polarized
Member level 4
siemens a35 at commands
Hi,
I have a question regarding the tc35 gsm modem. I managed to configure the modem in a way that it transmits the received SMS messages directly to its serial port instead of storing them on the internal SIM card.But after receiving each SMS message you have to acknowledge it with a specific AT command AT+CNMA. If this is not done, the tc35 is not in the mode in which the next received SMS message comes out on the serial port. The sms message is again stored on the sim card. So, what is the problem you will ask: if a whole group of SMS messages from different objects is transmitted from the SMS service centre at once towards the same gsm modem, I mean one after other quickly and rapidly, how can I manage to acknowledge each message. Would it be a good idea to use some kind of flow control like RTS and CTS nad is it possible to use the flow control when dealing with SMS messages? How deep is the internal buffer of the TC35 gsm modem? And also do you know how long is the period of the acknowledgment timeout?
Thanks.
Hi,
I have a question regarding the tc35 gsm modem. I managed to configure the modem in a way that it transmits the received SMS messages directly to its serial port instead of storing them on the internal SIM card.But after receiving each SMS message you have to acknowledge it with a specific AT command AT+CNMA. If this is not done, the tc35 is not in the mode in which the next received SMS message comes out on the serial port. The sms message is again stored on the sim card. So, what is the problem you will ask: if a whole group of SMS messages from different objects is transmitted from the SMS service centre at once towards the same gsm modem, I mean one after other quickly and rapidly, how can I manage to acknowledge each message. Would it be a good idea to use some kind of flow control like RTS and CTS nad is it possible to use the flow control when dealing with SMS messages? How deep is the internal buffer of the TC35 gsm modem? And also do you know how long is the period of the acknowledgment timeout?
Thanks.