Hello,
So I have a Motorola SM56 USB Data Fax Modem (aka Apple USB Modem for some people) and according to information online this modem supports V.92, Caller ID, wake-on-ring and most importantly telephone answering (V.253).
At a place I happen to have an old telephone analog line that gets calls and unfortunately I can’t get rid of. Any ideias / links / software on how can I use the modem + a low end box / ARM SBC to “digitize” the phone line into a generic SIP / VOIP that I can then connect to using MicroSIP on another computer?
Thank you.
Does a SIP ATA work for you? You could probably get an old phone card and use that to convert the call to SIP but honestly I’d spend the 80 bucks on a separate box that’ll do all that for you. Some of the options even have a WiFi antenna.
I found this one but it seems to do the opposite of what I need.
Look at the HT318
Thanks for the tip, that model clearly says it supports it… then there’s https://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht813 that should work but the wording on the website isn’t that clear.
Even if overkill I guess I’ll go with the HT318. Thanks.
I wouldn’t call it overkill honestly, it’s just the right tool for the job :) I have some of their gear and I’m happy enough with it.
Well I don’t need 8 ports :P
Yeah something like the Grandstream HT813 seems like what OP wants. It’s like 65 USD, and has both and FXO and an FXS. It’ll be a whole lot less trouble, and more reliable, than a patchy solution.
Plus one for asterisk, very easy to set up in a secure fashion.
Why can’t you have your phone provider convert your service to digital? If they provide cell service too, you might even get them to port the number to cell service.
Close to no cell service in the location, let alone optic fiber or any other means. Stuck with an analog landline that does ADSL at around 3.5 Mbps.
I’d still start by calling your provider and see what they think. They might jump at the chance to get rid of an old analog line.
Though I will warn you that IP telephony, while generally reliable, is still not as reliable as POTS. If this is critical to life safety, I’d just not mess with it.
I’m not aware of any software to do that, but I’m sure it exists. If you want to buy a device, you can get an FXO gateway or hybrid ATA. Those will let you use a VoIP phone over a POTS line, I think.
Also, if you already have Internet access, perhaps you might get a femtocell to provide local cell service over that ADSL connection.
I’d still start by calling your provider and see what they think. They might jump at the chance to get rid of an old analog line.
Tried that route, they offered us a free cellphone line for a month and the thing was working around 2-3 hours a day around the middle of the day. They simply gave up and told me that they didn’t have other options on that location.
FWIW, Linux has very poor support, if at all, for softmodems. I think the apple modem is one. But if not and it shows up fine in the devices, then what the other person said!
There used to be quite a few softmodems that could be made to work in Linux. The problem is that most of the drivers have been unmaintained for 15-20 years.
While that’s true, that doesn’t change what I said. The current state of softmodems in Linux is basically non existent. That’s fine, soft modems kind suck anyway ;)
