Advantages of virtual IP telephony:

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2. External. For working with clients, suppliers and partners. These company mobile numbers allow you to make and receive calls from any external subscribers.

You can create a beautiful phone number for the entire company or a separate branch. As a result, employees will make calls from an IP phone, application or mobile device. Customers will have a single number for your company, which they can call you back.
You can connect city numbers, multi-channel numbers and even a federal telephone number in Russia at once.

The main feature of IP telephony is a successful combination of the usual format of regular calls between subscribers and additional functions that, for example, analog communication does not have.

IP telephony includes:

Automatic call routing functions - distribution of calls from clients;
voicemail;
conference calls;
call recording;
integration with other business systems such as CRM and ERP ;
own internal number;
number for the client for external calls.

Reduced connection costs - favorable rates for IP telephony. The cost is significantly lower when compared to conventional analog communication, especially in the case of international calls.
Scalability is the ability to quickly expand the network.
Extensive functionality — the ability to use various functions: integration with ghana phone number list CRM, online call recording. This improves the quality of customer service.
Disadvantages of IP telephony:

Internet dependence - the quality of phone calls may be impaired if the manager has an unstable Internet connection.
Need unlimited internet.
Security - If not configured correctly or not sufficiently protected, IP telephony for Internet communications can become vulnerable.
Fast connection of services and integration of telephony may still be more expensive than paying for videoconferencing or corporate messenger tariffs .
In general, it can be said that modern telephony, virtual communication is a useful and irreplaceable tool for corporate communication. To a greater extent, it is suitable for implementing various scenarios of incoming and outgoing calls. For example, for organizing the work of call centers and sales departments.