Technological changes are a continuously evolving process which keeps every business on their toes, and one such revolution has been the introduction of “cloud” in the communication sector. Prior to the cloud telephony technology, every business had to maintain a separate IT personnel to handle the array of wires and hardware in order to ensure a smooth communication — in and outside the organization.
As technological changes started capping the industry, these wires, hardware, and software became obsolete. With the cloud, a business becomes independent from the installation, IT personnel or system maintenance cost. The cloud telephony service provider now handles all the setup, maintenance and upgradation of the telephony infrastructure on the cloud. As consumers of these services, business only needs an interface to connect with the telephony server to get started.
What Is Cloud Telephony?
Cloud telephony is the technology where communication devices area hosted over service provider’s premises and are made accessible to the customers through the cloud. Further, a web interface is provided to the customers to connect with this cloud-hosted system.
How Cloud Telephony Simplifies Scaling and Office Migration
In the past, when the businesses planned to scale or migrate their office space, then concerns like the cost of buying a new telephone line or time delay in the infrastructural setup would start to surface their mind — making the whole migration process a cumbersome task. But, with cloud telephony solutions, businesses simply need to inform their service providers of any such change, and the rest is then taken care of automatically.
What Are the Key Benefits of Cloud Telephony?
Cloud telephony offers many more seamless benefits to your business. Let’s look at few of them below:
| Cloud Telephony Benefit | What It Means for Your Business |
| Lower Cost of Ownership | Most companies save around 15-30% on operational expenses |
| Reliable with High Uptime | Backup servers take over instantly with no time lag |
| Easy Scalability | Add or remove users and channels as per the requirement |
| Always Updated | Software and hardware are upgraded at the backend automatically |
1. Lower Cost of Ownership
Most companies save around 15-30% on operational expenses. The need for resources is lowered as the whole set up is virtualized which directly affects the overall spending of the enterprise. The pay-per-use model makes it more affordable for the small and medium enterprise businesses to adapt.
2. Reliable with High Uptime
Multiple servers are kept in data centers to handle any unexpected technical failure. If one system fails, another set of the system automatically takes its place to starts the services with no time lag.
3. Easy Scalability
Shape of no business remains constant – every business is bound to grow or shrink. To keep up with the ever-changing need, cloud telephony services come very handily. Any no. of users/channels can be added or removed from the server as per the requirement.
4. Always Updated
Software industry keeps expanding and adding new features for better performance. To sync your communication system with these changes, service providers keep updating the software and hardware at the backend without affecting the user’s usage. Keeping your services updated without investing any extra effort or time is the major benefit of cloud telephony technology.
How Does Cloud Telephony Work?
Cloud telephony functioning is no different from the traditional way, the major distinguishing factor between the two is – former is located on the premise of the customer/business itself and latter is installed over service provider’s premises which is accessible through the cloud network.
The Role of Hosted PBX and PRI Lines in Call Routing
When a customer dials the call — it is first redirected to Hosted Public Branch Exchange (PBX) on the cloud. This transfer of data is made through a Primary Rate Interface (PRI) line which is connected to the telephony server with a PRI card (PRI line is a telecommunication standard used on an ISDN to carry voice, video, data, and other network services between the user and the network).
This hosted PBX (which is provided by the service provider) stores the necessary phone numbers and information to decide routing structure for every call. All your office phone extension is connected to the hosted PBX, so every phone call landing on PBX decides it’s best suitable agent after browsing through these the set priorities in the system.
PBX can even block certain calls — if the service provider or customer explicitly sets it in the rules. Once the server decides the best-suited agent for the request, it immediately connects the customer and the agent over the phone line.
Call transfer between the agents is comparatively a faster process as all the agents are connected to the same umbrella of hosted PBX.
Cloud Telephony vs Traditional Telephony: What Are the Main Differences?
Short answer: Traditional telephony (EPABX/landline) runs on physical hardware installed at your office and bills as a large upfront capital expense. Cloud telephony is software-driven, delivered over the internet from the provider’s servers, and bills as a predictable monthly operating expense per user. The practical difference shows up in setup time, scalability and mobility — not in call quality.
| Feature | Traditional Telephony (EPABX / Landline) | Cloud Telephony (Hosted PBX) |
| Infrastructure | Heavy on-premise hardware — EPABX box, PRI lines, servers, copper wiring | Software-driven, hosted on the provider’s premises and accessed over the internet |
| Cost model | High upfront capital expenditure for hardware, licensing and installation | Subscription or pay-per-use operating expenditure with predictable monthly billing |
| Maintenance | Handled in-house by dedicated IT personnel or annual maintenance contracts | Setup, maintenance and upgradation are handled by the cloud telephony service provider |
| Scalability | Slow — new lines mean new hardware, extra wiring and on-site setup | Instant — any number of users or channels can be added or removed from the server |
| Mobility | Fixed to the desk phone at the office | Agents and admins can access and monitor calls from desktop, web and mobile apps |
| Advanced features | Basic voicemail and call transfer; anything more needs paid integration modules | IVR, call routing, call recording, call analytics and CRM integrations included |
| Uptime | A single hardware failure can take the system down | Multiple servers in data centres take over automatically with no time lag |
Which Businesses Should Choose Cloud Telephony?
Cloud telephony is the stronger fit when speed, flexibility and cost control matter more than owning the hardware:
- Startups and SMEs that want a professional business identity with virtual numbers and IVR without spending on upfront hardware
- E-commerce and D2C brands handling high inbound call volumes that need call routing, recording for quality checks and CRM integration
- Hybrid and remote teams whose agents work from home or across multiple cities and still need official calls on company numbers
- Fast-growing and seasonal businesses that need to scale call handling capacity up or down without waiting on physical line installation
- Multi-location businesses planning to migrate or expand office space, since only the service provider needs to be informed of the change
Which Businesses Should Stick With Traditional Telephony?
On-premise systems still make sense in a narrow set of cases:
- Organisations with strict data-localisation or air-gapped security mandates — some core banking units, government departments and defence-linked entities are required to keep call records entirely on internal servers
- Offices with unreliable internet connectivity — cloud telephony depends on stable broadband, so remote sites with frequent outages and no redundant connection may be better served by fixed PSTN lines
- Large enterprises with recently deployed, fully paid-off PBX hardware and in-house IT staff already maintaining it, where an immediate full migration would not deliver near-term ROI
Even in these cases, a hybrid model is common: keep the legacy PBX for core operations and layer cloud telephony on top for sales, support and remote teams.
Why Should Business Go for Cloud Telephony?
Businesses can utilize multiple features to fasten their everyday processes and profit-making, but there are few key features of the cloud telephony services which makes it the best communication mode for the business:
1. Voicemail
Voicemail is a method of storing voice messages electronically. This feature is particularly beneficial in the cases where all the agents are busy on other line or are unavailable due to other reasons. The message is stored as a voice recording on the local storage — which is later retrieved by the agents and responded.
2. Call Forwarding
This feature allows the business owner or agents to remain available for the calls— in case they are not physically present in the office. You can utilize the cloud services to forward the incoming calls to your number. Store a list of forwarding numbers in the system to automatically forward your calls to those numbers according to the set priority. The caller remains untouched by the whole forwarding process.
3. Automatic Attendant
The Interactive Voice Response system is a smart feature which helps the business to automatically attend/answer the call with a recorded greeting message. The automatic attendant replaces the manual task of attending and transferring the calls. This feature saves a lot of human costs which used to be spent on hiring a dedicated resource to attend the incoming calls.
4. Call Recording and Monitoring
Once the business is set up, the next step lies in the maintenance which can only be achieved by constantly monitoring your processes. The call recording feature is one such facility which allows business to record every incoming and outgoing call depending upon the business requirement. This feature helps both the customers and the business in maintaining the authenticity of the conversation and the business processes.
5. Ease of Use with Desktop, Web and Mobile Applications
To utilize all the above features, an interface is provided by the cloud service provider. To expand the usage and flexibility of use, this interface is easily accessible through the desktop and web platforms. Many service providers have now developed apps for easy accessibility of services for the agents. With the mobile apps, agents/admins can at any time access and monitor their calls on their fingertips—something a professional mobile app agency ensures by designing user-friendly, high-performance applications.
6. Integration With Other Systems
There are many clouds telephony software’s which adds value to cloud telephony processes by providing the integration flexibility. You can integrate your CRM, industry-specific management system or other software’s into your cloud telephony systems to maximize your usage.
Final Words: Why Cloud Telephony Is the New Revolution
According to Indian VoIP Market Forecast & Opportunities, 2017, “The market will witness phenomenal growth (CAGR) of 27% for next five years regarding the number of VoIP subscribers.”
So, as the number suggests, there is no denying to the fact cloud is the new revolution in the market. And customers are welcoming this revolution with open mind and arms. So, it’s high time to adopt cloud telephony into your business to amplify your customer experience and profits.
For a broader technical background on how these systems are classified, see cloud communications on Wikipedia.
Frequently Asked Questions About Cloud Telephony
Cloud telephony is the technology where communication devices area hosted over service provider’s premises and are made accessible to the customers through the cloud. A web interface is provided to the customers to connect with this cloud-hosted system.
When a customer dials a call, it is first redirected to the Hosted Public Branch Exchange (PBX) on the cloud through a Primary Rate Interface (PRI) line. The hosted PBX stores the necessary phone numbers and information to decide routing structure for every call, then connects the customer and the agent over the phone line.
Most companies save around 15-30% on operational expenses. The pay-per-use model makes it more affordable for the small and medium enterprise businesses to adapt.
The key features are voicemail, call forwarding, automatic attendant (IVR), call recording and monitoring, desktop/web/mobile applications, and integration with CRM and other business systems.
Traditional telephony depends on physical EPABX hardware, PRI lines and wiring installed at your own premises, with a high upfront cost and in-house maintenance. Cloud telephony is hosted on the service provider’s premises and accessed over the internet, billed as a monthly operating expense, with setup, maintenance and upgradation handled by the provider.
Multiple servers are kept in data centers to handle any unexpected technical failure. If one system fails, another set of the system automatically takes its place to starts the services with no time lag.
Yes. Any no. of users/channels can be added or removed from the server as per the requirement, and businesses simply need to inform their service providers of any such change.
