Retrieve the official files from asterisk.org, extract and change directories. Source: 12 months ago

Perhaps asterisk / FreePBSX or similar would suite your goals? asterisk.org. Bit of a learning curve, but there is lots of documentation and examples too. Source: about 2 years ago

Asterisk? Foss telephoniserver, been around for a long time so mature and solid https://asterisk.org. Source: over 2 years ago

These are all just sound files, and from what I can recall I'd bet at least 97% are the standard Asterisk (open source PBX software) set (probably core perhaps plus some extras en + es for some). -- It's certainly Alison's voice, and and all the same jokes are there (e.g. zombies, lotso-monkeys). Source: over 3 years ago

Not OP, and they said what they use (Red Pocket) but I also pay $5/mo for service from Tello ( https://tello.com/ ). 500MB/mo, data only, calls through Google Voice via data. (100 minutes of voice $1/mo extra.) Lots of choice in building your own plan. - Source: Hacker News / 7 months ago

Happy with Tello: https://tello.com/. - Source: Hacker News / 8 months ago

Https://tello.com/ Unlimited on tello is 25gb of data. Source: 11 months ago

I'm on Mint and happy with it, live in Arlington VA and work in Downtown DC. As of last year you could sign up for Visible for a month and cancel. If you don't need fully unlimited data, i.e. Where you are staying will provide internet, a provider like tello.com might be good where you can customize your minutes and data (US Mobile has similar). Source: about 1 year ago

For US calling, if you have a supported phone, you can also sign up for a cheap US provider like Tello and pay $8/month for unlimited US calls and texts on a secondary SIM. Turn on wi-fi calling on the US SIM and make calls using your Canadian data. When you go to the US, add a gig of data for the cost of 2 Rogers US minutes. That's one of many similar US providers discussed in depth here. Source: about 1 year ago