A dedicated server for telecommunications is a single-tenant bare-metal server used exclusively by a telecommunications provider to manage voice, video, and data traffic. This server offers low latency and high bandwidth requirements necessary for proper running of voice over IP platform, session initiation protocol trunking, hosted private branch exchange, and 5G edge networks.

Key Takeaways:

• A dedicated server for telecommunication allows you to get exclusive use of the CPU, RAM, and network resources, preventing congestion that adversely affects voice and video quality.
• Voice communication requires a latency of below 150 ms, while video calls need a latency of below 50 ms, both being met by dedicated servers.
• The top 4 applications used in the telecommunication industry include VoIP/SIP hosting, hosted PBX services, video conferencing tools, and 5G edge computing.
• Some of the important laws for telecom regulation in the US include CALEA, GDPR, HIPAA, FCC, and STIR/SHAKEN, making it easy for telecom providers to meet their regulations on dedicated servers.
• Telecommunications solutions such as Asterisk, FreeSWITCH, Kamailio, and OpenSIPS tend to perform better on bare metal servers than virtualized cloud infrastructure.
• The global telecommunication cloud market is expected to achieve a $22.26 billion market size by 2025 at a CAGR of 20.3%.

What Is a Dedicated Server for Telecommunication?

A dedicated server for telecommunication is a physical, bare-metal server allocated entirely to a single telecom operator, VoIP provider, or communications platform handling real-time voice calls, video conferencing, SIP sessions, and data routing without sharing hardware with any other organization.

Unlike shared hosting or cloud VMs, it gives the telecom provider complete hardware control. Every CPU cycle processes a call signaling. Every GB of RAM holds active session data. Every Gbps of bandwidth carries live communication traffic unshared, uncontested.

The term “bare-metal server” is used interchangeably with dedicated server in telecom infrastructure planning. Both describe direct, exclusive access to physical hardware without a hypervisor layer or co-tenancy, as explained in this dedicated server guide.

Reasons why Telecom Companies Use Dedicated Servers

1. High Bandwidth for Handling Heavy Traffic

VoIP, video conferencing, IPTV, and data transmission services need large-scale, uninterrupted bandwidth for their traffic.

The transmission of one HD video conference call needs 3-6 Mbps of bandwidth. For instance, a VoIP service provider with 5,000 concurrent calls requires 30-50 Mbps bandwidth. A 1Gbps or 10Gbps port in a dedicated server provides the entire bandwidth capacity to a company’s traffic only, making it ideal for businesses looking for a dedicated server with unlimited bandwidth.

2. Low Latency for Voice and Video Transmission

According to ITU-T G.114 standards, latency should not exceed 150 milliseconds for voice transmission to be tolerable. A one-way delay exceeding 400 milliseconds makes voice transmission useless. Two ways exist to reduce latency using dedicated servers: bare metal processing without the use of hypervisors, and colocation within neutral facilities.

3. Security and Compliance to Regulations

Telecom providers manage 3 types of data that need special handling and encryption: personal communication content, call details (CDR data), and subscriber identification information.

Dedicated servers provide isolation of all 3 of these types of data at the hardware level. This means that there is no co-tenancy with any other organization on one machine, and the typical attack vector for shared hosting services does not exist. Dedicated servers also allow for more direct compliance with CALEA regulations for lawful interception, while multi-tenant cloud-based architectures make this difficult.

4. Customization and Dedicated Server Management

Specific needs for telecommunication software solutions, including Asterisk, FreeSWITCH, Kamailio, and OpenSIPS, require particular capabilities in relation to operating system, kernel, and drivers; these services are performed by a dedicated server hosting solution. Having root access allows one to patch the kernel right away, configure Quality of Service in relation to the NIC, and schedule CPU in accordance with the demands of audio data processing.

5. Reliable High Availability

High availability can be ensured by using dedicated server hosting with its powerful hardware configuration consisting of two power supplies, RAID drives, ECC memory, two network cards, as well as around-the-clock monitoring from the network operations center. A telecom dedicated server infrastructure with correct installation will achieve an uptime of 99.99%, or only 52 minutes of downtime per year.

Dedicated Server vs. Cloud vs. VPS for Telecom

The cloud platform works well for applications that do not require low latency, like billing portals, analytical tools, and CRM. Applications that need real-time voice and video connections will work better on bare metal servers. Hybrid architecture is the most common approach adopted by mature telecom organizations.

Telecom-Specific Hardware Specifications

3 hardware considerations specific to telecom workloads:

Clock speed over number of cores for CPU: Codecs such as G.711 to G.729 or OPUS conversion require significant CPU power for each call. It’s better to go with CPUs operating at speeds above 3.5GHz per core instead of maximizing core counts.

ECC RAM for session state: A SIP proxy handling 100,000 registered endpoints requires 100–200MB of RAM for the registration table alone. ECC memory prevents single-bit errors from corrupting active call sessions.

NVMe for CDR logging: High-volume platforms generate thousands of CDR writes per second. NVMe storage at 500,000+ IOPS handles this without the I/O queue buildup that SATA SSDs introduce at scale.

Applications of Dedicated Servers for Telecommunication

VoIP and SIP Hosting

The main application of dedicated servers in telecommunication lies in VoIP. The software-based platforms (FreeSWITCH and Asterisk) require a bare-metal environment where the performance of the kernel scheduler and network stack tuning would provide better voice quality.

A server with a bare-metal OS and FreeSWITCH can manage 10,000+ simultaneous G.711 connections with latency within 5 ms. Additionally, SIP trunking vendors implement the SBCs (Session Border Controllers) that ensure encryption and NAT traversal functionality and codec transcoding between carriers’ infrastructure and corporate PBXs.

Infrastructure for Video Conferencing

3-15 Mbps of traffic is required per person for high-definition and 4K video conferences. Having 500 participants online on the virtual conference call requires handling 750 Mbps to 7.5 Gbps of media data at once. For the solution that uses WebRTC technology, the server is supposed to be dedicated hardware (e.g., Janus or Mediasoup) to minimize any possible overhead from virtualization.

Hosted PBX & Unified Communications Solutions

Hosted PBX provides businesses with extensions, voicemail, IVR, and call routing on the platform maintained by the company itself. It makes use of dedicated servers for tenant separation, high availability call routing, and PSTN connectivity using SIP trunking.

Solutions such as 3CX, Elastix, and VitalPBX get deployed on dedicated servers and offer multiple business phone extensions from one server without failing to guarantee uptime SLAs demanded by enterprise-grade clients.

SS7 & Signaling Infrastructure

SS7 (Signaling System 7) is the international signaling protocol used to set up calls on the PSTN, send SMS messages, and authenticate mobile users across roaming networks. Telecom companies and MVNOs connected to the traditional PSTN infrastructure make use of dedicated servers for deploying SS7 signaling software and STP (signal transfer point) applications, which demand sub-millisecond latency guaranteed by bare-metal servers.

5G Edge Computing and Network Functions

5G architectures distribute processing to edge locations collocated with cell towers or in metro data centers hosting virtualized network functions (VNFs) and cloud-native network functions (CNFs). Dedicated servers at these edge nodes run User Plane Function (UPF) software and network slicing management functions. The sub-1ms latency target of 5G URLLC services requires bare-metal processing at the edge that virtualization cannot match.

Telecom Compliance: Regulations Your Server Must Support

STIR/SHAKEN requires specific attention. The FCC mandated STIR/SHAKEN for all US voice providers in 2022. This call authentication framework cryptographically signs outbound calls to combat caller ID spoofing. Telecom providers implement it on SIP infrastructure, requiring dedicated server environments where certificate management and signing keys are deployed with appropriate access controls.

Dedicated Server Telecom Software Stack

The 6 most widely deployed telecom platforms on dedicated servers:

All 6 platforms produce lower jitter, higher concurrent capacity, and more reliable real-time scheduling on dedicated servers compared to cloud VMs, attributes that directly determine voice and video quality scores.

Dedicated Servers for Telecommunications: How to Pick the Proper One?

1. The number of concurrent calls is a must for calculating the required CPU power. Formula: (Number of Calls * Codec CPU Factor) * 1.5 Headroom = minimum CPU needed before provider comparison.
2. Look for quality networks over sheer numbers in the network bandwidth. 1 Gbps with Tier 1 uplinks (NTT, Level 3) beats a 10 Gbps poorly routed uplink any day in terms of reliable RTP transmission. Check your packet loss/jitter to your regions of interest.
3. Ensure that NOC support is provided in such a way that they can take care of telecommunication systems around the clock. The SIP proxy failed at 2 AM, correct? It should not take any time to resolve such critical problems because of a lack of technical knowledge.
4. Make sure the server supports lawful intercept and related compliance requirements. Legal interception can only be implemented with a dedicated server that gives control over the routing software, and private network and VLANs are required to implement access.
5. It is recommended that you test your trial server under high loads rather than binding yourself to long-term contracts from the start. Use the SIPp utility to place 100-500 calls simultaneously and observe CPU and RAM consumption, packet loss, jitter, and one-way latency measurements.

Conclusion

Dedicated telecommunication infrastructure is the foundation that underpins telecommunication services provided on a carrier scale. For service providers such as VoIP, SIP, hosted PBX, and 5G edge providers, dedicated hardware is necessary to guarantee determinism and reliability that are impossible to maintain otherwise.

With AI and distributed 5G edge computing emerging as trends in telecommunications, dedicated servers remain the foundation where latency-sensitive software operates.

The best dedicated telecommunication infrastructure enables you to compete, ensures the security of customer information, and complies with all regulations of the markets you serve.

Frequently Asked Questions About Dedicated Server for Telecommunications

What is a dedicated server in telecommunications?

Dedicated servers in telecommunications are physical servers that serve just one telecommunications provider exclusively in order to manage voice, video, SIP, and data traffic without the use of any shared computing power. The benefit provided is the necessary latency, bandwidth, and ability to manage compliance within telecommunication services.

Why do VoIP vendors prefer dedicated servers, and not cloud hosting?

It stems from the need to provide high voice quality that requires maintaining the latency of no more than 150 ms on average and jitter no higher than 30 ms. It cannot be achieved consistently when using cloud VMs.

How many concurrent VoIP calls can a dedicated server handle?

A dedicated server running FreeSWITCH with a modern AMD EPYC processor, 128GB ECC RAM, and a 10Gbps network port handles 5,000–10,000 simultaneous G.711 calls. With compressed codecs like G.729 or OPUS, capacity increases to 20,000+ concurrent calls depending on transcoding requirements.

What telecom software runs on a dedicated server?

The 6 most widely deployed platforms are Asterisk (PBX), FreeSWITCH (soft switch), Kamailio (SIP proxy), OpenSIPS (SIP routing), FreeRADIUS (AAA authentication), and Coturn (WebRTC STUN/TURN). All perform measurably better on bare-metal hardware than on cloud VMs.

What compliance regulations apply to telecom dedicated servers in the US?

US telecom providers address 4 primary frameworks: CALEA (lawful intercept), FCC regulations (E911, CPNI, outage reporting), STIR/SHAKEN call authentication (mandatory since 2022), and PCI-DSS for billing systems. Providers serving health-related communications also face HIPAA requirements.

Difference between a dedicated server and a VPS for VoIP?

A dedicated server provides dedicated hardware with sub-5ms processing latency and hardware-based QoS support for RTP streams. VPS utilizes shared physical hardware resources among VMs, which results in scheduling delay and reduces voice call quality when scaled. VPS is suitable when fewer than 500 simultaneous calls have to be supported; dedicated servers are considered industry standards for production platforms.

How does a dedicated server facilitate 5G network functions?

Dedicated servers are used for deploying virtual and cloud-native network functions such as UPF and network slicing management systems. The use of bare-metal processing on a dedicated server avoids the issue of virtualization processing delay, which is against the objectives of 5G URLLC of sub-1 ms application delivery.

What hardware does a hosted PBX provider need?

A hosted PBX serving 1,000 simultaneous extensions requires: dual-core AMD EPYC or Intel Xeon at 3.0GHz+, 64–128GB ECC RAM, NVMe SSD in RAID 10 configuration, a 1Gbps network port with carrier peering, and redundant power supplies for continuous availability.