My understanding is that the communication with the modem was successful,
but for unknown reason it could not work out the parameters. It really
depends how you define fail.

On 25 May 2010 01:53, DAynaTem <[email protected]> wrote:

> but with response 99      not known or not detectable maybe fail??
>
> On Mon, Apr 19, 2010 at 7:24 AM, Thanasis <[email protected]> wrote:
> > Please do - thanks :)
> >
> > Just remember to post the fix on the tracker (http://code.google.com/p/
> > smslib/issues/list).
> >
> > (I also suspect that any fix will break compatibility, since it would
> > require two things as return values)
> >
> > On Apr 19, 3:19 pm, Novak Petrovic <[email protected]> wrote:
> >> All clear now, that's exactly what I was after! Thank you very much.
> >>
> >> P.S. Would it be OK for me to take on to fix this, i.e. to come up with
> a
> >> meaningful way of describing the signal quality?
> >>
> >> On 18 April 2010 05:00, Thanasis <[email protected]> wrote:
> >>
> >>
> >>
> >>
> >>
> >> > Hi,
> >>
> >> > Thanks for bringing this up. During the years, I've always thought of
> >> > changing this stupid conversion (a relic of the past) but it always
> >> > slipped my mind...
> >>
> >> > I am copying from GSM 07.07(-200):
> >>
> >> > 8.5     Signal quality +CSQ
> >> > Table 52: +CSQ action command syntax
> >> > Command
> >> > Possible response(s)
> >> > +CSQ
> >> > +CSQ: <rssi>,<ber>
> >> > +CME ERROR: <err>
> >> > +CSQ=?
> >> > +CSQ: (list of supported <rssi>s),(list of supported <ber>s)
> >> > Description
> >> > Execution command returns received signal strength indication <rssi>
> >> > and channel bit error rate <ber> from the ME. Refer subclause 9.2 for
> >> > possible <err> values.
> >> > Test command returns values supported by the TA as compound values.
> >> > Defined values
> >> > <rssi>:
> >> > 0       ?113 dBm or less
> >> > 1       ?111 dBm
> >> > 2...30  ?109... ?53 dBm
> >> > 31      ?51 dBm or greater
> >> > 99      not known or not detectable
> >> > <ber> (in percent):
> >> > 0...7   as RXQUAL values in the table in GSM 05.08 [20] subclause
> 8.2.4
> >> > 99      not known or not detectable
> >> > Implementation
> >> > Optional.
> >>
> >> > I am afraid I cannot answer your last question...
> >>
> >> > On Apr 17, 10:13 am, npetrovic <[email protected]> wrote:
> >> > > Hi all,
> >>
> >> > > I have some questions/clarifications re getting the signal level
> from
> >> > > the modem.
> >>
> >> > > I'm using a Huawei modem via USB.
> >>
> >> > > In getSignalLevel (ModemGateway.java) we have:
> >>
> >> > >    response = getATHandler().getSignalLevel();
> >>
> >> > > Following the trail in the code this leads to (ATHandler.java):
> >>
> >> > >    getModemDriver().write("AT+CSQ\r");
> >> > >    return (getModemDriver().getResponse());
> >>
> >> > > which effectively does the job (for my modem anyway).
> >>
> >> > > The string that we get back is something like "+CSQ: 14,99OK"
> >>
> >> > > getSignalLevel in ModemGateway.java converts it to an int given by
> >> > > (for the above case): 14 * 100 / 31 = 45 (%).
> >>
> >> > > My questions are:
> >>
> >> > > * What does the return string really mean (i.e. is it "signal is 14
> >> > > out of 99)?
> >> > > * Why do we multiply by 100/31 ?
> >> > > * How do I get the signal strength in dBm, which is what I am really
> >> > > after?
> >> > > * In any case, what is the signal value that we get: before
> >> > > demodulation, or after? If it is after, which standard was
> >> > > demodulated.
> >>
> >> > > Thanks!
> >>
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