the 
manual itself, but it is in the Version 7 Addendum on the last page.

If your modems do this a lot, it indicates that they're having trouble
with the phone line quality.  If it happens only once in a while, then
you probably don't want to make any adjustements in the modem.  Telebit
tech support can assist you if this happens too often.

-- 
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| Greg Andrews      |   gandrews@netcom.COM |
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