Server Calculator

This page provides a server calculator that can be used to compute the server configuration required for deploying P‑Series Cloud PBXs.

Specify the required capacity in the fields below, then click “Calculate”. The calculator will provide the recommended server configuration values.

Number of P-Series Cloud PBX

Number of concurrent calls

Single-node Deployment high-availability Deployment

Calculate

Server Configuration Recommended Values:

YCM Server

Number of Servers	1
Operating System	Ubuntu 24.04 LTS - 64 bit Note：Set the default system language to English.
Supported Virtual Machine Types	If deploying in a data center, the following types of virtual machines are supported: Microsoft Hyper-v VMware KVM
vCPU	Intel brand, 4vCPU, 3GHz
Memory	8GB
Storage	Number of Disks	1
	Disk CapacityThe system disk is used for storing the system data of the YCM server.	200GB
	Storage Performance	Minimum 150MB/s read speed and 150MB/s write speed.
LAN IP (Private IP)	1Note:Do not use IP addresses from the 172.17.x.x or 172.19.x.x network segments.
WAN IP (Public IP)	1
Domain Name	ycm.example.comExampleNote: Resolve this domain name to point to the public IP address of the YCM server.
SSL Certificate	Apply for a single-domain certificate for the domain ycm.example.comExample .Reference: Domain Certificate Requirements.
Ethernet Port	1
Network Configurations	Ensure that the YCM server has both inbound and outbound Internet access, and that the inbound and outbound IP addresses are consistent. Ensure mutual communication with other servers in both private and public network environments.

Load Balancer

Number of Servers	1
Operating System	Ubuntu 24.04 LTS - 64 bit Note：Set the default system language to English.
Supported Virtual Machine Types	If deploying in a data center, the following types of virtual machines are supported: Microsoft Hyper-v VMware KVM
vCPU	Intel brand, 4vCPU, 3GHz
Memory	8GB
Storage	Number of Disks	1
	Disk CapacityThe system disk is used for storing the system data of the load balancer.	200GB
	Storage Performance	Minimum 150MB/s read speed and 150MB/s write speed.
LAN IP (Private IP)	1Note:Do not use IP addresses from the 172.17.x.x or 172.19.x.x network segments.
WAN IP (Public IP)	1
Domain Name	*.cloud.example.comExampleNote: Resolve this wildcard domain name to point to the public IP address of the load balancer.
SSL Certificate	Apply for a wildcard certificate for the domain *.cloud.example.comExample.
Ethernet Port	1
Network Bandwidth	Scale with the supported number of extensions in the system 10,000 extensions → 60 Mbps 40,000 extensions → 240 Mbps 60,000 extensions → 360 Mbps
Network Configurations	The load balancer and the SBC server must be located on the same network segment to ensure communication and data forwarding between the servers. If deployed in a data center, ensure that policy-based routing is supported between the load balancer and the SBC server. Ensure that the load balancer has both inbound and outbound Internet access, and that the inbound and outbound IP addresses are consistent. Ensure mutual communication with other servers in both private and public network environments.

SBC Server

Number of Servers	≥ 2
Operating System	Ubuntu 24.04 LTS - 64 bit Note：Set the default system language to English.
Supported Virtual Machine Types	If deploying in a data center, the following types of virtual machines are supported: Microsoft Hyper-v VMware KVM
vCPU	Intel , 4vCPU, 3GHz
Memory	8GB
Storage	Number of Disks	1
	Disk CapacityThe system disk is used for storing the system data of the SBC server.	200GB
	Storage Performance	Minimum 150MB/s read speed and 150MB/s write speed.
LAN IP (Private IP)	1Note:Do not use IP addresses from the 172.17.x.x or 172.19.x.x network segments.
WAN IP (Public IP)	1
Domain Name	*.cloud.example.comExampleNote: Resolve this wildcard domain name to point to the public IP address of the SBC server.
SSL Certificate	Apply for a wildcard domain certificate for the domain *.cloud.example.comExample.
Ethernet Port	1
Network Bandwidth	Upstream: ≥ 50 Mbps Downstream: ≥ 50 Mbps
Network Configurations	Ensure that the SBC server has both inbound and outbound Internet access, and that the inbound and outbound IP addresses are consistent. Ensure mutual communication with other servers in both private and public network environments.

SBC Proxy Server

Number of Servers	2
Operating System	Ubuntu 24.04 LTS - 64 bit Note：Set the default system language to English.
Supported Virtual Machine Types	If deploying in a data center, the following types of virtual machines are supported: Microsoft Hyper-v VMware KVM
vCPU	Intel brand, 4vCPU, 3GHz
Memory	8GB
Storage	Number of Disks	1
	Disk CapacityThe system disk is used for storing the system data of the SBC Proxy server.	200GB
	Storage Performance	Minimum 150MB/s read speed and 150MB/s write speed.
LAN IP (Private IP)	1Note:Do not use IP addresses from the 172.17.x.x or 172.19.x.x network segments.
LAN IP (Private IP)	1Note: Beside the private IP address for the server, you need to additionally prepare an available private IP from the same subnet to serve as a virtual IP (VIP). Do not use IP addresses from the 172.17.x.x or 172.19.x.x network segments.
WAN IP (Public IP)	1
Domain Name	.proxy1.cloud.example.comExample Note:* The domain name is related to the Cloud PBX domain. If the Cloud PBX domain is ".cloud.example.com", the SBC Proxy server domain should be ".proxy1.cloud.example.com". The proxyN part in the domain name must start with proxy1 and increase numerically (e.g., proxy2, proxy3, etc.). Resolve this wildcard domain name to the public IP address of the SBC Proxy server.
SSL Certificate	Apply for wildcard domain certificate for the domain *.proxy1.cloud.example.comExample.Reference: Domain Certificate Requirement.
Ethernet Port	1
Network Bandwidth	Upstream: ≥ 50 Mbps Downstream : ≥ 50 Mbps
Network Configurations	Ensure that the SBC Proxy server has both inbound and outbound Internet access, and that the inbound and outbound IP addresses are consistent. Ensure mutual communication with other servers in both private and public network environments.

PBXHub Server

Number of Servers	2
Operating System	Ubuntu 24.04 LTS - 64 bit Note: Set the default system language to English.
Supported Virtual Machine Types	If deploying in a data center, the following types of virtual machines are supported: Microsoft Hyper-v VMware KVM
vCPU	Intel brand, 4vCPU, ≥ 2.5GHz
Memory	16GB
Storage	Number of Disks	3
	Disk 1 -- System DiskThe system disk used for mounting the system data of the PBXHub server.	200GB
	Disk 2 -- Data DiskThe PBX data disk used for storing the system data of all P‑Series Cloud PBXs within the PBXHub server.	200GB
	Disk 3 -- Recording DiskThe PBX recording disk used for storing the recording data of all P‑Series Cloud PBXs within the PBXHub server.	200GB
	Storage Performance	Minimum 150MB/s read speed and 150MB/s write speed.
LAN IP (Private IP)	1Note:Do not use IP addresses from the 172.17.x.x or 172.19.x.x network segments.
WAN IP (Public IP)	Not required
Domain Name	Not required
SSL Certificate	Not required
Ethernet Port	1
Network Port Speed	1000 Mbit/s
Network Configurations	Only outbound connections from the PBXHub server are allowed, and all inbound connections from the Internet are blocked. Ensure mutual communication with other servers.