I have a 1306B connected to a microcontroller. The micro boots the modem and all works well GPRS comms. However, at random periods I get dropped from the cellular network (don’t know why)resulting in various error codes. The dreaded 35868 error is causing me a lot of trouble as I appear unable to recover the Wavecom unless I cycle the power to the unit.
I have noted other people having this same problem. It would appear to be a Wavecom firmware issue. How do I solve this problem other than moving over to a alternative product (which is looking like the end result at present as a certain other product appears unaffected on same network).
Tried the AT+CGATT=1 and nothing. Tried running through all bootup commands but no luck. Must always do a power cycle. Did not try AT+CGATT=0 though.
I Tried another network and modem lasted 6 hours before I got a new “internal failure” error message. My local Wavecom distributor brought me the new Fastrack Supreme 20 to try. Could not get that modem to work at all. So tomorrow I say goodbye to Wavecom and hello to Siemens.
Let’s bug it out!
How did you test your GPRS exactly?
35868 means that you were kicked from the GPRS, are you 100% sure that you are using the correct APN parameters, password…? I think wrong parameters could cause strange things depending on the GSM operator.
Parameters used are correct and confirmed being correct. I have tested 4 different networks (with required settings) and I get similar results.
Being kicked from the GPRS network sounds correct. That is fine, but I do not want to do a total power cycle to get back on. An AT+ConnectionStart or an attach command ought to be good enough to get a connection up again.
The last internal error message did it for me. The end product is going to be sold world wide… and be configured for many networks. I cannot have a unit fall over due to Modem firmware issues.
The 1306B contains a q2406b gsm module, which i think a mature product by now. The initial versions may include many bugs, but i don’t think that the latest firmwares are too buggy. Which version did you try? If you didn’t order it specifically, probably you got a module with an old firmware.
Not sure what I was sold. Been playing some more and got another issue I can find no information about.
Sometimes when opening a socket, I get error 37122 (another internal application already running) I can find no detail as to why this is happening or how to resolve it. Anybody?
