Hi, Donna:

Yes, as you need PSTN support, I can be a little more specific. You need
two pieces, a software application that will work accessibly on your
Mac, and a gateway service that your Mac can register with that will
carry calls back and forth to the PSTN.

1.)     On the app side I would suggest checking out an app called Bria:


http://www.counterpath.com/bria/


I have not used this app myself, but a colleague who I trust has it on
his Iphone and is very satisifed with the performance as well as the
accessibility.

Perhaps there might be others on the list who have some experience with
Bria?

Among other things, Bria does support IPv6 connectivity, though this is
rather a mixed blessing because there's only one service provider I'm
aware of who supports IPv6. More on that below.

I get away with insisting on IPv6 because I also run my own PBX on a
remote server in the cloud. To some extent that's a fancy way of saying
I'm being my own phone company for myself. I'm doing that with an
application called Asterisk.

The reason you might seriously care about this is that configuring your
router to properly support your phone calls can become annoyingly
complicated under traditional IPv4, where you have to insure you've
gotten your NAT rules correctly configured. This is probably only going
to be an issue, though, if you have more than one device using SIP,
though there's some work even for one device. SIP wants lots of ports,
5060-5080 inclusive for SIP itself, then 10000-20000 for the RTP part,
which is where the actual two way audio goes.

Now having said all this, another possible solution is Magic Jack. I've
not used it either, but I understand it's quite trivial to use. I know a
number of people who are by no means technical who are happily using
Magic Jack for their phone calls. However, none of these folks requires
accessibility, so I don't know about that--though I suspect all the
Magic Jack smarts are in the USB device itself, so it's likely simple to
manage.

Magic Jack is also very cost effective.

2.)Service Providers

If you go the Magic Jack route, you have service builtin. If you go the
Bria route, you need a contract with someone. Each of the services below
are good choices. They're all pay in advance services. You pay in some
money then spend down your balance making calls. I believe all of these
services have flat rate monthly plans, though I'm paying by the call.

The technical term for getting a phone number is "buying a DID." That's
what you want, a DID.

My current service is Vitelity, where I pay $1.49 per month for each
phone number, except for my 800 number, which is a bit more, though not
much more--I'm sorry I don't remember exactly. Then I pay per call at
the rate of approximately 1.3 cents per minute. International calls
outside of North America are more, though usually not more. Example:
Europe is generally 2.1 cents per minute.

I get these prices because I'm not relying on them for voice mail, or to
be my PBX. All they're giving me is a phone number and routing.

Vitelity's web page is usable, but it's really an accessible horror.

Here are some service options:

1.)     Call With Us:
        http://callwithus.com/

        This is the only gateway service provider I know of that
        supports IPv6. Also, they're very friendly to individuals like
        you and me, as opposed to business clients who might buy bigger
        blocks of connectivity. Their web pages are also very
        accessibility friendly.

        The only reason I'm not on their service is that they don't
        support LNP, which stands for "Local Number Portability." This
        is where you get to keep a phone number you already have with
        someone else. If you're OK with getting a new phone number, go
        with these folks.

2.)     Flo Route:
        https://www.flowroute.com

        It's business oriented and fairly technical, but it's a 
        good service. Web interface is very workable last I used it.

3.)     Vitelity.net
        http://vitelity.net

                They recently changed their web interface for the worse,
                imo. I have not tried to use it with Safari, but I know
                it works with Google Chrome on the Mac, because that's
                how I made my last payment there. Firefox on Linux did
                NOT work, as it had been working for years. Otherwise, I
                have no complaints.

4.)     Broadvoice
        https://www.broadvoice.com/

Another service mostly aimed at small business.

5.)     Master List of Providers
        https://www.voip-info.org/wiki/view/VOIP+Service+Providers

        This web site is the goto place to learn about voip in all
        respects. Prepare to spend some time there.

So, this should get you started. Please don't hesitate to ask questions
about any of this. I expect it's a bit overwhelming, so I expect you'll
have questions.

Meanwhile, have a most Merry Christmas!

Janina

Donna Goodin writes:
> Hi Janina,
> 
> Thanks so much for taking the time to write such a comprehensive response.  
> It was well worth the wait. :)
> 
> It sounds like my needs are very similar to yours.  I, too, need a specific 
> phone number that clients can call, and would like to be able to receive 
> calls from anywhere, either on my Mac or my iPhone..  I don't need a group 
> platform, such as that of Zoom.  I currently use Skype, and yes, it does 
> allow for making and receiving calls from the PSTN. But I have become unhappy 
> with the changes Microsoft has implemented in the interface, so have begun to 
> look at other options.  I like FaceTime, but it has the limitations that you 
> mentioned, and Also does not allow one to obtain a separate phone number.
> 
> It sounds like the solution you use runs under Linux, not Mac.  Am I reading 
> that correctly?
> 
> Again, thanks for taking the time to write such a lengthy answer to my 
> question.
> Cheers,
> Donna
> 
> 
> > On Dec 26, 2017, at 3:07 AM, 'Janina Sajka' via MacVisionaries 
> > <macvisionaries@googlegroups.com> wrote:
> > 
> > Hi, Donna:
> > 
> > My apologies for the slow response. I've been distracted by noncomputer
> > responsibilities these past few weeks.
> > 
> > To answer your question  I'd need to know a bit more what your needs
> > are. Let me explain:
> > 
> > Probably the most widely known soft phone is Skype. Howegver, I myself
> > don't use Skype. Depending on your platform, you might find Skype
> > accessible--or not. For instance it's not accessible on Linux today.
> > 
> > On Apple products we have Face Time. I've used it slightly, and my
> > experience suggest it's accessibility is excellent.
> > 
> > There are other soft phone clients that people use for voice communications 
> > such as Face Book's Whatsapp, or
> > Cisco's GoToMeeting or their Webex product. Accessibility of these
> > varies from very accessible, e.g. Webex on Android, to not very
> > accessible for anyone even when you're not using assistive technology,
> > e.g. Webex on Mac.
> > 
> > Now, my situation is somewhat different. I have the particular
> > requirement for an old fashioned phone number. I need the ability to
> > recieve calls from any phone anywhere, and to call any traditional
> > telephone number anywhere. I do this in two ways using the SIP protocol
> > and a gateway service that routes calls between my SIP devices and the
> > standard telephony world, usually abrieviated PSTN, which stands for
> > "Public Switched Telephone Network."
> > 
> > 1.) I have hard ware devices that look all the world like old
> > fashioned telephones, but they're different. They're hardware SIP
> > phones, and they connect over computer type network cables--what we call
> > Cat5 (or Cat6) ethernet cables.
> > 
> >     My current device of choice is the Snom D715, primarily because
> >     it's able to use IPv6, where Polycom phones do not. I have not
> >     investigated use of the SIP handsets from Digium--though they're
> >     on my list to look at the next time I'm in the market for a
> >     hardware phone.
> > 
> >     2.)     I use linphone, and sometimes the fs_cli application
> >     provided by FreeSwitch on my Linux computers for placing and
> >     recieving SIP calls. This functionality is critical to my work
> >     because it allows me to use a high quality headset that connects
> >     to my computer using USB, and still allows me to route the audio
> >     through a 12 channel audio hardware mixer on my desk. This way
> >     I'm able to have my screen reader as well as my telephone
> >     conversation in my ears, without the people I'm talking with
> >     hearing my screen reader.
> > 
> > Of course SIP phones can be used to place direct calls to other SIP
> > phones, just like Skype and FaceTime calls can be made to others who are
> > also using Skype or FaceTime. I believe Skype also provides the ability
> > to call to and from the PSTN, but I don't know anything specific about
> > that, or about any similar functionality among the other soft phones
> > mentioned.
> > 
> > The biggest problem with all these services is that they don't
> > interoperate natively, e.g. Webex can't call FaceTime, or vice versa.
> > The standards world is hoping to solve this with specifications called
> > WebRTC. Time will tell how that goes.
> > 
> > Hope this helps!
> > 
> > Janina
> > 
> > 
> > Donna Goodin writes:
> >> Hi all,
> >> 
> >> I'm directing this question to Janina as she mentioned using a soft phone, 
> >> but would be interested in hearing from anyone else who uses one.
> >> 
> >> Can anyone recommend good accessible soft phone options?
> >> TIA,
> >> Donna
> >> 
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> > -- 
> > 
> > Janina Sajka,       Phone:  +1.443.300.2200
> >                     sip:jan...@asterisk.rednote.net
> >             Email:  jan...@rednote.net
> > 
> > Linux Foundation Fellow
> > Executive Chair, Accessibility Workgroup:   http://a11y.org
> > 
> > The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
> > Chair, Accessible Platform Architectures    http://www.w3.org/wai/apa
> > 
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-- 

Janina Sajka,   Phone:  +1.443.300.2200
                        sip:jan...@asterisk.rednote.net
                Email:  jan...@rednote.net

Linux Foundation Fellow
Executive Chair, Accessibility Workgroup:       http://a11y.org

The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair, Accessible Platform Architectures        http://www.w3.org/wai/apa

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