Operating system name and version: W2k8 and Cygwin
Version of smsd: 3.1.6
Smsd installed from: sources
Name and model of a modem / phone: Siemens MC35
Interface: Serial using RS232-to-IP Server


Hello, i´m having the following problem with my modem AFTER I have connected my new RS232-to-IP adapter.

RS232-to-IP:  http://www.roline.dk/RolFront/varekat3.aspx?art=4288 


When I start the sms server, then I works fine for a minute or two, but then it makes this errors and hangs
This is the error with rtscts=no in conf file.:
2010-10-06 08:26:18,3, GSM1: Error: Unexpected answer from Modem after +CREG?, waiting 1 sec. before retrying 2010-10-06 08:26:20,3, GSM1: Could not send character A, cause: Permission denied 2010-10-06 08:26:30,3, GSM1: Could not send character A, cause: Permission denied 2010-10-06 08:26:40,3, GSM1: Error: Unexpected answer from Modem after +CREG?, waiting 1 sec. before retrying 2010-10-06 08:26:42,3, GSM1: Could not send character A, cause: Permission denied 2010-10-06 08:26:52,3, GSM1: Could not send character A, cause: Permission denied 2010-10-06 08:27:02,3, GSM1: Error: Unexpected answer from Modem after +CREG?, waiting 1 sec. before retrying

This is the error with rtscts=yes in conf file.:
2010-10-06 08:45:13,2, smsd: Smsd v3.1.6 started. 2010-10-06 08:45:13,2, smsd: Running as Administrator:root. 2010-10-06 08:45:13,4, smsd: File mode creation mask: 022 (0644, rw-r--r--). 2010-10-06 08:45:13,4, smsd: Note that at least GSM1 will send administrative messages, but mainspooler will not because shared memory is not available. 2010-10-06 08:45:13,5, smsd: Outgoing file checker has started. PID: 2964. 2010-10-06 08:45:13,5, GSM1: Modem handler 0 has started. PID: 5380. 2010-10-06 08:45:15,5, GSM1: Using check_memory_method 0: Fixed values are used as CPMS does not work. 2010-10-06 08:45:18,3, GSM1: Modem is not clear to send 2010-10-06 08:45:32,3, GSM1: Modem is not clear to send 2010-10-06 08:45:46,3, GSM1: Modem is not clear to send

What can I do to prevent this error ?

Best regards
WolfieDK

Your model of this device does not support hardware handshake, which causes that only rtscts = no setting can be used.

Have you checked and changed the baudrate setting? In 3.1.6 it defaults to 115200, but with this device only values 300 - 921600 are supported. Probably a value 57600 is a good choice.

I do not know why this device works only for a few minutes under Cygwin. Perhaps it has something to do with drivers which do not work properly. I think that there is not much to do for fixing this issue.

It may be interesting to test if this device can be used as a network modem, which is supported since 3.1.7. However, the "quick guide" talks about IP address and netmask, but it does not say what port is used. If you have some spare time and interest, you could try to capture network traffic using Wireshark application. It may give a hint about what causes the error, and it will show if this device can be used directly through the socket.

Hi Keke, and thank you soooo mutch for a awesome apllication and forum. It is so mutch appriciated

Quote

Have you checked and changed the baudrate setting? In 3.1.6 it defaults to 115200, but with this device only values 300 - 921600 are supported. Probably a value 57600 is a good choice.

Yes, I have all ready changed the baudrate to 9600 on both the modem and the rs232-to-ip device. But the error still occur. I will try to change it to 57600 as requested.

Quote

However, the "quick guide" talks about IP address and netmask, but it does not say what port is used.

It uses TCP port 1235 ?

Quote

... and it will show if this device can be used directly through the socket....

I have all ready wireshack installed, shall I capture a log, and paste it here, can you then help me furtere ?

Best regards
WolfieDK

WolfieDK wrote

Quote

... and it will show if this device can be used directly through the socket....

I have all ready wireshack installed, shall I capture a log, and paste it here, can you then help me furtere ?

I could try to check what can be examined from the dump...

Instructions in the private block:

Hidden private text.

Hello Keke

Thanks for you help, i have found the problem.

I have updated from 3.1.6 to 3.1.14 and it stil makes some other errors.
But then I changed from dev/com3 to @172.0.10.5:1235 and then it can connect without the windows driver/software from the manufactor.

But it stil makes an error, so I changed the rtscts=off to rtscts=on again, and now it works flawless

Best regards
WolfieDK

Thank's for the information.

I'm still wondering if rtscts really has any effect when device is a socket. At least it should not have...

Hi Keke

Quote

I'm still wondering if rtscts really has any effect when device is a socket. At least it should not have...

Okay, do you need any information before you can confirm if there is a problem with rtscts or not?
I will gladly post logs or configurations files if needed?

Best regards
WolfieDK

WolfieDK wrote

Quote

I'm still wondering if rtscts really has any effect when device is a socket. At least it should not have...

Okay, do you need any information before you can confirm if there is a problem with rtscts or not?
I will gladly post logs or configurations files if needed?

In the code there is DEVICE_IS_SOCKET tested. If you can show with smsd.conf and smsd.log files that rtscts still has an effect, it might be interesting to check.

Hi Keke!

Quote

In the code there is DEVICE_IS_SOCKET tested...

Sorry, but will you please tell me where I can find this ?

Best regards
WolfieDK

WolfieDK wrote

Quote

In the code there is DEVICE_IS_SOCKET tested...

Sorry, but will you please tell me where I can find this ?

My writing was unclear...

What I meant was that there is DEVICE_IS_SOCKET tested, and therefore the code does not use the setting rtscts at all, and it then should not have any effect.

You have now a working system with decice = @172.0.10.5:1235 and rtscts = yes. For testing, do not change anything else than rtscts = no, and restart the smsd. There should be no errors in the log, but in the case of errors show the piece of log here.

Have you checked rtscts = no and found results, or should I close this topic?

Hi Keke

Sorry for not posting befor. I dont have the same spare time after I become daddy :-)

I will test this tomorrow