Using a protocol called SIP, you can cheaply and easily use Jitsi to
make PC to landline calls. There are literally hundreds of SIP providers
out there all of differing costs. Almost all of them offer a PAYG model
or you can purchase 'packages' which include a set number of minutes or
no limits at all. For example, I use a service called 'Localphone'
which gives me 5,000 outbound PC to phone calls for only $5.00 USD per
month. You can also pay by the minute if you want. Other options are
Callcentric, Flowroute, voip.ms, and many others. Do a search for
'Outbound SIP provides' to get a feel for what's out there.
Most SIP providers (or, at least, many) can also offer you inbound phone
numbers along with their services if you want that.
Now, as to security, you cannot make a PC to landline call securely.
Regular telephones are not equipped to handle encrypted communications
and, thus, all communication is done insecurely. However, if you want to
make PC to mobile phone calls securely, you can download software like
Signal, Wire, etc, that will allow you to communicate using encrypted
voice so there's that. But, like I said, that won't work for regular
Hope this answers your question.
On 8/5/2016 6:51 PM, F wrote:
With Gizmo bought out by Google on Adium I was looking for an
alternative way to switch from Skype to make landline calls. I don't
fancy the Black Phone from Silent Circle as its a monthly subscription,
I wanted a pay-as-you-go credit style system, can Jitsy be configured to
make landline calls on OS X securely (e.g. OTR)?