# FAQ forum/wiki?

**URL:** <https://forum.sierrawireless.com/t/faq-forum-wiki/3491>\
**Category:** Forum and Source related topics\
**Created:** [July 26, 2009, 1:12am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491 "2009-07-26T01:12:24Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![davidc](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@davidc](https://forum.sierrawireless.com/u/davidc)\
**Post date:** [July 26, 2009, 1:12am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/1 "2009-07-26T01:12:24Z")

</div>

Hiya,

Does anyboy else think that it would be a good idea to have a FAQ area on either the Forum or Developer’s website?

I’ve noticed that the same questions are asked (and answered) over and over again. Topics like

- I can’t find the SDK on the Wavecom website
- How do I download firmware to the Wavecom Supreme using DWLWin

are just two that occur off the top of my head.

There’s an absolute wealth of info in the forum now, and it would probably be a good idea to abstract the common issues out to a single place.

ciao, Dave

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [July 26, 2009, 6:17am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/2 "2009-07-26T06:17:21Z")

</div>

> [@davidc](#):
>
> Does anyboy else think that it would be a good idea to have a FAQ area on either the Forum or Developer’s website?

There is already a FAQ area on the developer’s website:

[wavecom.com/modules/movie/sc … n=listFaqs](http://www.wavecom.com/modules/movie/scenes/developers/index.php?fuseAction=listFaqs)

Trouble is, it’s hard to find, hard to use, and the information is pretty sparse and out-of-date.

> [@](#):
>
> I’ve noticed that the same questions are asked (and answered) over and over again.

Very true.

> [@](#):
>
> Topics like
> 
> - I can’t find the SDK on the Wavecom website

I think that’s just because the website design is poor. The website needs to be fixed!

> [@](#):
>
> - How do I download firmware to the Wavecom Supreme using DWLWin

And, as I’ve often said, that should be clearly documented in the “mainstream” documentation - not buried in a FAQ.

I do think that a FAQ is a good idea - but it mustn’t be used as an excuse for not fixing “mainstream” documentation…

eg, see:

[viewtopic.php?f=47&t=1135](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=47&t=1135)

[viewtopic.php?f=78&t=3437](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=78&t=3437)

---

<div class="post-metadata">

**Author:** ![davidc](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@davidc](https://forum.sierrawireless.com/u/davidc)\
**Post date:** [July 27, 2009, 2:47am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/3 "2009-07-27T02:47:03Z")

</div>

Hiya,

> [@awneil](#):
>
> There is already a FAQ area on the developer’s website:
> 
> [wavecom.com/modules/movie/sc](http://www.wavecom.com/modules/movie/sc) … n=listFaqs
> 
> Trouble is, it’s hard to find, hard to use, and the information is pretty sparse and out-of-date.

There you go - I didn’t know it existed. And yes, it is all of the above (lots of references to OAT-3.00!).

> [@awneil](#):
>
> I do think that a FAQ is a good idea - but it mustn’t be used as an excuse for not fixing “mainstream” documentation…

Exactly - although an electronic FAQ can be updated/maintained quicker/easier than the mainstream doco that is bundled with a Release.

Jamie - any thoughts?

ciao, Dave

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [July 29, 2009, 1:55pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/4 "2009-07-29T13:55:22Z")

</div>

The use of AT+CMEE=1 to get extended error info is certainly one for the FAQ

[viewtopic.php?f=16&t=3780&p=14663#p14663](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=16&t=3780&p=14663#p14663)

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [July 30, 2009, 3:34pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/5 "2009-07-30T15:34:36Z")

</div>

- The dependence of certain facilities on having specifc “Commercial Features” enabled;
- The trick of having a startup delay in your application - and all samples should do this

Although the 1st one is another that should be properly documented in the “main” documentation - not just buried in a FAQ.

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [September 22, 2009, 12:54pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/6 "2009-09-22T12:54:20Z")

</div>

The need to enable USB (and UART2) before it can be used:

[wavecom.com/modules/movie/sc … 518#p15518](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=29&t=3948&p=15518#p15518)

Update (2010):  
R7.4 (and later) opens the USB port automatically - this is a change from earlier firmware.

---

<div class="post-metadata">

**Author:** ![davidc](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@davidc](https://forum.sierrawireless.com/u/davidc)\
**Post date:** [September 23, 2009, 12:20am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/7 "2009-09-23T00:20:58Z")

</div>

Another one: Connecting to I/O pins on Q2686 etc

[viewtopic.php?f=29&t=3942&start=0](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=29&t=3942&start=0)  
[viewtopic.php?f=78&t=3946&start=0](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=78&t=3946&start=0)

ciao, Dave

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [September 23, 2009, 1:09pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/8 "2009-09-23T13:09:21Z")

</div>

[viewtopic.php?f=5&t=3941&p=15544#p15544](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=5&t=3941&p=15544#p15544)  
[viewtopic.php?f=21&t=3950&p=15542#p15542](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=21&t=3950&p=15542#p15542)

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [October 1, 2009, 9:56am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/9 "2009-10-01T09:56:47Z")

</div>

> [@many people](#):
>
> atd_99_\*\*1#  
> CONNECT 115200  
> ~ÿ}#À!}!}!} }6}!}$}%Ü}“}&} } } } }'}”}(}“}#}$À#&´~~ÿ}#À!}!}!} }6}!}$}%Ü}“}&} } } } }'}”}(}"}#}$À#&´~~ÿ}#À!}!}!} }6}!}$}%Ü}”}&} } } } }‘}“}(}”}#}$À#&´~~ÿ}#À!}!}!} }6}!}$}%Ü}“}&} } } } }'}”}(}"}#}$À#&´~~ÿ}#À!}!}!} }6}!}$}%Ü}"}&} } } } }’}“}(}”}#}$À#&´~~ÿ}#À!}!}!} }6}!}$}%Ü}“}&} } } } }'}”}(}"}#}$À#&´~~ÿ}#À!}!}!} }6}!}$}%Ü}“}&} } } } }'}”}(}“}#}$À#&´~~ÿ}#À!}!}!} }6}!}$}%Ü}“}&} } } } }'}”}(}"}#}$À#&´~~ÿ}#À!}!}!} }6}!}$}%Ü}”}&} } } } }‘}“}(}”}#}$À#&´~~ÿ}#À!}!}!} }6}!}$}%Ü}"}&} } } } }’}“}(}”}#}$À#&´~  
> NO CARRIER
> 
> 1. Why this NO CARRIER is comming?

eg, [viewtopic.php?f=37&t=3986&p=15720#p15717](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=37&t=3986&p=15720#p15717)  
[viewtopic.php?f=30&t=2275&p=9244#p8408](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=30&t=2275&p=9244#p8408)

It’s not “garbage” - it is PPP data.  
The module has been asked to create an IP connection, so it expects the external device to respond with IP packets in PPP format.  
Because it doesn’t get any PPP/IP packets, it drops the call - hence giving NO CARRIER.

The modem is working correctly!

---

<div class="post-metadata">

**Author:** ![davidc](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@davidc](https://forum.sierrawireless.com/u/davidc)\
**Post date:** [October 16, 2009, 6:57am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/10 "2009-10-16T06:57:43Z")

</div>

Hiya,

Don’t use the following code construct:

```auto
while(1)
{
    // do something
}
```

See [viewtopic.php?f=36&t=3908&start=15#p16093](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=36&t=3908&start=15#p16093) amongst others.

ciao, Dave

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [November 11, 2009, 8:28am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/11 "2009-11-11T08:28:51Z")

</div>

> [@awneil](#):
>
> - The dependence of certain facilities on having specifc “Commercial Features” enabled;

See also: [viewtopic.php?f=23&t=3922&p=16688#p15350](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=23&t=3922&p=16688#p15350)

Example: [viewtopic.php?f=16&t=4204&p=16686#p16686](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=16&t=4204&p=16686#p16686)

---

<div class="post-metadata">

**Author:** ![davidc](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@davidc](https://forum.sierrawireless.com/u/davidc)\
**Post date:** [November 11, 2009, 11:38pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/12 "2009-11-11T23:38:37Z")

</div>

Hiya,

Looks like a number of users are having strange or intermittent issues with their modules that end up being resolved by fixing the module PSU.

See [here](http://www.wavecom.com/modules/movie/scenes/forums/posting.php?mode=reply&f=16&t=4056#pr16703) and [here](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=29&t=4162) for a couple of examples.

Of course, there’s also the Power Supply forum to peruse as well.

ciao, Dave

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [November 12, 2009, 8:07am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/13 "2009-11-12T08:07:30Z")

</div>

> [@davidc](#):
>
> Looks like a number of users are having strange or intermittent issues with their modules that end up being resolved by fixing the module PSU.

Yes, I’ve had such issues myself!

It’s not just the PSU itself - the connections to the module (especially ground) need to be absolutely “solid”

Example: [viewtopic.php?f=123&t=5693&p=23827&hilit=vbatt+line+too+narrow#p23826](https://forum.sierrawireless.com/viewtopic.php?f=123&t=5693&p=23827&hilit=vbatt+line+too+narrow#p23826)

This is because all GSM devices have a very high supply current peaks - Wavecom quote over 2A! 😮

Edit:   
Just noted that I have already mentioned “[Module Grounding](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=7&t=3766#p15545)” in an earlier suggestion in this thread!

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [November 12, 2009, 9:32am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/14 "2009-11-12T09:32:27Z")

</div>

An increasing number of people are now asking about C++

eg,

[viewtopic.php?f=19&t=4146&p=16728#p16728](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=19&t=4146&p=16728#p16728)

[viewtopic.php?f=78&t=4201&p=16652#p16626](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=78&t=4201&p=16652#p16626)

[viewtopic.php?f=78&t=3082&p=12149&hilit=extern#p12149](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=78&t=3082&p=12149&hilit=extern#p12149)

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [November 28, 2009, 8:05am UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/15 "2009-11-28T08:05:37Z")

</div>

> [@awneil](#):
>
> > [@awneil](#):
> >
> > - The dependence of certain facilities on having specifc “Commercial Features” enabled;
> 
> See also: [viewtopic.php?f=23&t=3922&p=16688#p15350](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=23&t=3922&p=16688#p15350)
> 
> Example: [viewtopic.php?f=16&t=4204&p=16686#p16686](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=16&t=4204&p=16686#p16686)

Another example: [viewtopic.php?f=74&t=4252&p=17077#p17075](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=74&t=4252&p=17077#p17075)

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [November 28, 2009, 2:16pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/16 "2009-11-28T14:16:14Z")

</div>

> [@awneil](#):
>
> An increasing number of people are now asking about C++
> 
> eg,
> 
> [viewtopic.php?f=19&t=4146&p=16728#p16728](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=19&t=4146&p=16728#p16728)
> 
> [viewtopic.php?f=78&t=4201&p=16652#p16626](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=78&t=4201&p=16652#p16626)
> 
> [viewtopic.php?f=78&t=3082&p=12149&hilit=extern#p12149](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=78&t=3082&p=12149&hilit=extern#p12149)

And another: [viewtopic.php?f=78&t=4285&p=17090#p17088](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=78&t=4285&p=17090#p17088)

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [December 11, 2009, 10:50pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/17 "2009-12-11T22:50:43Z")

</div>

If the unit fails to register, check the Frequency Band setting - especially after a firmware update

see: [viewtopic.php?f=53&t=4332#p17345](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=53&t=4332#p17345)

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [December 11, 2009, 10:52pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/18 "2009-12-11T22:52:07Z")

</div>

> [@awneil](#):
>
> The need to enable USB (and UART2) before it can be used:
> 
> [viewtopic.php?f=29&t=3948&p=15518#p15518](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=29&t=3948&p=15518#p15518)

But note that R7.4 opens the USB port automatically - this is a change from earlier firmware.

---

<div class="post-metadata">

**Author:** ![davidc](https://avatars.discourse-cdn.com/v4/letter/d/a183cd/32.png) [@davidc](https://forum.sierrawireless.com/u/davidc)\
**Post date:** [January 1, 2010, 11:16pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/19 "2010-01-01T23:16:53Z")

</div>

Hiya,

Yet another common problem: Trying to make calls/connect to GPRS before SIM is initalised and network registered.

Always check SIM state and Network Registration before attempting network operations.

Check for SIM\_FULL\_INIT and +CREG: 1 responses…

See:  
[viewtopic.php?f=3&t=3422](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=3&t=3422&p=17707#p17691)  
[viewtopic.php?f=29&t=3975](http://www.wavecom.com/modules/movie/scenes/forums/viewtopic.php?f=29&t=3975&start=0)  
for a couple of examples

ciao, Dave

---

<div class="post-metadata">

**Author:** ![awneil](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@awneil](https://forum.sierrawireless.com/u/awneil)\
**Post date:** [January 1, 2010, 11:55pm UTC](https://forum.sierrawireless.com/t/faq-forum-wiki/3491/20 "2010-01-01T23:55:51Z")

</div>

> [@davidc](#):
>
> Trying to make calls/connect to GPRS before SIM is initalised and network registered.

In fact, trying to do anything network-related before the network is ready!

SMS is another key one…

This one, of course, is not Wavecom-specific.

[Next page](https://forum.sierrawireless.com/t/faq-forum-wiki/3491.md?page=2)