{"id":16865,"date":"2022-11-01T10:22:43","date_gmt":"2022-11-01T09:22:43","guid":{"rendered":"https:\/\/www.savecall.de\/cloud-telephony-how-it-works\/"},"modified":"2026-08-07T10:38:50","modified_gmt":"2026-08-07T08:38:50","slug":"cloud-telephony-how-it-works","status":"publish","type":"post","link":"https:\/\/www.savecall.de\/en\/cloud-telephony-how-it-works\/","title":{"rendered":"Cloud telephony – how it works!"},"content":{"rendered":"\n

\n

\n

Cloud telephony: how it works!<\/h1>\n<\/div>\n\n\n\n

Trusted Advisor f\u00fcr Sourcing von IT & Telekommunikation<\/h3>\n<\/div>\n\n\n\n
\n
\n
Why cloud telephony is the future<\/h2>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\n
\n
Efficient communication for modern companies<\/h2>\n\n\n\n
How well is your current telephony solution prepared for the requirements of modern, distributed teams?<\/h6>\n\n\n\n
Digital collaboration is the backbone of successful companies. Cloud telephony<\/a> enables location-independent communication, saves costs and increases productivity. Switching to IP-based systems makes telephony<\/a> more flexible, scalable and future-proof.<\/p>\n\n\n\n
<\/div>\n\n\n\n
In a nutshell:<\/strong><\/p>\n\n\n\n
\n
Cost efficiency:<\/strong> No expensive hardware or maintenance, billing per user with full cost control.<\/li>\n\n\n\n
High flexibility:<\/strong> Access telephony from anywhere with an internet connection.<\/li>\n\n\n\n
Simple administration:<\/strong> Administration and maintenance are handled by experts, saving you time and resources.<\/li>\n\n\n\n
Extended functions:<\/strong> Integration of chat, video, calendar and unified communications.<\/li>\n\n\n\n
Rapid scaling:<\/strong> New employees or locations can be connected in minutes.<\/li>\n<\/ul>\n\n\n\n<\/div>\n\n\n\n
The solution:<\/strong> A cloud phone system moves your telephony to a specialised provider, making companies independent of location, hardware and extensive maintenance.<\/p>\n\n\n\n
What this article covers:<\/strong> How cloud telephony works, what benefits it offers, and what to consider when moving from ISDN to a cloud phone system.<\/p>\n\n\n\n
\n
Book a consultation<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
Table of Contents<\/h3>\n\n\n\n
\n
Why switch to cloud telephony?<\/a><\/li>\n\n\n\n
Making calls in the cloud: what is it?<\/a><\/li>\n\n\n\n
Why move your company telephony to the cloud?<\/a><\/li>\n\n\n\n
Switching to cloud telephony: how it works<\/a><\/li>\n\n\n\n
Product recommendation: Avaya Cloud Office<\/a><\/li>\n\n\n\n
How SAVECALL supports you<\/a><\/li>\n\n\n\n
Conclusion<\/a><\/li>\n\n\n\n
Frequently asked questions about cloud telephony<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n

\n
\n
\n
\n
\n
\n
\n
\n
\n<\/p>\n\n\n
\n
\n
Why switch to cloud telephony?<\/h3>\n\n\n\n
The quality of collaboration is a decisive factor for the success of any company. Employees, customers, partners: everyone must be able to communicate easily and quickly, regardless of their location. Cloud telephony is the solution for this. Flexibility, efficiency, cost optimisation: this technology has it all. Find out below about the many advantages and how you too can switch to a cloud phone system.<\/p>\n\n\n\n
Making calls in the cloud: what is it?<\/h3>\n\n\n\n
A phone system that is hosted by the provider in a data centre rather than on your company’s premises. Your calls are then routed via the internet instead of a conventional telephone line, which no longer really exists in Germany anyway: Deutsche Telekom has already fully converted its analogue and ISDN network to IP. The technology used in the backbone is therefore nothing new. A conventional telephone uses analogue signals to transmit information, which is then converted into digital IP packets in the backbone. With IP telephony, voice is converted directly into small digital packets, which are then forwarded like web data. The whole process is coordinated by the phone system, which now sits in the cloud rather than on your premises.<\/p>\n\n\n\n
Why move your company telephony to the cloud?<\/h3>\n\n\n\n
Cost control:<\/strong> The company achieves significant savings. Cloud telephony solutions are typically billed at a flat rate per employee (per seat) including flat-rate calling, and no longer incur hardware, maintenance or step-fixed expansion costs.<\/p>\n\n\n\n
Greater mobility:<\/strong> Employees can access the service from anywhere as long as they have internet access. Cloud solutions are ideal for companies with multiple locations and for employees who travel frequently and\/or work from home.<\/p>\n\n\n\n
Simplified administration:<\/strong> When you outsource your phone system, you put administration in professional hands, giving you more time and resources for other tasks.<\/p>\n\n\n\n
Extended functions:<\/strong> Many cloud telephony software solutions enable the use of additional services, for example unified communications. This lets employees access shared calendars, video conferencing solutions or even instant messaging directly within their telephony app.<\/p>\n\n\n\n
Switching to cloud telephony: how it works<\/h3>\n\n\n\n
Once you are convinced of the many benefits of IP telephony, all that’s left is to take the step and start your digital transformation. To make the migration a success, consider the following points:<\/p>\n\n\n\n
Internet connection:<\/strong> It’s important that your internet connection is powerful enough to support an IP telephony solution. Best to clarify this directly with SAVECALL or your network operator.<\/p>\n\n\n\n
Number of extensions:<\/strong> Subscriptions usually offer a plan based on the number of users. Calculate your telephony requirements and check whether a flat rate is worthwhile.<\/p>\n\n\n\n
Options:<\/strong> Landline telephony, mobile telephony, video conferencing, instant messaging: think about which functions matter to you when choosing the right package.<\/p>\n\n\n\n
Devices:<\/strong> You can use IP phones or run the application directly on your devices, such as a PC, smartphone or tablet. Check whether and how many users need desk phones, whether you need a DECT solution, and whether dead man’s switches in production or building systems are controlled via the phone. These points often raise challenges worth considering.<\/p>\n\n\n\n
Product recommendation: Avaya Cloud Office<\/h3>\n\n\n\nAvaya Cloud Office by RingCentral is a comprehensive cloud phone system and collaboration tool that unifies communication across all in-person and remote teams and locations. Calls, chats, meetings and collaboration, no matter where your employees are. File sharing, task management and virtual team rooms help you stay focused on tasks and keep to schedules. With the ability to integrate more than 100 business applications such as Google Drive and Salesforce, you can tailor a unified, cloud-based company communication set-up. As an experienced partner for both classic and cloud-based phone systems, SAVECALL can meet almost any special requirement together with Avaya. Avaya understands where German companies are coming from with their phone system requirements and does not demand revolutionary changes. On the contrary: we typically run hybrid environments for our customers, which we migrate in a cost-optimised, flexible way depending on requirements, contract terms and hardware lifecycles. Find out more about Avaya Cloud Office<\/a> and current terms on our product page.<\/p>\n<\/div>\n<\/div>\n\n\n

\n
\n<\/p>\n

\n
\n<\/p>\n\n\n
\n
\n
\n
How SAVECALL supports you<\/h3>\n\n\n\n
<\/div>\n\n\n\n
SAVECALL supports you in migrating your telephony to the cloud, from checking your internet connection to selecting the right cloud phone system such as Avaya Cloud Office<\/a> through to implementation. We advise independently and find the solution that fits your number of extensions, sites and devices.<\/p>\n\n\n\n
<\/div>\n\n\n\n
Conclusion<\/strong><\/h3>\n\n\n\n<\/div>\n\n\n\n
Bring about change in your company today and enable your employees to communicate more easily and quickly, while reducing your costs at the same time. SAVECALL is at your side and supports you in migrating your telephony to the cloud.<\/p>\n\n\n\n
<\/div>\n\n\n\n
\n
Book a consultation<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n
<\/p>\n\n\n
\n
\n
\n
\n
$\"Frank$ <\/figure>\n<\/div>\n\n\n\n
\n
Written by<\/p>\n\n\n\n
Frank Frommknecht<\/h3>\n\n\n\n
Key Account Consultant, SAVECALL<\/strong><\/p>\n\n\n\n
Has supported companies for over 20 years in selecting and optimizing their connectivity solutions. His focus: making complex telecommunications understandable from the customer\u2019s perspective and finding the right solution strategically.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
Why<\/h2>\n\n\n\n
$\"\"$ <\/figure>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\n
\n
Telecom & IT sourcing. Worldwide. Carrier-independent.<\/h3>\n\n\n\n
<\/div>\n\n\n\n
Selection & operation of worldwide connectivity & cloud infrastructure. Without vendor risk & unnecessary costs.<\/p>\n\n\n\n
<\/div>\n\n\n\n
\n
80+ carriers worldwide<\/li>\n\n\n\n
One point of contact<\/li>\n\n\n\n
One SLA<\/li>\n\n\n\n
One portal: mySAVECALL<\/li>\n\n\n\n
Min. 20% savings<\/li>\n<\/ul>\n<\/div>\n\n\n\n
\n
Book a consultation<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\n
\n
\n
25+
years of experience<\/h2>\n<\/div>\n\n\n\n
\n
Learn more<\/a><\/h5>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\n
40+
Employees<\/h2>\n<\/div>\n\n\n\n
\n
Learn more<\/a><\/h5>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
80+
Partner<\/h2>\n<\/div>\n\n\n\n
\n
Learn more<\/a><\/h5>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n
\n
\n
\n
1400+ Clients<\/h2>\n<\/div>\n\n\n\n
\n
Learn more<\/a><\/h5>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n
<\/p>\n\n\n
\n
\n
Sources<\/h3>\n\n\n\n
\n
SAVECALL: Cloud Phone Systems for Businesses: Providers, Features & Pricing<\/a><\/li>\n\n\n\n
SAVECALL: Avaya Cloud Office: so geht Business Telefonie<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n
<\/p>\n\n\n
\n
\n
Frequently Asked Questions<\/h2>\n<\/div>\n<\/div>\n\n\n
<\/p>\n\n\n
Frequently asked questions about cloud telephony<\/h3>\n\n\n\n
What is cloud telephony?<\/strong>
Cloud telephony refers to a phone system that is no longer hosted locally at the company but by the provider in a data centre. Calls are routed via the internet instead of a classic telephone line. Voice is converted directly into digital data packets and transmitted like web data, coordinated by the phone system, which now sits in the cloud rather than on the company’s premises.<\/p> <\/div>
What advantages does cloud telephony offer over a classic phone system?<\/strong>
Cloud telephony saves costs since no in-house hardware or maintenance is needed, and billing is usually a flat rate per user including flat-rate telephony. Employees can access telephony from anywhere with an internet connection, which is especially useful for multiple locations or home offices. It also adds extended functions such as shared calendars, video conferencing and instant messaging directly within the telephony app.<\/p> <\/div>
What should I consider before switching to cloud telephony?<\/strong>
Before switching, check whether your internet connection is powerful enough for IP telephony, ideally in consultation with SAVECALL or your network operator. Also important are the number of extensions you need, the functions you want such as mobile telephony or video conferencing, and the right devices, for example whether you need desk phones, a DECT solution, or a connection for safety switches in production.<\/p> <\/div>
Is ISDN still available in Germany?<\/strong>
No, classic ISDN is effectively no longer available in Germany. Deutsche Telekom has already fully converted its analogue and ISDN network to IP technology, and other providers have made the same switch. Companies still running an ISDN-based phone system therefore need either an IP-based connection or a switch to a modern, IP-based or cloud-based phone system.<\/p> <\/div>
How many extensions does my company need?<\/strong>
The number of extensions you need depends on how many employees need to make calls and their telephony requirements. Most cloud telephony subscriptions offer plans based on the number of users, or seats. It’s worth calculating your actual requirements in advance and checking whether a flat rate makes sense for teams that make a lot of calls.<\/p> <\/div>
Which cloud phone system does SAVECALL recommend?<\/strong>
For many companies, SAVECALL recommends Avaya Cloud Office by RingCentral, a comprehensive cloud phone system that combines telephony, chat, meetings and collaboration and integrates with more than 100 business applications such as Salesforce and Google Drive. Since the right solution depends on individual requirements, SAVECALL advises independently on which cloud phone system best fits a given company.<\/p> <\/div> <\/div>\n\n\n
<\/p>\n\n\n
\n
\n
Articles you may also like<\/h2>\n<\/div>\n\n\n\n
\r\n
\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Security<\/p>\r\n <\/div>\r\n\r\n
\r\n
managed-security-service-provider-germany<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"Satellite$ <\/div>\r\n
WAN<\/p>\r\n <\/div>\r\n\r\n
\r\n
wan-costs-site-connectivity<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"Satellite$ <\/div>\r\n
WAN<\/p>\r\n <\/div>\r\n\r\n
\r\n
wan-monitoring-visibility-operation<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"Satellite$ <\/div>\r\n
WAN<\/p>\r\n <\/div>\r\n\r\n
\r\n
wan-sla-mttr-what-counts<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"Satellite$ <\/div>\r\n
Voice<\/p>\r\n <\/div>\r\n\r\n
\r\n
cloud-phone-system-provider-comparison<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Mobile radio management<\/p>\r\n <\/div>\r\n\r\n
\r\n
Business Mobile Provider Comparison 2026<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Internet<\/p>\r\n <\/div>\r\n\r\n
\r\n
Business Internet Connection Which Provider Fits<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Consulting<\/p>\r\n <\/div>\r\n\r\n
\r\n
why-vendor-sprawl-destroys-agility<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"Das$ <\/div>\r\n
WAN<\/p>\r\n <\/div>\r\n\r\n
\r\n
AI-Enabled Networks: Why Bandwidth Alone Isn’t Enough\u2014and What CIOs Really Need to Focus On<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
WAN<\/p>\r\n <\/div>\r\n\r\n
\r\n
Global Connectivity from a Single Source<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Security<\/p>\r\n <\/div>\r\n\r\n
\r\n
nis2-telecom-infrastructure<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"WAN$ <\/div>\r\n
WAN<\/p>\r\n <\/div>\r\n\r\n
\r\n
managed-sd-wan-provider-germany<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Internet<\/p>\r\n <\/div>\r\n\r\n
\r\n
sase-provider-comparison<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Voice<\/p>\r\n <\/div>\r\n\r\n
\r\n
Why cloud security is important<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"Savecall$ <\/div>\r\n
Partner<\/p>\r\n <\/div>\r\n\r\n
\r\n
Second acquisition in twelve months: Savecall takes over landline customers from Bluestring<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Internet<\/p>\r\n <\/div>\r\n\r\n
\r\n
What and where are the challenges for the network infrastructure of most companies?<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Internet<\/p>\r\n <\/div>\r\n\r\n
\r\n
SAVECALL Holding GmbH founded: Clear structure. Strong foundation. Long-term partnership.<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"SAVECALL$ <\/div>\r\n
Security<\/p>\r\n <\/div>\r\n\r\n
\r\n
Mastering Shadow AI with SASE: Security and transparency for Gen-AI in the company<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"Luftaufnahme$ <\/div>\r\n
Partner<\/p>\r\n <\/div>\r\n\r\n
\r\n
10 advantages of mobile device management<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n
\r\n \r\n\r\n
\r\n
\r\n $\"Modern$ <\/div>\r\n
Internet<\/p>\r\n <\/div>\r\n\r\n
\r\n
Insights into the requirements of a modern workplace<\/h3>\r\n
\r\n
Learn moreLearn more<\/h3>\r\n <\/div>\r\n <\/div>\r\n\r\n <\/a>\r\n <\/div>\r\n <\/div>\r\n\r\n
<\/div>\r\n
<\/div>\r\n
<\/div>\r\n<\/div>\r\n\r\n