after a lot of development I have a new issue, my operator doesn’t deliver me anymore the good old 64kbyte SIM cards.
Now I have 72 kbyte SIMs and I have an awful latency in receiving the +WIND:4 synchronization message.
It takes 30 secs to receive the +WIND: 4 message instead of 5 secs as usually after the +CREG: 1 indication.
Does anyone have experience in this problem of acceptance between SIM chips and Wavecom Firmware?
As you say, it’s to do with the capacity of the SIM - it’s not a “fault” of Wavecom’s firmware (I actually saw it on a Sony-Ericsson module).
If you can’t get your SIM supplier to supply the “smaller” SIMs (or maybe a quicker version of the “larger” SIMs), you are, unfortunately, stuck with it.
The new Q24Plus modules appear to be lightning quick to do “ADL_SIM_EVENT_FULL_INIT” which is fantastic, but it only seems to work on the older “32K” SIMs that are no longer supplied by Vodafone NZ. Vodafone NZ now only supplies “3G” 128K SIMs, and these have a roughly 30 second latency before ADL_SIM_EVENT_FULL_INIT is acheived - the difference is light years apart!
Can anyone explain what the FULL init us actually doing? I presume a full scan of all SIM memory. Why is a Full init required before GPRS can be attached to?
I don’t think this is an operator issue - there is no network interaction during SIM full init?
Can wavecom or anyone who has contact with wavecom comment on a work-around or if a patch is forthcoming?
This is issue seriously detracts from the useability of their platforms since it introduces an unnecessary 30s delay before the modem can even attach to GPRS.