As long as the modems keep their COM port after you remove and reinsert them in your computer this should be OK. However, USB modems are usually not designed with this scenario in mind and I generally don't recommend using multiple USB GSM modems on one computer. It is usually more reliable to use multiple serial port GSM modems or a multi-port GSM modem pool.
The error '300, Error: USSD command not supported' means that the GSM modem that you are using does not support USSD and that you cannot use it to send USSD commands from Diafaan SMS Server.
What I meant with my Vodacom example:
I have to deal with 4 different providers and I have 4 modems connected with a SIM for each provider.
I was thinking to automatically point (through my script) messages to Vodacom numbers to the Vodacom gateway (and so on).
I get the impression (after two days) the COM ports do not change (after REBOOT) and the gateways still correspond with the name I initially gave it... so that should be good.
Another thing I came across...
I thought it should be possible to check the credit status of the prepaid modems.
However I got the error: '300, Error: USSD command not supported'
Is this an error based on the reply of the network or is there another reason?
(I am using the Basic Version)
Diafaan SMS Server expects the GSM modem to be always on the same COM port, it does not try to find the GSM modem again when the COM port has changed. For most GSM modems this works OK and you can remove the GSM modem, change the SIM card, connect it again and it will use the same COM port and Diafaan SMS Server will detect that the modem is available again. However, some (USB) modems assign another COM port when they are reconnected and this will not be detected by Diafaan SMS Server.
I am not sure what you mean with your Vodafone profile example, can you explain in more detail what the problem is?
Could you tell me how GSM modem gateways are identified/PHP_script_to_send_SMS_messagescognized?
Suppose you have several modem gateways configured
Somebody is messing with the system - taking one modem out - maybe changing one of the sims for another - the com-port is changed.
What is the determining factor for a Gateway to be recognized as one you have already configured? (the IMEI?)
When I have created a Modem profile Vodacom which I want to address for all my Vodacom numbers... what is the approach? Can I normally rely on the profiles I have created or should I always do a server status request to check this?
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