It is quite typical for the market to have a situation where everything runs properly during the test connection, but then the quality drops and so does the reliability. This vendor has proven to be professional - in two years of cooperation only 2 times the problems occured, but they were promptly solved by the operator.
Qualified technical support is very important. For example, we have had suppliers, whose numbers were blocked. The call starts, but in fact when dialing the number you hear "subscriber unavailable" and the call does not reach the end user. This is no longer a problem.
The quality is high. The managerial and support teams of the company are eager to get in touch, and any questions are quickly resolved.
I would also like to note that, like any outsourcing project, prices for communication play a key role. At this point, A1 Telecom is on top of its game, both in terms of call rates and additional lines and numbers. Everything is connected and scaled in a flash and inexpensively.
All in all, we can recommend A1Telecom to everyone.