Two modems do not duplicate the volume of messages

Two modems do not duplicate the volume of messages SearchSearch
Author Message
Ramón
New member
Username: El_miche

Post Number: 2
Registered: 02-2008
Posted on Monday, October 26, 2009 - 07:24 pm:   

Hi,

Im test nowsms v.2008.02.00 with two Option ICON 225 USB Modems(v.2009 I believe that one does not take well with my modems).

with a modem it sends around 10 messages per minute, but with two modems only send 13 or 15 messages per minute.
I could see that it does not send a message with each modem, but it soon uses several times one and the other.

Atach logs
application/octet-streamLogs
SMSDEBUG.LOG (214.0 k)
application/octet-stream
SMSOUT-20091026.LOG (42.6 k)
Des - NowSMS Support
Board Administrator
Username: Desosms

Post Number: 1385
Registered: 08-2008
Posted on Monday, October 26, 2009 - 09:17 pm:   

Hi Ramon,

It is the occasional modem errors that are slowing you down.

There was one period of time where you managed to send 20 minutes out in a minute.

If you try with only one modem, do you ever see those "Retry Pending - ERROR - Modem Response (2):" errors?

That is a very unusual error to experience sporadically. Usually if this error happens, it happens consistently and it's a compatibility issue with the modem.

Basically, what it means is that we've sent commands to the modem to send a message ... and we've waited 2 minutes for a response back from the modem, but there's been no response.

That's why the performance is so bad.

What I don't understand is why this would be happening. It does seem to be happening to both of your modems, not just one.

But toward the end of the log, "Modem Interface #3", in particular, was not just failing to respond, it repeatedly failed to respond and would constantly need to be reset.

So I'd ask these questions:

1.) Do you ever see those errors when sending via only one modem?

2.) Do you have other USB ports that you can try?

3.) Why do you think that v2009 "does not take well" with your modems?

The modem handler in NowSMS 2009 actually gets a long a lot better with USB modems than previous releases. We found that in some situations, NowSMS was overwhelming some USB modem drivers, leading to modem lockups similar to what you're encountering here. (And there are more configuration parameters in NowSMS 2009 to troubleshoot possible USB modem driver overruns.)

--
Des
NowSMS Support
Ramón
New member
Username: El_miche

Post Number: 3
Registered: 02-2008
Posted on Tuesday, October 27, 2009 - 02:16 pm:   

Hi Des,

In responce at your questions:

If you try with only one modem, do you ever see those "Retry Pending - ERROR - Modem Response (2):" errors?
-No. With only one modem work OK, without errors (send 10 sms per minute)


That is a very unusual error to experience sporadically. Usually if this error happens, it happens consistently and it's a compatibility issue with the modem.
-I purchase this modems because it passed your tests http://blog.nowsms.com/2009/09/send-and-receive-sms-and-mms-with_21.html


1.) Do you ever see those errors when sending via only one modem?
-No. Very very sporadically, that not a problem.

2.) Do you have other USB ports that you can try?
- Yes, I tried with all ports and others PCs.

3.) Why do you think that v2009 "does not take well" with your modems?
- Because I have some problems set this. The service tild wen add the modems.

Attach two logs of two test (whit only one modem and two modems)

Best regards and thanks.
}-
application/octet-stream
test.rar (12.3 k)
Des - NowSMS Support
Board Administrator
Username: Desosms

Post Number: 1390
Registered: 08-2008
Posted on Tuesday, October 27, 2009 - 08:48 pm:   

Hi Ramon,

I'd really like to get you on to NowSMS 2009.

Or better yet, the updated version at http://www.nowsms.com/download/nowsmsupdate.zip.

When we wrote up the modem test, we were using NowSMS 2009.

It looks like what you are encountering is a USB overflow situation that the modem driver is not handling gracefully. NowSMS 2009 has code updates that specifically address this scenario, as well as additional tuning parameters.

Meanwhile, I've been running a variety of tests with multiple modems today. I've yet to see a problem, but currently I do not have two of the same model of any modems ... only one of many different models. So I'm working on getting a second ICON 225 to see if there is a problem specific to having more than one of this particular modem.

While we're working on getting that additional modem, let's get you on NowSMS 2009 ... or better yet http://www.nowsms.com/download/nowsmsupdate.zip.

If your NowSMS 2008 code won't let you update, then e-mail me the details of your serial number, reference code, etc., and we'll get a new one issued so that we can get this resolved using current product. E-mail those details to nowsms@nowsms.com with "Attention: Des" in the subject line.

--
Des
NowSMS Support

--
Des
NowSMS Support
Ramón
New member
Username: El_miche

Post Number: 4
Registered: 02-2008
Posted on Thursday, October 29, 2009 - 04:24 pm:   

Des, Thanks for your responce.

I am going to try again with NowSMS2009.

You test this version whit more of one modem? That modem you used?

In other way... what is the best modem that you test? Wath is the best USB stick modem that you test? Im interted on USB Sticks because whit this is possible attach a great amount of modem at one PC whitout slot restrictions.

Thank against and regards.
Des - NowSMS Support
Board Administrator
Username: Desosms

Post Number: 1398
Registered: 08-2008
Posted on Thursday, October 29, 2009 - 10:26 pm:   

Hi Ramon,

In the office, we tend to buy a lot of different modems so that we can test them for compatibility and quirks.

As a result, we don't currently have two of the same model USB stick modems.

When I test multiple modems, it's always different modems.

I've been most pleased with the performance of the Option modems, so I'm going to run some tests with multiple Option ICON 322 modems next week. (I can get additional 322 modems easier than the 225.)

I want to see if I encounter any problems like you describe.

Although, I'm hopeful that your problem will be resolved by the changes to the USB modem handling in NowSMS 2009.

Prior to NowSMS 2009 ... with a few USB modems, we encountered problems like you are experiencing when only a single modem was installed. We discovered that these USB modem drivers were encountering a USB overflow situation, so we made changes in NowSMS 2009 to accommodate them.

--
Des
NowSMS Support
ashot shahbazian
Frequent Contributor
Username: Animatele

Post Number: 51
Registered: 06-2004
Posted on Sunday, November 15, 2009 - 02:20 am:   

Intermittent errors while sending can also be the result of a SIM card application reacting on binary SMS sent by the carrier, which has become common.

Use the following commands (or the equivalent, check the AT command manual for your modem) to disable it:

#sets to factory default
commandpostinit1=at&f

#disables SIM menu
commandpostinit2=at+stsf=0

#saves changes
commandpostinit3=at&w

stop-start-stop the service for the commands to apply, then remove from modem sections. You only need to do this once when adding a new modem or changing the SIM card.

It helped us in one case when we were dead stuck.

Kind regards,
Ashot
Vladi
New member
Username: Vladku

Post Number: 4
Registered: 06-2009
Posted on Sunday, November 15, 2009 - 02:03 pm:   

Gents, are you running your tests on windows server platforms ? I have a lot of issues with Option ICON 225 USB on windows 2008.
Des - NowSMS Support
Board Administrator
Username: Desosms

Post Number: 1430
Registered: 08-2008
Posted on Monday, November 16, 2009 - 04:57 pm:   

I've only been running them on workstations ... Vista and Windows 7.

What issues are you having on Windows Server 2008?

--
Des
NowSMS Support
ashot shahbazian
Frequent Contributor
Username: Animatele

Post Number: 54
Registered: 06-2004
Posted on Tuesday, November 17, 2009 - 02:17 am:   

Never seen issues on W3K server.
Vladi
New member
Username: Vladku

Post Number: 5
Registered: 06-2009
Posted on Tuesday, November 17, 2009 - 04:53 pm:   

I am having intermittent ICON modem disconnections with following: ERROR - Error waiting for response from modem (2) -- GlobeTrotter HSxPA - Modem Interface

If the modem is connected and pass the diagnostic test, I am trying to send MT messages , but the SMS is delivered with 10 minutes(!) delay and then I see the above error in the log file.

Other devices are working fine on the same server running NowSMS.

My be that specific modem is faulty or I don't have correct drivers
Des - NowSMS Support
Board Administrator
Username: Desosms

Post Number: 1438
Registered: 08-2008
Posted on Tuesday, November 17, 2009 - 05:18 pm:   

Hi Vladi,

Someone else was having a similar problem with an Option ICON 225 modem.

We weren't able to figure out what was happening and were suspecting a problem with the modem. However, they came back to us and told us that they changed the baud rate in the Windows modem driver, and the problem went away. I don't know what they changed it to, but you might want to look at this.

Also, if you're using the drivers that shipped with the modem, it's a good idea to de-install those, and go to http://support.option.com and do a fresh install with those drivers.

If the problem persists, I do have one a couple of other ideas.

Try editing SMSGW.INI, and under the [SMSGW] header, add ModemMaxBytesPerSend=1

Then restart the service.

If this makes a difference, you can experiment with higher values. This setting controls how many bytes at a time are sent to the modem driver. Unfortunately, it is a global setting that affects all modems, but it is worth experimenting with as a test. (Note: This setting is only present in NowSMS 2009.)

Another modem setting which I haven't had reason to try in a long time, but may be worth a try for troubleshooting is ModemSendDelay=####, where #### is a number of milliseconds.

Again, this setting goes under the [SMSGW] header and applies to all modems. It inserts a forced #### millisecond delay between receiving a modem response and sending the next command.

If the modem is becoming confused because NowSMS is sending commands too fast, this might make a difference. I have not observed this problem on the Option ICON 225, so it's a real longshot ... but I do recall an old Novatel PC Card modem that would become confused unless at least a 100 ms delay was introduced.

--
Des
NowSMS Support
Vladi
New member
Username: Vladku

Post Number: 6
Registered: 06-2009
Posted on Tuesday, November 17, 2009 - 05:30 pm:   

Hi Des,
many thanks for thoro response .
I will experiment with the settings and will keep you posted
Ramón
New member
Username: El_miche

Post Number: 8
Registered: 02-2008
Posted on Wednesday, November 18, 2009 - 05:53 pm:   

Hi Ashot,

Can you tell me more abaut this:
__________________________________________________
Intermittent errors while sending can also be the result of a SIM card application reacting on binary SMS sent by the carrier, which has become common.

Use the following commands (or the equivalent, check the AT command manual for your modem) to disable it:

#sets to factory default
commandpostinit1=at&f

#disables SIM menu
commandpostinit2=at+stsf=0

#saves changes
commandpostinit3=at&w

stop-start-stop the service for the commands to apply, then remove from modem sections. You only need to do this once when adding a new modem or changing the SIM card.
__________________________________________________

I suspect this is happening to me.

Try using the commands you mention by HyperTerminal, but dont work at+stsf=0 command. I have a Option Icon 225 modem, can you help me with the command for this modem?

Best Regards!}
ashot shahbazian
Frequent Contributor
Username: Animatele

Post Number: 55
Registered: 06-2004
Posted on Wednesday, November 18, 2009 - 09:23 pm:   

Hi Ramon,

There could be SIM aplications embedded by the carriers for all kinds of functionality. Some would listen to binary SMS sent by the network, and in our experience if that happens it makes it nearly impossible to use the SIM in a modem neither for sending nor for receiving: the modem quickly gets hung.

The stsf command may not be supported by Option modems; if you have the AT command guide for the device check if there are equivalent commands that would disable SIM applications. If you can't find one stick the SIM card into a regular Wavecom (or Multitech) GPRS modem (not the 3G version as they run on Siemens modules) and issue these commands and then try using the SIM in a Option device.

If you stick your SIM card into a regular handset, make a call or send a text - and then you get balance notifications whith what appears like Flash messages (they are not) then you definitely have a SIM app running and should disable it.

Kind regards,
Ashot
Vladi
New member
Username: Vladku

Post Number: 7
Registered: 06-2009
Posted on Monday, December 21, 2009 - 03:16 pm:   

Hi
unfortunately after trying all recommendations
I haven't managed to get Option ICON 225 modem working, We've decided to use another one - ZTE MF637 which is working fine.
Happy Holidays , V