Service calls to customer numbers through an extension number

Question

Telephony

Hello.

Prompt who knows how to implement the following service.

The site has a list of organizations with phone numbers. But instead of their phones is ours with an extension number. The user calls him, dials an extension and he is connected to the organization of interest.

Here is an example:
moresalonov.ru/salon/9672

Answer 1

Mango telecom ( www.mango.ru ). Haven't come across anything better. Not for free!

Answer 2

I have never met anything more convenient.
And as for me, there are much more pleasant operators.
And with more pleasant prices, and with a large set of free useful features ...

Answer 3

And why not just raise the asterisk and make a redirect from the extension to the outside? Cheap and angry.

Answer 4

put an asterisk. or take code.google.com/p/virtual-pbx/ and create virtual PBXs in it for each office...

Answer 5

Cloud PBX Zadarma . Turn on the PBX, create up to 50 internal numbers and forward them anywhere. You can also put an answering machine that will say "Enter the internal number of the company."
The solution itself is free, you will need to pay for a direct number, and, of course, for forwarding.