Section 4 : Troubleshooting

Q420: Problems with FAA=1 ?

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Re: Problems with FAA=1 ?

I've Problems with the ModemSetupAACmd: (adaptive answer command)

Date: Fri, 09 Aug 1996 11:12:16 -0700
From: Sam Leffler <>
Subject: Re: Problems with FAA=1

    To:  "''" 
    Subject:  Problems with FAA=1
    Date: Thu, 08 Aug 1996 20:35:30 CDT
    From:  "Francisco Correa R." 

    I wrote the last Friday that I've Problems with de ModemSetupAACmd:
    AT+FAA=1 because when it's in my config file the system accept only
    Data calls appropriately, and when it isn't in the config-file the
    system accept only FAX call.
    I've  received an answer for my problem that say:
    Some modem require +FCLASS=0+FAA=1 to do answer correctly.
    Y think that's mean set ModemSetupAACmd:  AT+FCLASS=0+FAA=1 in
    config file, but it doesn't work.
	<...stuff deleted...>

I know of only two modems that correctly support adaptive-answer with
Class 1 operation: ZyXEL 1496 (and probably 2864 but never tried) and
the Motoroloa Lifestyle.  Your modem is not correctly implementing
adaptive-answer; it is switching into Class 2 mode when a fax call is
received.  HylaFAX does not support split operation; e.g. outbound with
Class 1 and inbound with Class 2/2.0.  Either configure the modem to
operate as a Class 2 modem or do not use the modem's adapative-answer


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