[RFC] Initial support for the new MC74XX modules

[Jerry Hicks]

Thanks Aleksander,

It seems likely that my former colleague at Itron, Tyler Smith, got it working somehow but I understand he is off to other things now.

Verizon had explained their IMS architecture to us some time ago. According to that discussion, text messaging for LTE now happens exclusively over IPv6 on the VZWIMS APN.

No old-school SMS available now but for the trouble I believe you get multipart messages with much longer messages possible.

This functionality would all be really great for M2M applications, my area of interest.   

Another capability needed is a “call home” message to establish IP connectivity with a remote cellular device when direct mobile termination isn’t possible.

We have to make this work somehow over here so I will post back with our findings if we are able to make any progress.   I think it may require a bit of new plumbing.

Oops, didn’t mean to hijack your MC74xx thread.   I think maybe I am now required to obtain one to make good.  Wonder if they have passed muster with Verizon certification gods yet..

Best,

Jerry.


> On Dec 29, 2015, at 4:10 PM, Aleksander Morgado <aleksander at aleksander.es> wrote:
> 
> Hey Jerry :)
> 
> On Tue, Dec 29, 2015 at 7:26 PM, Jerry Hicks <jhicks at camgian.com> wrote:
>> Wondering what you might think about text messaging on Verizon's LTE with the MC74XX modules?
>> 
>> As I loosely understand things, Verizon requires a connection to their IPv6 VZWIMS network for text messaging on LTE to work.
>> 
>> I can't seem to find anyone at Verizon able to give up useful information regarding configuration/credentials to make it fly with the MC7354/ModemManager setup we are developing with.
>> 
> 
> I have never really played with SMS over LTE-only in Verizon, truth be
> told, and don't remember whether the QMI messaging requests say
> something about how that should be handled. Does someone know
> something about this?
> 
>> Shifting to CDMA operation, the MM messaging API works fine with the MC7354.
>> 
> 
> Oh, that's good :)
> 
>> If you think the MC74XX might improve our lot with respect to text messaging we might make a shift.
> 
> No idea in that regard, sorry.
> 
> -- 
> Aleksander
> https://aleksander.es