System Requirements

Operating Systems

Note: Downloading ISL Light or running ISL Light Network Start executable will download the latest supported version for your operating system.

Microsoft Windows

Client Version	Server Version	ISL Light Version
Microsoft Windows 11	Microsoft Windows Server 2022	ISL Light 4.0.0 - 4.4.2116.x
	Microsoft Windows Server 2019	ISL Light 4.0.0 - 4.4.2116.x
Microsoft Windows 10 (32-bit and 64-bit)	Microsoft Windows Server 2016	ISL Light 4.0.0 - 4.4.2116.x
Microsoft Windows 8.1 (32-bit and 64-bit)	Microsoft Windows Server 2012 R2	ISL Light 4.0.0 - 4.4.2116.x
Microsoft Windows 8 (32-bit and 64-bit)	Microsoft Windows Server 2012	ISL Light 4.0.0 - 4.4.2116.x
Microsoft Windows 7 (32-bit and 64-bit)	Microsoft Windows Server 2008 R2	ISL Light 4.0.0 - 4.4.2116.x
Microsoft Windows Vista (32-bit and 64-bit)	Microsoft Windows Server 2008	ISL Light 3.0.0 - 3.5.5
Windows XP (32-bit and 64-bit)	Microsoft Windows Server 2003 R2	ISL Light 3.0.0 - 3.5.5
	Microsoft Windows Server 20003	ISL Light 3.0.0 - 3.5.5

Mac OS

Client Version	ISL Light Version
macOS 13.x Ventura	ISL Light 4.0.0 - 4.4.2116.x
macOS 12.x Monterey	ISL Light 4.0.0 - 4.4.2116.x
macOS 11.x Big Sur	ISL Light 4.0.0 - 4.4.2116.x
macOS 10.15 Catalina	ISL Light 4.0.0 - 4.4.2116.x
macOS 10.14 Mojave	ISL Light 4.0.0 - 4.4.2116.x
macOS 10.13 High Sierra	ISL Light 4.0.0 - 4.4.2116.x
macOS 10.12 Sierra	ISL Light 4.0.0 - 4.4.2031.107
OS X 10.11 El Capitan	ISL Light 4.0.0 - 4.4.2031.107
OS X 10.10 Yosemite	ISL Light 4.0.0 - 4.4.2031.107
OS X 10.9 Mavericks	ISL Light 4.0.0 - 4.4.2031.107
OS X 10.8 Mountain Lion	ISL Light 4.0.0 - 4.4.2031.107
Mac OS X 10.7 Lion	ISL Light 4.0.0 - 4.0.4
Mac OS X 10.6 Snow Leopard	ISL Light 4.0.0 - 4.0.4

Important: With macOS 10.14 Mojave Apple and macOS 10.15 Catalina Apple introduced additional changes to its Security settings which further affect the workflow when running ISL Online applications.

Please refer to the following topic for an explanation:

Linux

Linux kernel 2.4 and higher (64 bit)
glibc 2.12 or newer
systemd
X Window System

Tested on:

Ubuntu 16.04, 18.04, 20.04
Debian 10, 9
CentOS 8

Not supported:

Wayland
Linux 32-bit
arm64 architecture

Note: ISL Light 4.0.4 for Linux was the last version to support 32-bit kernels.

Chrome OS

Note: ISL Online provides remote viewing (but not remote control) of Chrome OS devices with the Android subsystem installed. On the other hand, Chrome OS users (with the Android subsystem installed) can access, view and control any Windows, Mac or Linux remote computer.

Mobile

iOS
Android

Internet Connection

Bandwidth minimum: 56 Kbps

Bandwidth consumption during audio/video call in ISL Light:

Video quality and mic/consumption	Network consumption resource manager [kb/s]	Network consumption net balancer [kb/s]
Video quality default high	21,5	23 - 62
Video quality default high + mic	25,5	20,5 - 69
Video quality snapshot high	13,2	10 - 12,5
Video quality snapshot medium	5,8 - 6,2	6 - 7
Video quality snapshot low	5,5	5,5 - 6,6
Mic only	3 - 4,5	7 - 8

Supported connection methods (ISL Light can work with any of the following):

direct outgoing TCP/IP connection to TCP port 7615 on ISL Conference Proxy server
WININET HTTPS connection to TCP port 443 on ISL Conference Proxy server
WININET HTTP connection to TCP port 80 on ISL Conference Proxy server
direct HTTPS connection to TCP port 443 on ISL Conference Proxy server
direct HTTP connection to TCP port 80 on ISL Conference Proxy server

Timeout for a specific connection method is 20 seconds for connection establishment - so total timeout for connection is less than 1 minute.

Supported network types are the following:

a computer with a static public IP
a computer with a dynamic public IP
a computer in a private network behind a firewall with a public IP performing NAT
a computer in a private network behind a http proxy offering http and/or https protocols