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") ![](/images/getstarted-writetous-navbar-int_ZY7MOf.webp) ### Write to us Fill out our request form. Our experts will respond as soon as possible. [Write to us](/en/request-information "Write to us") ### Cheap phone calls: 3 cost-efficient opportunities [1. Low cost calls with a flat rate tariff](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/cheap-phone-calls#section-3) [2. Telephone systems with free internal calls](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/cheap-phone-calls#section-4) [3. Cheap phone calls with Least Cost Routing](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/cheap-phone-calls#section-5) The higher the volume of telephone calls made, the more important it is to get the best price tariff. For example, in an [outbound](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/outbound) [call centre](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/call-centre) the cost of phone calls is one of the largest costs, after the wage bill. In addition to **selecting a low-cost provider** and an [appropriate tariff model](t3://page?uid=18), the phone system itself can contribute to significant cost reductions. In the following, the **3 most important opportunities to have cheap calls**, are outlined: ### 1. Low cost calls with a flat rate tariff [Flat rate tariff models](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/flat-rate) make it possible to have a high volume of phone usage at a very low relative cost. With flat rate tariffs all of the costs relating to the phone line and the calls made are paid at a fixed price, regardless of the amount of actual use. Flat rate tariffs may apply to every kind of telephone call or just for certain connections. Some tariffs include free calls * to the [fixed-line network](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/the-fixed-line-network), * to mobile phones, * to certain countries or * to participants in a particular [network](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/telecommunication-networks). ### 2. Telephone systems with free internal calls Thanks to various different functions, even telephone systems can enable users to make calls at a very low cost. In general, internal calls between those directly connected to the telephone system are free. Modern Internet-based telephone systems make the following **4 vital functionalities** possible: 1. Integrating participants into corporate communications regardless of their location. 2. Allowing participants to be reached via a uniform corporate [telephone number](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/national-international-phone-numbers). 3. Depending on the [cloud](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/cloud) telephone system being used, these participants can also make calls to each other as virtual, internal participants, for free. 4. Even mobile phones can be integrated into these kinds of systems, making the cost of calling them from a landline phone considerably cheaper. Generally, [internet telephony](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/internet-telephony) **is less expensive** than conventional [landline](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/dedicated-line) and [mobile](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/mobile-phone-network) telephony. With a cloud telephony solution, internal calls within a company are even completely free. [Cloudya, NFON's cloud telephone system](/en/products/cloudya), gives you **3 key cost advantages**: * Flexibility and scalable usage depending on your needs. * With our [flexible pricing models](/en/products/cloudya/pricing), you keep your costs under control with predictable monthly fees. * No hidden costs, no long-term contracts, you only pay for the services you use. ### 3. Cheap phone calls with Least Cost Routing If a telephone system supports [Least Cost Routing](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/least-cost-routing) or if a separate Least Cost Router is installed, this also reduces phone bills. The Least Cost Routing function automatically selects the most favourable [telephone provider](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/telephone-provider) for a call. In order to do this, it has the call rates for various contractors stored in its system and uses the Call-by-Call method. This means: * There is no need to compare fee tables manually. * If rate tables are regularly updated, the Least Cost Router is still able to find the most favourable supplier even after adjustments to tariffs have been made. A prerequisite for using the Least Cost Router is that the user's own telephone provider allows the Call-by-Call method. ### Low cost calls with a flat rate tariff ![](/en/media//Default/Blog/Cloud_Insider/Cheap_phone_calls_image_1.webp) ### Telephone systems with free internal calls ![](/en/media//Default/Blog/Cloud_Insider/Cheap_phone_calls_image_2.webp) ### Cheap phone calls with Least Cost Routing ![](/en/media//Default/Blog/Cloud_Insider/Cheap_phone_calls_image_3.webp) Making **cheap calls** seems more difficult than it actually is. With the right telephone provider and the selected aspects you should pay attention to, you can benefit from the advantages of a [cloud telephone system](t3://page?uid=16). Let NFON convince you about the new possibilities of business communication! **Would you like to learn more about the advantages of a cloud telephone system?** ### Related Articles ### Least Cost Routing [Least Cost Routing](/en/get-started/cloud-telephony/lexicon/knowledge-base-detail/least-cost-routing) ### Voice over Internet Protocol (VoIP) PSTN stands for Public Switched Telephone Network and is generally known as the traditional phone network. It has been connecting people since the late 19th century, at first over copper telephone lines and later using fibre optic cables, satellites, and undersea cables. All of these are interconnected by switching centres which establish a dedicated connection – or circuit – between callers. Voice signals can then travel over this circuit. When the caller speaks into his handset, the caller’s phone translates the sound waves into electrical signals. These are transmitted over the PSTN (converted to optical signals for part of the way, so they can travel via fibre optic cables), and the phone at the other end of the line then translates the received signals back into sound. The arrival of **Voice over IP (VoIP)** technology – essentially, transmitting voice calls over the Internet rather than the PSTN – challenged traditional telephony and fundamentally changed how people communicate. 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