--- title: "What does an IP phone system cost? The 5 parts of the price" description: "Too many channels and missing maintenance inflate any IP phone system. Learn to break down the cost and compare over 5 years. No-obligation proposal." language: en url: https://www.dataroad-it.com/en/ip-phone-system-cost-comparison/ source: https://www.dataroad-it.com/en/ip-phone-system-cost-comparison/ publisher: DataRoad IT (DataRoad - IT Services and Consulting), Portugal --- > Too many channels and missing maintenance inflate any IP phone system. Learn to break down the cost and compare over 5 years. No-obligation proposal. # What does an IP phone system cost? The 5 parts of the price At a glance For decision-makers short on time. - 01 A phone system has no price per extension: the cost has five components. - 02 On-premises and cloud only compare over 3–5 years, with a growth scenario. - 03 In the cloud, the bill rises with every hire without anyone deciding anything. - 04 The most common waste is too many simultaneous channels. ### In this article The most expensive phone system is the one that looks cheap in the proposal: too many simultaneous channels, maintenance nobody included and a network that does not prioritise voice are paid for every month. Asking "how much does an IP phone system cost?" has about as useful an answer as asking how much a car costs. But the cost structure is always the same, and anyone who knows it reads every proposal differently. ## The four points to remember - **There is no price per extension** The cost splits into five items, PBX, handsets, installation, call traffic, maintenance, and almost no proposal separates all five. - **One year is a misleading horizon** As a rule, the cost curves of an on-premises and a cloud system only cross in year 3 to 5. - **Per-user charging** Every hire increases the bill without a new decision. - **Simultaneous channels** Oversizing is the most frequent hidden cost. ## What makes up the price? Whatever the technology, the total cost always falls into the same five items: | Item | What it includes | | --- | --- | | PBX | Licence or subscription, usually per extension or per simultaneous call | | Handsets | IP phones, headsets and apps for computer and mobile | | Installation | Number porting, schedules, recorded messages, numbering and configuration | | Call traffic | Calls and SIP trunk paid to the operator | | Maintenance | Support, changes and updates over the system's lifetime | Many proposals show two or three of these lines, and comparing them with another takes extra work. **Insist on all five items separately.** A monthly figure that lumps everything together could be excellent or terrible, only a breakdown tells you. And a supplier who refuses to separate them has already given you an answer. ## Where does the cost sit in an on-premises system? At the start. Almost all the investment happens up front. - **Licences** They grow with the extensions, but what surprises people are the extra modules: reports, CRM integration, call recording, queues. Almost always charged separately. - **Phones** The most underestimated item. A handset with a display and supervision keys costs little more than a basic one, until you do the maths for thirty people. - **Installation** Depends on the numbering plan. Simple call handling installs quickly; queues per department, different schedules and forwarding to mobiles require serious configuration. - **Annual maintenance** The item most often missing from proposals, and precisely the one that provides security patches. ## And with a cloud phone system? The logic is reversed: a light start, a permanent cost. The monthly fee per user dominates. It is what makes the cloud affordable in year one and expensive in year five, especially with a growing team. Check what that monthly fee covers: - Number of simultaneous calls per person. - Whether calls to national numbers are included. - The extra cost of call recording. - How many devices per person at the same time. Number porting usually has a one-off cost, and it is in the minimum term that seemingly identical proposals differ. ## How do I compare two proposals without fooling myself? Over three and five years, with a written growth scenario. For each solution, add up the cumulative cost in year 1, year 3 and year 5, using the expected headcount at each point. The result often defies intuition: what seemed expensive wins, and vice versa. - **Stable company**: one office, 20 to 40 workstations: on-premises tends to work out cheaper from year four. - **Growing company**: several sites or high mobility: the cloud is almost never a mistake, because the extra cost buys flexibility. ## Which costs do not appear in the proposal? - **Too many channels** Waste number one. Without intensive call handling, thirty people rarely need more than 8 to 10 channels. Sizing by headcount rather than real traffic is paid for every month. - **A network with no voice priority** The new system will have poor calls, and the real cost includes work on the [network infrastructure and structured cabling](https://www.dataroad-it.com/en/structured-cabling-installation/). - **Backup power** Every IP phone depends on a switch, and every switch on mains power. Without a UPS, a power cut leaves the company unable to answer anyone. - **Toll fraud** A phone system exposed to the internet and poorly protected can run up thousands of euros in international calls over a weekend. It is prevented with [managed firewalls and correct security rules](https://www.dataroad-it.com/en/managed-firewall-services-portugal/) and destination limits. ## Want a proposal you can actually compare? We install and manage [IP PBX phone systems](https://www.dataroad-it.com/en/managed-ip-pbx-portugal/), on-premises or in the cloud, and present every proposal broken down item by item. No commitment. **More than 10 workstations · support contract · remote, on-site and telephone support.** +351 211 459 950 * · sales@dataroad.pt **Call to a Portuguese landline.* Chosen by respected and international companies ★★★★★ 5,0 · 52 Google reviews ★★★★★ 5,0 · 52 Google reviews DataRoad ## Related articles [IT UnlimitedHow to measure the quality of your IT provider’s supportAlmost every IT provider says it responds quickly. Few show how they measure it. These are the five signals a decision-maker can ask for and…3 November 2026 · 2 min read](https://www.dataroad-it.com/en/how-to-measure-it-support-quality-provider/)[IT UnlimitedFunding network and IT infrastructure in 2026/2027: a CFO guideThere is no grant open for equipment alone. 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