[asterisk-users] Iridium integration / gateway

Jean-Denis Girard jd.girard at sysnux.pf
Wed Apr 4 16:36:47 CDT 2018

Hi Tim,

The PotsDOCK is what I was looking for. I'll propose that to my customer.

My use case is an airway company, who needs Iridium for safety reasons,
but does not want to be stuck with only one handset, so the idea is to
connect the handset to the asterisk PBX, so they can call from any desk

Many thanks for detailed answer.

Best regards,
Jean-Denis Girard

SysNux                   Systèmes   Linux   en   Polynésie  française
https://www.sysnux.pf/   Tél: +689 / GSM: +689 87.797.527

Le 03/04/2018 à 20:25, Tim S a écrit :
> Hi, I use an Iridium 9555 handset and a "POTSdock".
>        This takes a standard 9555 handset, gives it a fixed antenna
> mount, and a telco service jack.  Interfacing to the POTSdock, is a
> matter of providing an analog POTS interface as if you were attaching
> to a standard POTS phone provider.  The dock generated standard
> dial-tone and DTMF control.  Iridium provides a test phone number you
> can make calls from, and there are serial commands you can issue to
> the handset to get service status, and account information, or Iridium
> voicemail status.  Be aware that rates are and order or two or three
> of magnitude higher than most POTS providers.  Minutes can be in the
> multiple USD each range.
> I generally do my VoIP as a cost routing:
> 1st, Cable modem (unlimited data, business internet)
> 2nd, Cellular Data (data unlimited to 25GB/month, then rate reduced to
> 5GB/month rate)
> 3rd, Cellular Voice (unlimited minutes, lower voice quality due to CODEC change)
> 4th, Iridium Voice (expensive minutes, lowest voice quality due to
> CODEC change, very high voice lag 1-3 seconds, more likely to work
> while everything else is down locally)
> If you want to roll your own embedded VoIP system, the Iridium 9523
> modem engine is available as a module at retail, and takes the same
> basic serial commands to establish voice or data calls.  The
> development manuals are available with a Google search.  Be aware that
> FCC or ITU certification is required if you embed an RF module in an
> end product - which is why I went the POTSdock route.
> I also use the SBD modem modules (both 9603 and 9602) to do basic
> telemetry and status reporting when conventional network access is
> limited.  The rates for sending a partial packet of data are very
> reasonable, and you can message from modem directly to another modem
> without traversing the commercial internet or phone infrastructure.
> Very useful for rebooting a remote router that has crashed and is
> blocking phone or internet access. ;-)
> If you've been following the news, SpaceX has been lofting the
> IridiumNEXT constellation to replace the legacy constellation from the
> 1990's (STILL running a good 20 years past design life) - and they are
> expecting to modernize their subscriber equipment and rate plans.
> They have three more launches to get the complete replacement
> constellation in orbit, and they will be fixing the periodic dead
> spots in their network as a result.
> I can try to answer questions on my use case.
> Best,
> -Tim
> On Tue, Apr 3, 2018 at 10:01 PM, Jean-Denis Girard <jd.girard at sysnux.pf> wrote:
>> Hi list,
>> I have a request to integrate Iridium in a Asterisk system. A quick
>> search didn't return much: I expected to find products similar to GSM
>> gateways, but this does not seem to exist. so I'd be very interested
>> about possible solutions. Has it be done already, how?
>> Thanks,
>> --
>> Jean-Denis Girard
>> SysNux                   Systèmes   Linux   en   Polynésie  française
>> https://www.sysnux.pf/   Tél: +689 / GSM: +689 87.797.527
>> --
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