Support forum

Advanced Search

— Forum Scope —




— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_TopicIcon
Error 500 (unknown error) when sending SMS messages
sp_NewPost Add Reply sp_NewTopic Add Topic
November 25, 2014
12:17 pm
Henk Helmantel
Admin
Forum Posts: 553
Member Since:
May 28, 2013
sp_UserOfflineSmall Offline

98 errors out of 260 sent messages is a lot more than I usually see with Siemens or Cinterion modems. Hopefully the send delay will decrease the number of errors to a more normal value. A high number of errors usually points to a problem with the connection to the mobile network, sometimes a better antenna or another placement of the modem can help to improve the reliability of the modems.

The reliability of the Wavecom modem modules is more or less the same as the reliability of the Conterion/Siemens modules. However, sometimes a specific modem module works better on a specific network than other modem modules.

Regards, Henk

November 25, 2014
11:28 am
Allan
Guest
Guests

Hi

The gateway status page indicates 124 errors out of 446 message for one modem, and 98 out of 260 messages for the other.
I have set the send delay to two seconds. Next test run will be tomorrow morning.

On a sidenote, the problem actually also exists on our Solarwinds server (same modem Siemens MC35i), but since nobody ever noticed before, I guess it is a minor problem.

I have ordered an 8-port USB modem pool (Wavecom modules) as recommended by you. Looking forward to seeing how this performs.

Thanks for your help so far.

Allan

November 25, 2014
10:26 am
Henk Helmantel
Admin
Forum Posts: 553
Member Since:
May 28, 2013
sp_UserOfflineSmall Offline

Hello Allan,

Are you sure that the error 'CMS ERROR: 500' is returned after each message? If that would be the case, and you still receive the messages, I would expect that you receive each message multiple times because Diafaan SMS Server re-sends the message when this error occurs.

It is not unusual that the error 'CMS ERROR: 500' is returned once in a while but when this does not happen too much it is not a problem. The Siemens and Cinterion modems seem to generate more send error messages than some other modem brands but not so much that it would normally cause problems.

You can see the number of message errors on the status page of the GSM Modem Gateway. The 'Message send errors' indicate the number of errors after attempting to send the messages and the 'Messages sent' indicates the number of messages that are successfully sent. The number of send errors should be low in comparison with the number of sent messages. If it is too high then it indicates that there are connection problems between the modem and the network.

To decrease the number of send errors, you can slow down the send speed with the 'SendDelayTime' property in the advanced settings of the GSM Modem Gateway. If you set this property to 1 or 2 seconds you should see a decrease in the number of send errors.

Regards, Henk

November 25, 2014
9:29 am
Allan
Guest
Guests

Hi!

We have been using SMS server light edition for some years now for our Solarwinds monitoring system, but now we are evaluating the product for a large scale customer contact application.

Every time an SMS is sent vi receive an ERROR: 500 message and then the modem reboots (see events below).
The messages are apparently deliveret OK, despite of the error, so I guess it may not be important, but I would still prefer the events didn't happen.

How can we troubleshoot this?
We have two modems in the test pool, one Siemens MC35i and one Citerion MC55i. Events happen on both modems.

EventTime Event Source
25-11-2014 08:50:14 Serial port "COM3:115200,n,8,1" open. GSM Modem #1
25-11-2014 08:49:59 Pause 15 seconds to let the modem complete the reboot GSM Modem #1
25-11-2014 08:49:59 Serial port closed. GSM Modem #1
25-11-2014 08:49:58 Send modem reboot command. GSM Modem #1
25-11-2014 08:49:58 Serial port "COM3:115200,n,8,1" open. GSM Modem #1
25-11-2014 08:49:58 Serial port closed. GSM Modem #1
25-11-2014 08:49:58 Serial port "COM3:115200,n,8,1" open. GSM Modem #1
25-11-2014 08:49:58 Serial port closed. GSM Modem #1
25-11-2014 08:49:58 The GSM Modem returned +CMS ERROR: 500 (Unknown error) after the command. GSM Modem #1

Regards
Allan Holdt

Forum Timezone: Europe/Amsterdam

Most Users Ever Online: 494

Currently Online:
12 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

Member Stats:

Guest Posters: 364

Members: 0

Moderators: 0

Admins: 1

Forum Stats:

Groups: 2

Forums: 3

Topics: 532

Posts: 1847

Newest Members:

, Henk Helmantel

Administrators: Henk Helmantel: 553