Telephony for a mobile office?

Question

Telephony

Advise services and ways to implement telephony for a mobile office.
You need a Moscow number and an American number, if possible, other countries.
Forwarding will go to Moscow mobile numbers.
Thanks in advance.

Answer 1

The Moscow number is, for example, in this topic (and not only - look here by company names). The US number can be obtained from Google Voice. Both options are forwarded to sip and land on mobile.

Answer 2

Look here for example here:

Answer 3

The ideal is your own server with Asterisk: then you can squeeze the maximum out.
It has a couple of E1550 modems - and you can receive incoming calls from mobile or AlloIncognito.
Plus a channel to the Internet - and you can use DID numbers in different countries.
Plus a few “anlim sims” (A-Mobile 2010 - in Moscow and the region 150 rubles a month for unlimited calls to other a-mobiles) - and the communication between the PBX and office workers is already unlimited.