The modems we are using are hardware version CD25TCPU with firmware
11.608.02.00.94 and the file version on the Windows driver is
2.0.3.819.

I have looked at the logs and don't see anything suspicious.
Everything is running fine and then some AT command that shouldn't
fail causes a timeout.  Usually SMSLib throws a timeout exception and
then restarts itself and it works ok after that.

It often happens when there are no messages being sent at all - like
in the middle of the night.  This despite the fact that we do have
times of day when we are sending messages for 30-45 minutes straight
usually without problems.

It is running on a Dell server that should have plenty of power to the
ports although I can't say I have tested it and I made sure that the
power management doesn't put the ports to sleep.

Josh


On Jul 12, 8:51 pm, Nicholas Romero <[email protected]> wrote:
>   I have not seen the Huawei modems freeze up like this.   Can you send
> me the firmware version of the modem?  I would like to compare it to the
> ones I have here.  This might be a windows driver or USB issue.   Have
> you had any debug output turned on when the freeze occurs?  What is the
> last output from the modem if you have?
>
> The only issue I have seen on mine that make them go a little nuts is if
> there are very large numbers of messages that go out. Wvery once in a
> while my carrier will de-register my device and block it for a while.
> Continuous sending for about an hour will usually cause that to occur.  
> I throttle sometimes to account for this.
>
> One other thing that I remeber, and have a post somewhere about, is the
> power requirements of the device is somewhat high.  Make sure that the
> USBport can supply the power and that if the computer has power
> management features that it does not put the ports to sleep and hence
> the modem.  The modems don't like it.
>
> -nxn
>
> On 07/12/10 01:33 PM, ze lawlaw wrote:
>
> > Thanks Josh.I have been trying to use the modem with the smserver.java
> > program and it receives messages properly.The problem arised when i
> > have to send a message.When i queue it in the SMSSERVER_OUT database,
> > it tries to send it several times then eventually marks it as
> > failed.it also throws  pdu error. ive resulted to using a nokia phone
> > modem for my outgoing messages since it accepts the text format. are u
> > using the smsserver? if so, how did you manage to send messages from
> > the E160?
>
> > On Jul 1, 10:04 pm, Josh H<[email protected]>  wrote:
> >> We have been using this modem since January on a production system
> >> that runs 24 hours a day, 7 days a week with SMSLib and it generally
> >> works.  We have noticed that once every few days the modem seems to
> >> reset itself - it just stops responding to SMSLib.  Most of the time
> >> SMSLib restarts the modem and everything continues with no problems
> >> but once every few weeks SMSLib is unable to reset the modem and we
> >> have to stop and the program manually.
>
> >> A couple of things to know about this modem:
>
> >> You have to make sure to correctly specify the model and manufacturer
> >> ("Huawei" and "E160") when creating the modem in SMSLib so that SMSLib
> >> uses the custom handler for this modem otherwise you will run into
> >> strange intermittent problems.
>
> >> This modem creates two virtual serial ports as has been described in
> >> earlier posts.  On a Windows system only one of the two ports will
> >> show up in the device manager but both will show up if you enumerate
> >> the ports using certain windows APIs.  You should use the port that
> >> shows up in the device manager rather than the other port.  In our
> >> experience this is always the higher numbered of the two ports.  If
> >> you use the other port, you will not get notifications for incoming
> >> messages.
>
> >> Good luck,
>
> >> Josh
>
> >> On Jul 1, 5:08 pm, ze lawlaw<[email protected]>  wrote:
>
> >>> hi all,
> >>>   has anyone been able to test the compatibility of the Huawei E160
> >>> modem? It is the only one i can find and would like to be sure whether
> >>> it works with the SMSserver program before purchasing it. thank you .

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