We have older procuct using the SL8084 and some newer product using the SL8084BTR. We are finding that the PDP profile for GPRS can be any value in the SL8084 but must be profile 1 in the SL8084BTR.
eg both have at
+CGDCONT?
+CGDCONT: 1,“IP”,“telstra.internet”,"",0,0
+CGDCONT: 2,“IP”,“telstra.internet”,"",0,0
and both respond with “OK” to the “at!SCACT=1,2” and have
at+CGACT?
+CGACT: 1,0
+CGACT: 2,1
at!SCACT?
!SCACT: 1,0
!SCACT: 2,1
but only the SL8084 has a network connection. The SL8084BTR does not.
Is this expected behaviour? Are there other configuration parameters that need to be set correctly for the Sl8084BTR to work with profile 2?
As I understand it all ‘T’ suffixes have the OpenAT feature but we are not using it, just the basic modem functions.
Does the OpenAT firmware restrict the profile usage?
We are not in a position to do field upgrades of the modem firmware.
In any case, I want to know if there is meant to be a difference between them or if it just a matter of configuration.
There are many hundreds of units in the field and we don’t have a way of updating the firmware in the modems.
Our workaround is to use profile 1 everywhere. I am just trying to establish why it is necessary. Your clue that “profile 2 is routed to the OAT FW” is great, it explains a lot. Sierra Wireless didn’t tell us about that when they started shipping us SL8084BTR instead of SL8084. We only found out that they differ recently when our firmware started trying to use profile 2.
Do you know of a document that explains the differences between SL808x and SL808xBTR ? A migration document for instance? I have searched Sierra Wireless web site but I couldn’t find anything.
No. We have a work-around: Use profile 1 everywhere.
My concern was: Why do they differ in their behaviour? I think you’ve answered that: OpenAT
Now my concern is: What other differences are there that I don’t know about?
I’d like to find a Sierra Wireless migration document so I don’t get caught out again.
OK. At the time the SL8084 become obsolete and Sierra Wireless began shipping SL8084BTR instead, the implication was that no functionality changed. Indeed, in the years since we haven’t noticed anything different until now.
I just wonder what else is waiting to bite us. For example, an indication that profile 2 is reserved for OpenAT would have been good.
Yes. That’s what happened. Our firmware (not the modem) had a configuration specifying profile 2 (a bug it should have specified 1), but early code didn’t use the item. A recent upgrade to our firmware, that started making use of this item, worked on some units and not on others. The fix is use 1 everywhere but I’m trying to work out what happened and if it can happen again.
AIRPRIME SL808X . The AirPrime SL808x offers HSDPA connectivity and quad-band. GSM/GPRS/EDGE network access for 192.168.l.254 global coverage. It natively supports.