<div dir="ltr">Or you can go get an interconnect with each carrier so they can hand off to you in AMR-WB, but we don't have the codec, so thats a bust too.<div><br></div><div>/b</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Dec 5, 2016 at 8:26 AM, Francis <span dir="ltr"><<a href="mailto:sms@icefire.qza.net.au" target="_blank">sms@icefire.qza.net.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Basically, you want voice on LTE, confirmed in the specifications. Most<br>
of these cards are still using 3G/umts for voice, even though they use<br>
LTE for data. They are often used in laptops and tablets. Think<br>
Sierra/Qualcomm, Huawei, uBlox etc. There's lots of them.<br>
<span class="HOEnZb"><font color="#888888"><br>
Francis<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
On 5/12/2016 10:11 PM, Oivvio Polite wrote:<br>
> On mån, dec 05, 2016 at 09:46:08 +1000, Francis wrote:<br>
>> One option is using mini-PCIe WAN cards that are VoLTE capable, using<br>
>> the I2S bus for bidirectional digital audio. The sticking point with<br>
>> this approach is that you need a backplain card with an I2S to USB<br>
>> bridge in order to capture the audio. This would probably work best with<br>
>> mod-gsmopen.<br>
>><br>
>> I searched high and low for such a thing, and managed to find one<br>
>> Russian firm that had a single slot device. The downside is that it is<br>
>> horrendously expensive (about $400 euros from memory), considering it<br>
>> only has about $5 worth of components on it. There are proprietary<br>
>> backplains, but so are their connectors, which limits you to their own<br>
>> line of daughter cards.<br>
>><br>
>> Francis<br>
>><br>
> Thanks!<br>
><br>
> When we say that a card is VoLTE capable, what do we mean? Is VoLTE one<br>
> or many different protocols? Or to put it another way: When I google<br>
> these WAN cards what should I look for?<br>
><br>
> Oivvio<br>
><br>
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<p><font face="courier new, monospace"><b><i><font size="4">Brian West</font></i></b><br><span style="font-size:x-small"><a href="mailto:brian@freeswitch.org" target="_blank">brian@freeswitch.org</a></span></font></p>
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