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Timeout error on Modem
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December 17, 2020
12:22 am
Kwhy
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Thanks for your help.
It's been stable for now.

Regards
Kwhy

December 16, 2020
9:21 am
Henk Helmantel
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Thanks for the configuration file. If disabling the reboot makes the modem more reliable it is best to keep the 'RebootBeforeInitialization' option to 'False'. If you later notice that the modem hangs, you can also try to set the 'RebootBeforeInitialization' option back to 'True' and the 'ModemRebootTime' to '60'. That gives the modem more time to finish the reboot procedure, it is possible that the default 30 seconds is not enough for your modem to connect to the network again. There is not much else that you can do about this issue, except perhaps a firmware upgrade for the modem. But there is no guarantee that this will help.

Most modems work more reliable with the reboot option set to 'True' but some modems work more reliable when this option is switched off. It is perfectly OK to keep the reboot option disabled.

Regards, Henk

December 15, 2020
12:30 am
Kwhy
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Hi Henk,
I 've set the 'RebootBeforeInitialization' property in the advanced settings of the GSM Modem Gateway to 'False' at 10:13 am
It resulted in the Gateway being stopped and started. And it's all good after only one connection error.
Will monitor and keep you posted.
Have also sent the config file to dms as i've mentioned in the previous post.

Regards
Kwhy

15/12/2020 10:13:31 AM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
15/12/2020 10:13:30 AM Unable to write data to the transport connection: An established connection was aborted by the software in your host machine. ELGSMGateway
15/12/2020 10:13:30 AM Serial port closed. ELGSMGateway
15/12/2020 10:13:30 AM Reset modem connection. ELGSMGateway
15/12/2020 10:13:30 AM Timeout error, no or unexpected response after GSM Modem command "AT
". ELGSMGateway
15/12/2020 10:13:00 AM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
15/12/2020 10:13:00 AM GSM modem gateway "ELGSMGateway" started. ELGSMGateway
15/12/2020 10:13:00 AM GSM modem gateway "ELGSMGateway" stopped. ELGSMGateway
15/12/2020 10:13:00 AM Serial port closed. ELGSMGateway
13/12/2020 12:57:16 AM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
13/12/2020 12:56:45 AM Pause 30 seconds to let the modem complete the reboot ELGSMGateway
13/12/2020 12:56:45 AM Serial port closed. ELGSMGateway
13/12/2020 12:56:45 AM Send modem reboot command. ELGSMGateway
13/12/2020 12:56:45 AM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
13/12/2020 12:56:45 AM Serial port closed. ELGSMGateway

December 14, 2020
10:22 pm
Kwhy
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Hi Henk,
Thanks for the reply. I'll send our config file to dms. I would like to add that no changes has been made and the modem is still in it's original location. I forgot to add that we always had this problem when rebooting the server ( VM) for windows upgrade and maintenance. We had to power down and up the modem for it to work again. I 'll look into the RebootBeforeInitialization Property as how to how and where to change it.

Regards
Kwhy

December 14, 2020
2:37 pm
Henk Helmantel
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Hello Kwhy,

If the problem started only recently, the most likely explanation is that something changed in the mobile network. Mobile networks are constantly updated and a software change or a change in the antenna configuration of the network can make the connection to the modem less reliable.

Except for a firmware update of the modem module, there is not much you can do about mobile connection problems, but you can try to set the 'RebootBeforeInitialization' property in the advanced settings of the GSM Modem Gateway to 'False'. Some modems do not react properly to a modem reboot command and if I look at the communication log, it is possible that your modem has this problem as well.

If that does not work, I would like to see the configuration file of Diafaan SMS Server (menu options 'File-Export-Configuration'). You can send this file to dms@diafaan.com.

Regards, Henk

December 13, 2020
11:41 pm
Kwhy
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Hi henk,
We've been running ver 4.3.0.2 Basic edition for 10 months. And since last months we've been having 'time out errors ' in the events logs. See below. It keeps repeating and the only working solution is to turn off and on the Modem Multitech MTR - H5 B07.
Any ideas ?
Thanks
Kwhy

EventTime - -( *** Earliest LAST - replaced ip of server by xx.xx.xx.xx)

OK NOW

13/12/2020 12:57:16 AM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
13/12/2020 12:56:45 AM Pause 30 seconds to let the modem complete the reboot ELGSMGateway
13/12/2020 12:56:45 AM Serial port closed. ELGSMGateway
13/12/2020 12:56:45 AM Send modem reboot command. ELGSMGateway
13/12/2020 12:56:45 AM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
13/12/2020 12:56:45 AM Serial port closed. ELGSMGateway
13/12/2020 12:56:45 AM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway

keep on repeating.................

12/12/2020 10:59:53 PM Serial port closed. ELGSMGateway
12/12/2020 10:59:53 PM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
12/12/2020 10:59:53 PM Unable to write data to the transport connection: An established connection was aborted by the software in your host machine. ELGSMGateway
12/12/2020 10:59:53 PM Serial port closed. ELGSMGateway
12/12/2020 10:59:53 PM Timeout error, no or unexpected response after GSM Modem command "AT
". ELGSMGateway
12/12/2020 10:59:23 PM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
12/12/2020 10:58:52 PM Pause 30 seconds to let the modem complete the reboot ELGSMGateway
12/12/2020 10:58:52 PM Serial port closed. ELGSMGateway
12/12/2020 10:58:52 PM Send modem reboot command. ELGSMGateway
12/12/2020 10:58:52 PM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
12/12/2020 10:58:52 PM Serial port closed. ELGSMGateway
12/12/2020 10:58:52 PM Serial port "TCP/IP:115200,n,8,1:xx.xx.xx.xx:5000" open. ELGSMGateway
12/12/2020 10:57:55 PM A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond xx.xx.xx.xx:5000 ELGSMGateway
12/12/2020 10:57:33 PM Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host. ELGSMGateway
12/12/2020 10:57:33 PM Serial port closed. ELGSMGateway
12/12/2020 10:57:33 PM Reset modem connection. ELGSMGateway
12/12/2020 10:57:33 PM Timeout error, no or unexpected response after GSM Modem command "AT+CMGL=4
". ELGSMGateway

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