Telephony for an online store, how and on what to implement?

Question

Telephony

Asked a question of telephony for an online store.
I understand the topic superficially, I used to use a direct mobile number.
If the question is not written correctly, please do not kick)
Requirements: You
need a direct number in the code 495 - 499
Maximum mobility. (i.e. so that I can move to another office with this number without any problems)
Communication quality, without echo and other jokes
Using a regular handset
I looked at the numbers on the youmagic website, I liked the prices for calls within Moscow.
Is it possible to organize a decent connection using the number from the specified service and the ip of the phone? Who uses what means and how do you implement telephony in your online store?
Or there are more interesting offers on the market?

Answer 1

The easiest way is to use a ready-made cloud virtual PBX: here
IVR, voice recording and other things.

Answer 2

IP телефония от TelPhin - качество по Москве и России нормальное. Цены сами смотрите. Используются проводные и беспроводные IP телефоны, СофтФон от ТелФин.

Answer 3

hottelecom.net

Answer 4

comtube.ru

Answer 5

ringcloud.ru