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X Series Technical Requirements

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Revision History

Change Log  

May 28, 2026

Updated Datacenter IP Ranges: Added three new regional datacenters to the outbound connectivity and routing tables:      

  • Asia Pacific: Added Hong Kong Datacenter subnet (162.223.96.0/24).

  • Latin America: Added Brazil Datacenter subnet (3.44.193.0/27).

  • Europe: Added Paris Datacenter subnet (158.178.208.128/25).

Feb 26, 2026

Included hosted JSON files for 8x8 IP Ranges and Domains in the Additional Resources Section.

Feb 2, 2026

Updated IP Ranges and Domain sections with static tables.
Added basic topic index.

Nov. 19, 2025

Updated the Contact Center EmailSource IPs column to include:
Paris, FR (PA1): 158.178.208.128/25

Nov. 4, 2025

Updated supported web browser information in:
Application and Browser-Based Interfaces

Dec, 14th 2022

The following callstats.io subnets and ports are no longer used as of Jan 2023. Subnets132.226.0.0/26, 168.138.100.0/26, 140.238.129.64/26, 130.61.163.128/26, 158.101.200.64/26, 152.67.22.64/26, 193.122.65.0/26, 168.138.245.192/26, 152.67.146.0/26, 129.159.81.0/26, 158.101.40.128/26

Ports:  UDP 1024 - 65000 (Smart Connectivity Tests)

Oct, 21st 2022

Further clarification on UDP ports 3478-3480 and add recommendation to allow always

Aug, 17th 2022

8x8 Meet Anycast Subnets 13.248.132.124/32, 13.248.142.92/32,76.223.3.109/32,76.223.9.91/32 TCP:443 have been REMOVED. For proper functionality of 8x8 Meet it is recommended to place NO RESTRICTIONS ON OUTBOUND TCP Port 443 (HTTPS) traffic.

Aug, 6th 2022

Add reference that AnyCast DNS Servers are not recommended

June, 22nd 2022

Clarification on when NOT using SRTP for softphone (Work for Desktop/Work for Mobile) TCP Port 5199 is required

June, 8th 2022

Add link to Citrix Integration Documentation/Recommendations

May, 11th 2022

Update Activation ports for Audio Codes to include UDP 5499

May, 4th 2022

Add UK (152.67.137.148/32)  and US (132.226.123.231/32) Customer Experience Subnets

Feb, 14th 2022

Updates to Filtering functions for Subnets

Nov, 30th 2021

Correction/clarification Nomadic 911 is communicating over HTTPS (TCP 443) not HTTP.

Nov, 19th 2021

New Meetings Subnet in Japan. 155.248.191.0/24 UDP 10000. It will go into effect Dec 17th,2021 -- UPDATED

Oct, 14th 2021

Add additional dedicated sections for Contact Center as a Stand-Alone Service

Aug 18th, 2021

Added the following subnet: Canada (SaskTel): 207.195.32.64/27

May 19th, 2021

Removed the following subnets for 8x8 Meetings

  • 13.232.101.208/32

  • 3.0.167.49/32

  • 54.66.154.44/32

  • 35.182.147.109/32

  • 3.122.28.43/32

  • 63.32.210.13/32

  • 35.176.73.125/32

  • 54.233.170.124/32

  • 54.167.244.60/32

  • 18.220.195.182/32

  • 54.214.212.235/32

May 7th, 2021

Add 35.182.82.252/32 and 15.222.42.21/32 for Quality Management as REQUIRED when using the service/application.

April 28th, 2021

Updated Meetings Domains, better clarified required vs optional vs analytics, and removed outdated domains (for Meetings only)

March 18-19th, 2021

  • Add Nomadic 911 Location management information

  • Add bandwidth calculation information

  • SoHo Network Recommendations

  • Add new Subnet range for US West Data Center 216.59.141.0/24

March 9th, 2021

Update Contact Center Mail Server Addresses, minor corrections, and/or clarifications for Contact Center.Browser and TLS requirements added/updatedCORRECTION in the United States Quality Management SUBNETS  2.35.50.242/32 was corrected to be  52.35.50.242/32

February 22nd, 2021

Additional Clarity on FTP and Email Requirements

February 10th, 2021

8x8 is expanding geo-routing capabilities on April 2nd, 2021. 

  • Montreal: 168.138.74.128/26

  • Toronto: 140.238.129.0/26

  • Cardiff: 129.151.79.0/24

  • Hyderabad: 152.67.181.0/26

January 27th, 2021

For converged networks, a link to recommendation for setting up VLANs for Poly was provided.

January 13th, 2021

Add WorkW WebRTC Ports

November 21st, 2020

8x8 is expanding geo-routing capabilities on January 25, 2021.

  • Amsterdam: 158.101.200.0/26

  • Ashburn: 129.159.80.0/24

  • Sao Paulo: 168.138.245.128/25

  • Frankfurt: 130.61.163.0/25

  • London: 152.67.145.0/24

  • Phoenix: 158.101.41.0/24


Additionally added 8x8's Maestro Gateway IPs (for use when restricting access to your CRM from 8x8).

November 5th, 2020

New Domain Table format with filtering and export capability added

October 26th, 2020

New Subnet Table format with filtering and export capability added

October 16th, 2020

  • Add callstats ports

  • 66.81.220.0/24: UK Data Center Added

  • 66.81.216.0/24: AU Data Center Added

September 24th, 2020

Change the format of the IP Range table to make it easier to read/use, added new IPs for Quality Management Service.New 3rd party domain walkme.com addedNew 8x8 domain added 8x8cloud.com added

August 17th, 2020

ADD the following SUBNET for Australia 168.138.20.0/25India had the following CHANGE of SUBNETS 152.67.22.0/26 REPLACED 124.124.82.224/28

November 5th, 2020

New Domain Table format with filtering and export capability added

October 26th, 2020

New Subnet Table format with filtering and export capability added

October 16th, 2020

  • Add callstats ports

  • 66.81.220.0/24: UK Data Center Added

  • 66.81.216.0/24: AU Data Center Added

July 31st, 2020

Added the following Subnets UK: 109.70.59.0/24Update of 8x8 Meet IP subnets. New Ranges: 130.61.162.0/24
168.138.245.0/25
152.67.144.0/24
193.122.184.0/24
152.67.21.0/24
158.101.40.0/25
129.146.204.128/27
129.146.205.0/27
129.146.205.96/27
129.146.206.64/27
168.138.111.128/25
130.61.64.185
193.122.11.14
168.138.236.29
168.138.229.53
140.238.95.196
152.67.128.56
193.122.177.113
193.122.167.175
152.67.14.48
152.67.30.22
129.146.227.2
129.146.219.44
168.138.110.244
168.138.110.59
140.238.148.121
140.238.148.27
168.138.216.49
168.138.223.155
158.101.192.6
193.123.38.193
193.122.64.56
158.101.224.215
Update product names to reflect Work for Desktop and Work for MobileRemove range 50000-65535 UDP for RTP (Overlap)

July 20th, 2020

Add *.amazonaws.com for storing and downloading Call Center Analytic reports via S3 Signed URLs.Correction on Softphone Ports, removed 5443.

June 4th, 2020

Added the following Subnets UK: 185.173.48.64/26 and China: 101.227.59.128/27. *.callstats.io moved to 8x8 Core Domains from 3rd Party Domains. Add "Additional Resources" links for customers that are mixing both 8x8 and other Brands owned by 8x8.

Overview

This document provides a comprehensive guide to the network requirements necessary to enable 8x8 X Series services (Including Unified Communications, Contact Center Applications, 8x8 Work for Desktop and 8x8 Work for Mobile, UCaaS clients, Video Meetings, and current hardware offerings).

Keep in mind, 8x8 Work is a cloud-based communication platform designed to be carrier-agnostic, meaning it works over any internet connection (Wi-Fi or cellular data) rather than being tied to a specific mobile network provider (such as Comcast, Sparknet, CableOne, etc.). It functions on iOS and Android devices, as well as desktop computers.

Note

This document should supersede any other documentation that references IPs, Subnets, or Ports used by 8x8.

Topics included in this article:

Applies To

  • X Series Platforms

  • Technical Requirements

Abbreviations

Abbreviation

Meaning

8x8

8x8, Inc.

ALG

Application Layer Gateway

DNS

Domain Name System

DPI

Deep Packet Inspection

DSCP

Differentiated Services Code Point

EF

Expedited Forwarding

FTPS

FTP Secure (FTP over TLS)

GTM

Global Traffic Manager (8x8 DNS)

HTTPs

HyperText Transfer Protocol (Secure) 

IMAP

Internet Message Access Protocol

IP

Internet Protocol

KB

Knowledge Base System

LAN

Local Area Network

LDAPs

Lightweight Directory Access Protocol (Secure)

NTP

Network Time Protocol

POP3

Post Office Protocol version 3

QoS

Quality of Service

SIPs

Session Initiation Protocol (Secure)

SPI

Stateful Packet Inspection

sRTP

(Secure) Real-Time Protocol

TCP

Transport Control Protocol

TLS

Transport Layer Security

UDP

User Datagram Protocol

CC

8x8 Contact Center

VLAN

Virtual Local Area Network

8x8 Work for Desktop

8x8 Work for Desktop Application (8x8 UC Client for desktop)

8x8 Work for Mobile

8x8 Work for Mobile Application (8x8 UC Client for mobile devices)

WAN

Wide Area Network

ZTP

Poly Zero Touch Provisioning

Terminology

The following terms are essential in understanding your network requirements for 8x8:

  • Jitter: A measure of the time interval between data packets as they reach their destination. A low degree of jitter indicates a relatively steady stream of data packets.

  • Packet loss: Data, such as a VoIP transmission, is sent over the Internet in the form of packets. Packet loss occurs when some of these packets do not arrive at their destination. For each packet loss, a small amount of speech is cut out. If the degree of packet loss is high, conversation audio can sound very choppy, delayed, or unclear.

  • MOS score: The higher your MOS score, the better your VoIP experience will be. A MOS score is measured on a scale of 1 to 5, in which 5 represents the best possible call quality, and 1 represents the worst possible call quality. The range is subjective and based on normative data collected from experimental trials.

Firewall Guidelines

With regards to Firewall guidelines, It is advisable to either exempt 8x8 traffic from Deep Packet Inspection (DPI) and Intrusion Protection or ensure that appliances performing these operations can inspect the traffic without inducing measurable delay.

Default Recommendations

DNS

When using a Voice Only VLAN (a Virtual LAN with only Hard Phones, and no computers on it), 8x8 recommends that you set non-Anycast DNS servers (a list of recommended DNS servers can be found here) as Primary and the 8x8 GTMs, 8.28.0.9 and 192.84.18.11, as Secondary DNS servers in the VLANs DHCP Scope. An alternate option is to implement conditional forwarding of 8x8.com and packet8.net on your local DNS servers to 8.28.0.9 and 192.84.18.11, which are 8x8's DNS servers. It is not recommended to set conditional forwarding on your Data VLAN, and/or if you have only one network. If your network only consists of a single LAN (you are not using VLANs), 8x8 can set the DNS of your hard phones to the GTMs. This ensures proper Geo Routing of your 8x8 traffic to the closest 8x8 data center for each location.

8x8 UCasS 8x8 Work for Mobile and 8x8 Work for Desktop Clients use the 8x8 GTMs directly (with a fallback of the local DNS); thus, no additional work is needed to ensure proper routing of the traffic for UCaaS Clients.

8x8 does not recommend the use of DNS servers that make use of Anycast, as the Geo-Location can be unpredictable.

NTP

8x8's recommendation for NTP is to allow the default NTP setting of pool.ntp.org through the firewall. If your internal security requirements do not allow for external NTP, our advice is to use Option 42 in your DHCP scope to override the NTP setting to an NTP server of your choice. Should you not have an internal NTP server, use ntp2.packet8.net.

SIP-Application Level Gateway (ALG)

By default, 8x8 enables SRTP, which supersedes SIP-ALG functionality for a list of equipment that supports SRTP see our list of SRTP Compatible Equipment. 8x8 recommends for NON-SRTP Users that SIP-ALG be disabled on all your Layer 3 Network equipment, as SIP-ALG can cause issues with SIP messages. Please review and test to ensure that disabling SIP-ALG on your networking equipment will not impact other existing services on their network. For more information on SIP-ALG and possible solutions for disabling, see Disabling SIP-ALG in Your Router or Firewall.

SIP-ALG (Application Level Gateway) is a feature in which the layer three network equipment can manipulate the payload section of a SIP Packet to change the private addressing to be public address. As the phone or 8x8 Work for Desktop/8x8 Work for Mobile is not aware of the public address, all payload information references private addressing. Edge devices attempt to correct this by opening all SIP packets and manipulating the payload (body) of the packets by replacing private addresses with the public IP of the edge device and the Natted port. Unfortunately, many devices do not adequately manipulate these packets causing them to be invalid or contain incorrect information. For this reason, 8x8 recommends that this function be disabled for non-SRTP users.

Firewall Rules

Our recommendation is to create an Inbound and Outbound Policy "Internal to 8x8" rule in your firewall. This is a highly secure action as it is only opening inbound and outbound traffic towards a known destination (8x8 data centers). The list of 8x8 subnets (or Domains) is later in the document.

We recommend setting firewall session timers as follows to prevent premature NAT session changes that can cause de-registration, intermittent one-way audio, and phones not to pick up or ring when using certain firewalls: 

  • UDP session timer: 660 seconds 

  • TCP session timer (TLS connections only, port 5443): 300 - 700 seconds

Application and Browser-Based Interfaces

All 8x8 services are deployed within the IP address spaces listed in this document and identified by one of the domains listed in this document. Outbound requests made to these ranges on port 80 (HTTP) will be redirected to port 443 (HTTPS) and customers should allow both outbound ports to the IP/Domains.

To ensure the utmost security as you use your 8x8 services, access to the 8x8 Configuration Manager for Contact Center, Agent Workspace, Supervisor Workspace, 8x8 Work for Web, 8x8 Analytics suits, along with API calls to these systems up-to-date web browsers or libraries compliant with TLS 1.2 or better: The following browsers are recommended by 8x8:

  • Google Chrome

  • Microsoft Edge

Browsers that have also been validated:

  • Mozilla Firefox

  • Apple Safari

You can also click here to test your current browser’s security standard compatibility.

Proxy Server

8x8 only supports using a proxy for TCP port 80 and 443 (HTTP/HTTPS) traffic, all other traffic (Video and Audio) should bypass your proxy. 8x8 has made every attempt to ensure that 8x8 Work for Desktop application will respect the proxy settings of the system 8x8 Work for Desktop is running on. 8x8's web applications (Contact Center Agent Interface, Configuration managers, Analytics, and so forth) are, by nature, proxy aware and will respect the proxy setting of the system/browser.

Physical Instruments

For all approved telephony devices (endpoints), Outbound requests made via HTTP over TLS (HTTPS) on port TCP 443 to all 8x8 domains listed in the Domains section of this document without restriction to specific IP address ranges.

Provisioning Note: Poly devices can make use of Poly Zero Touch Provisioning (ZTP) and Poly PDMS service. Each of these services require HTTPS traffic to be allowed to Poly. For more details see Whitelist Zero Touch Provisioning Services for Obihai and Poly Devices. Device Access to Poly’s IPs is not required for 8x8 services, it will assist/speed deployment for new devices.

Citrix

Customers using 8x8 Work for Desktop should refer to Citrix VDI Integration with 8x8 Work for Desktop & Web for more details.

Network Considerations and Recommendations

Below are Network considerations and recommendations that customers should review and adapt as appropriate, as they may not ally to all installations.

Requirements

Parameters

Requirements

Poly Zero Touch Provisioning (ZTP)

Allow Poly Zero Touch Provisioning, alternative options can be found in Setting Up ZTP Override.

TLS

TLS 1.2 support is mandatory.

Wiring

At least Cat 5 (preferably Cat 6) wiring for networking devices, and IP phones that use a wired connection.

WiFi

Strong and consistent WiFi connection for networking devices, and IP phones that use WiFi.

PoE (recommended)

See Device Manufacturer Data Sheets.

Packet loss

0% packet loss

Jitter

<20 ms jitter

Network latency

<100 ms latency to 8x8 data centers. VoIP services are known to work even in higher latency conditions up to 150-200 milliseconds. However, this must be maintained consistently with no packet loss.

Bandwidth requirement

Voice UCaaS and CCaaS:    

  • G711 Codec: 90 kbps symmetric/call 

  • G722 Codec: 90 kbps symmetric/call (UC Calls Only)

  • G729 Codec: 35 kbps symmetric/call 

  • CCaaS add an additional 30kbps symmetric/call

Video Meetings Upstream:    

  • Up to 3Mbps for video

  • 40kbps for audio

Video Meetings Downstream:    

  • 2.5 Mbps for "On Stage" video in high quality

  • At least 500kbps for one incoming stream at the lowest quality

  • 200kbps per thumbnail stream (excluding on-stage)

  • 40kbps for audio

Downstream max bandwidth in a conference of n people would be 2.5Mbps + (n-2)*200kbps + 40kbps

Make sure you have 50% of your available bandwidth free to accommodate any spike in usage. Always assume that at least 35% of your users are on call at any time. However, depending on your company's use case, you may have a higher percentage. 

Note

When setting up devices to use an uncompressed voice CODEC, enable both G.711a law and G.711μ law capabilities available on the device. This prevents call quality loss by eliminating transcoding of international VoIP calls. This has no impact on bandwidth requirements, as either choice uses 80 Kbps per call. Transcoding does increase latency.

To estimate the network bandwidth required to support a VoIP station:

  1. Choose the CODECs you plan to deploy in your network.

  2. Multiply each CODEC's bandwidth requirements by the number of simultaneous calls the network must support. For example, if you are using a G.711a/μ CODEC, and you need to support 100 simultaneous calls, then multiply 90 Kbits per second by 100 calls to calculate that you need 8.79 Mbps of symmetrical transmit-and-receive bandwidth to support the estimated call volume.

  3. Add the bandwidth required to support VoIP traffic to the bandwidth required to support your existing network traffic.

When calculating total network load, be sure to include all applications that use the network, especially applications with high bandwidth requirements (such as video conferencing).

Contact Center hardware requirements

  •  Agents require a personal computer and a high-speed Internet connection capable of running currently supported browsers.

  • If an agent uses a Voice over IP (VoIP) softphone provided by 8x8, then the agent's computer and Internet connection must consistently perform well while processing all other desktop applications required for the agent's tasks.

  • Agent screens must support a resolution of no less than 1200 x 900 pixels. If available, a higher screen resolution is recommended.

SoHo (small office/home office) suggestions

For information on setting up SoHo networks see SoHo Networking Design Best Practices.

Considerations

Parameters

Considerations

If running a converged network for voice and data

Configure VLANs to separate the traffic. Ensure that the Phone VLAN has the following DNS and NTP in its DHCP scope:    

  • Use a non-Anycast DNS server as the VLAN's Primary DNS server

  • Use 8x8 DNS (Global Traffic Managers) servers 192.84.18.11 and 8.28.0.9 as secondary DNS servers 

  • Use 8x8 NTP server ntp2.packet8.net

Note

The recommended DNS does not resolve any other domain except 8x8.com and packet8.net. For more information on Poly and VLANs see Poly Devices VLAN Recommendations.

DHCP scope

Ensure that there are no rules specified to force any provisioning server or NTP server to deviate from default 8x8 values. For provisioning servers, you must disable Option 66/160.

Maximum Transmission Unit (MTU)

The network must support an MTU of 1500 bytes per packet. The MTU is the size of the largest protocol data unit that the layer can pass onwards. This is for Non-SRTP Communications only.

WAN failover

We highly recommend that you use dual WAN connections in a failover state by using WAN link redundancy (Active / Standby). Dual WAN connections in load balancing (Active / Active) may not be supported due to the multiple ways to implement, speak to your 8x8 engineer for supported options and/or recommendations.

VPN use cases

If your remote users or Internet egress use a VPN tunnel, make sure that the 8x8 traffic does not traverse it. Consider a Split Tunnel to have local Internet egress for 8x8 traffic. In addition, split DNS to resolve 8x8 domain queries locally. Speak to your 8x8 engineer for more information.

Internet Access Requirements

  • All 8x8 UC and Contact Center agents, supervisors, and administrators must have high-speed Internet access. Examples of high-speed Internet include DSL, Cable, or most corporate LANs.

  • Although 8x8 UC and Contact Center can interoperate with high-speed satellite connections, the round-trip transmission delay inherent in all satellite connections is likely to result in an undesirable degradation in performance.

  • Note

    Dial-up Internet connections are not supported.

NAT Requirements

  • 8x8 UC and Contact Center works with typical default stateful inspection firewall settings.

  • 8x8 Contact Center requires standard NAT with any VoIP Application Layer Gateway (ALG) address fix up features disabled when using a softphone.

  • The 8x8 Contact Center browser and VoIP phone sessions periodically generate activity to keep stateful inspection ports open.

  • 8x8 Contact Center Agents using Counterpath software-based softphones (such as eyeBeam) may need to configure any firewall products (for example, Windows firewall, Symantec, or Trend Micro) to allow the softphones to receive calls.

QoS / Priority

The basic approach of handling QoS for 8x8 traffic within your network is by DSCP markings as provided by the applications and approved devices. When configuring QoS, on circuits that support QoS, external to your network 8x8's recommendation is to identify 8x8 traffic based on source/destination network, (i.e., not by DSCP markings, ports, channels, etc.). RTP will make up 90+% of your traffic. That way, any of your traffic that is sourced/destined to any of the 8x8 networks should be treated with the highest priority.

If the majority of your users are on Wi-Fi rather than Ethernet, make sure you follow the best practices in Wi-Fi deployment to ensure plenty of coverage.

8x8 Meetings does not currently mark the meetings traffic; our recommendation is to set priority (EF) on the predictable port of UDP 10000.

8x8 DSCP / CoS Values Applied

Endpoint Type

Traffic Type / Application

COS Value (Decimal)

DSCP (Decimal)

Name

Windows / Non-Admin

Voice Media - Real-Time

CS7

DSCP 56

 

Windows / Non-Admin

SIP Signalling

CS5

DSCP 40

 

Windows / Admin

Voice Media - Real-Time

EF

DSCP 46

Expedited Forwarding

Windows / Admin

SIP Signalling

AF31

DSCP 26

Assured Forwarding

Mac / iOS

Voice Media - Real-Time

EF

DSCP 46

Expedited Forwarding

Mac / iOS

SIP Signalling

AF31

DSCP 26

Assured Forwarding

Android

Voice Media - Real-Time

EF

DSCP 46

Expedited Forwarding

Android

SIP Signalling

AF31

DSCP 26

Assured Forwarding

Poly

Voice Media - Real-Time

EF

DSCP 46

Expedited Forwarding

Poly

SIP Signalling

AF31

DSCP 26

Assured Forwarding

8x8 Outbound Datacenter Ports

Traffic Requiring Outbound Connections from within the customer network to the 8x8 Cloud.

Traffic Source & Purpose

Applies To

Protocols

Destination Ports

Device 

  • Provisioning

  • Configuration

  • Software Update

All Certified Physical Phones & ATAs

  • HTTP

  • HTTPS

TCP 80, 443

Device Secure SIP Signalling

All Certified Physical Phones & ATAs

SIPS (Secure SIP)

TCP 5443

Device Corporate Directory

Certified Physical Phones

LDAPS

TCP 636

Device Network Time

All Certified Physical Phones & ATAs

NTP

  • UDP

  • TCP 123

Can be provided locally via DHCP Option 42

Device Domain Name System

All Certified Physical Phones & ATAs

DNS

  • UDP 53

  • TCP 53

Can be provided locally via DHCP Option

Device SIP Signalling

All Certified Physical Phones & ATAs

SIP

  • UDP 5199,5299,5399

Device SIP Activation

All Certified Physical Phones & ATAs

SIP

  • UDP 5060 (Phones and ATAs except Audio Codes)

  • UDP 5499 (Audio Codes ONLY)

Softphone Application & Browser

  • Authorization

  • Messaging

  • Presence

  • Configuration

  • Administration

  • Reporting

  • Quality Management

  • Microservices

  • 8x8 Work for Desktop & 8x8 Work for Mobile

  • Admin Console

  • Analytics

  • Contact Center Agent, Supervisor

  • Quality Management

HTTPS

TCP 443

Softphone Application Secure SIP Signalling (Default)

  • 8x8 Work for Desktop

  • 8x8 Work for Mobile

SIPS (Secure SIP)

TCP: 5401

Softphone Application

SIP Signalling (When SRTP is Disabled this port is required. If you are using SRTP, the default setting, it is optional)

  • 8x8 Work for Desktop

  • 8x8 Work for Mobile

SIP  

TCP: 5199

Real-Time Audio

Voice Call Audio

  • Physical Phones

  • 8x8 Work for Desktop & 8x8 Work for Mobile

SRTP (Secure RTP)

  • UDP 24000 - 30999 

  • UDP 38000 - 44999

  • UDP 50000 - 65535

  • UDP 52000 - 58999

Real-Time Audio

  • WorkW

  • WebRTC

  • UDP 20000 - 40000

8x8 Meet
 

  • 8x8 Work for Desktop

  • 8x8 Work for Mobile

  • Browser

  • HTTPS

  • RTP / WebRTC

  • RTP / WebRTC

  • TCP 443

  • UDP/TCP 443

  • UDP 10000

Optional Services

Applications Requiring Outbound Connections

The following are optional items that may not be required. Consult your 8x8 team to validate whether these scenarios are applicable to your specific use cases.

Traffic Source & Purpose

Applies To

Protocols

Destination Ports 

Nomadic 911 Location Management

Location Manager Application (also referred to as ERS Server communications)

HTTPS

  • TCP 443

  • Domain: lm.911.intrado.com

  • Domain: lm20.911.intrado.com

  • IP: 208.71.176.31

  • IP: 208.71.179.31

  • IP: 208.71.176.58

  • IP: 208.71.179.58

Nomadic 911 Location Management

Physical Phone (also referred to as HELD Server communications)

HTTPS

  • TCP 443

  • Domain: lis.911.intrado.com

  • Domain: service.911.intrado.com

  • IP: 208.71.179.32

  • IP: 208.71.176.32

  • IP: 208.71.176.55

  • IP: 208.71.179.55

Quality Management Screen Recording Streaming screens

Screen Recording Client in Quality Management

HTTPS

TCP 443

VCC FTPS Call Recording Download

Downloads of contact center call recordings using FTP over TLS (FTPS).

FTPS Note: FTPS is not the same as SFTP (SSH Based).

  • Control Connection:         

    • TCP: 21 Explicit

    • TCP: 2121 Explicit

    • TCP: 990 Implicit

  • Data XFER Ports: UDP:30000-30999

 8x8 Contact Center Platform URL Guide 

Bria Softphone

Standalone contact center softphone

  • SIP

  • RTP

  • UDP: 5060 Default

  • UDP: 5061 Alternate/Optional

  • UDP High Ports (1024 - 65535)

Zoiper Softphone

Standalone contact center softphone

  • SIP

  • RTP

  • UDP 5060, 5061

  • UDP High Ports (32000 - 65535)

Network Utility*

  • Media Tests

  • Fragmentation Test

  • BufferBloat Test

  • NAT Test

Network Assessment *8x8's recommendation is to always allow these ports

  • RTP

  • STUN

  • TURN

  • UDP 3478-3480

Wavecell API

Video API

  • HTTP

  • HTTPS

  • WSS

  • UDP 10000 - 20000

SIP Trunks / TIE Trunks      

  • SIPs Signalling

  • sRTP

See customized Statement of Work for the unique implementation

Applications Requiring Incoming Connections

Traffic Source & Purpose

Destination Ports

Source IPs

Contact Center Email POP3/IMAP email access

  • For POP3 email support, enable port TCP 110.

  • For POP3 SSL, enable port TCP 995.

  • For IMAP email support, enable port TCP 143.

  • For IMAP SSL, enable port TCP 993.

  • For SMTP email support, enable port TCP 25.

  • For SMTP TLS email support, enable port TCP 587.

  • For SMTP SSL email support, enable port TCP 465.

Note: custom ports can be configured.

  • US-West: 8.21.164.0/24 

  • US-East: 8.28.3.0/24

  • Brazil: 168.90.173.112/28

  • Canada: 142.165.219.0/24

  • Europe2: 217.163.57.0/24

  • Europe3: 109.70.58.0/24

  • Paris, FR (PA1): 158.178.208.128/25

  • Hong Kong: 103.252.162.0/24

  • Hong Kong Datacenter: 162.223.96.0/24

  • Australia: 103.239.164.0/24

  • Bell Canada: 50.100.15.0/24

SIP Trunks

  • SIPs Signaling

  • sRTP

See customized Statement of Work for the unique implementation.

8x8 Datacenter IP Ranges & Domains

Note

In the process of connecting to Secure HTTP servers and setting up TLS connections, the certificates used in the connections will be validated by the issuing authority. Ensure you allow access to any/all issuing authorities.

Provisioning Note: Poly devices can make use of Poly Zero Touch Provisioning (ZTP) and Poly PDMS service. Each of these services require HTTPS traffic to be allowed to Poly. For more details see Whitelist Zero Touch Provisioning Services for Obihai and Poly Devices. Device Access to Poly’s IPs is not required for 8x8 services, it will speed deployment for new devices.

IP Ranges

Below is a list of IP Ranges that are used by 8x8 products and applications. Access Control List (ACL) and Quality of Service (QoS) flags indicate if the subnet should be included in your ACL and/or QoS Lists. There is an export option at the top of the list. When a Port range of * is referenced it refers to All Ports listed above in the  Data Center Ports  section.


JSON versions of this table are found at the bottom section of this article under the Additional Resources section.

Region Name

Service Type

Subnet

Port

ACL

QoS

Anycast/Global

Cloudflare CDN

104.16.109.61/32

TCP:443

1

0

Anycast/Global

Cloudflare CDN

104.16.110.61/32

TCP:443

1

0

Anycast/Global

Required Core Services

13.248.142.77/32

TCP:443

1

0

Anycast/Global

Required Core Services

13.248.145.23/32

TCP:443

1

0

Anycast/Global

Required Core Services

76.223.15.160/32

TCP:443

1

0

Anycast/Global

Required Core Services

76.223.20.131/32

TCP:443

1

0

Anycast/Global

Reserved for Future Use

209.94.72.0/22

*

1

1

Asia Pacific

8x8 Meet

168.138.216.49/32

TCP:443,UDP:443

1

1

Asia Pacific

8x8 Meet

168.138.223.155/32

TCP:443,UDP:443

1

1

Asia Pacific

ap-southeast-1 (Meeting Singap

18.139.118.128/27

UDP:10000

1

1

Asia Pacific

Hong Kong Datacenter

103.252.162.0/24

*

1

1

Asia Pacific

Hong Kong Datacenter

162.223.96.0/24

*

1

1

Asia Pacific

Maestro GW (CRM ACL)

52.64.74.212/32

TCP:443

1

0

Asia Pacific

Maestro GW (CRM ACL)

54.79.107.91/32

TCP:443

1

0

Asia Pacific

Maestro GW (CRM ACL)

54.79.122.211/32

TCP:443

1

0

Asia Pacific

Required Core Services

13.248.132.108/32

TCP:443

1

0

Asia Pacific

Required Core Services

13.248.138.121/32

TCP:443

1

0

Asia Pacific

Required Core Services

76.223.13.178/32

TCP:443

1

0

Asia Pacific

Required Core Services

76.223.7.179/32

TCP:443

1

0

Asia Pacific

Singapore Datacenter

117.20.40.192/28

*

1

1

Asia Pacific

Singapore Datacenter

146.235.23.192/26

*

1

1

Asia Pacific

Tokyo-Meetings

155.248.191.0/24

UDP:10000

1

1

Australia

8x8 Meet

168.138.110.244/32

TCP:443,UDP:443

1

1

Australia

8x8 Meet

168.138.110.59/32

TCP:443,UDP:443

1

1

Australia

8x8 Meet

168.138.111.128/25

UDP:10000

1

1

Australia

ap-southeast-2 (Meeting Sydney

3.106.23.128/27

UDP:10000

1

1

Australia

Australia Datacenter

103.239.164.0/24

*

1

1

Australia

Australia Datacenter

168.138.20.0/25

*

1

1

Australia

Australia Datacenter

66.81.216.0/24

*

1

1

Australia

Quality Management

13.54.106.138/32

TCP:443

1

0

Australia

Quality Management

3.104.150.195/32

TCP:443

1

0

Australia

Quality Management

3.104.151.2/32

TCP:443

1

0

Australia

Quality Management

3.104.151.242/32

TCP:443

1

0

Australia

Quality Management

3.104.155.121/32

TCP:443

1

0

Australia

Quality Management

54.153.174.25/32

TCP:443

1

0

Canada

8x8 Meet

140.238.148.121/32

TCP:443,UDP:443

1

1

Canada

8x8 Meet

140.238.148.27/32

TCP:443,UDP:443

1

1

Canada

Call Recording Servers

207.195.32.64/27

TCP:443

1

0

Canada

Canada Datacenter

142.165.219.0/24

*

1

1

Canada

Canada Datacenter

67.225.14.144/28

*

1

1

Canada

Maestro GW (CRM ACL)

35.182.71.246/32

TCP:443

1

0

Canada

Maestro GW (CRM ACL)

52.60.186.245/32

TCP:443

1

0

Canada

Montreal Datacenter

168.138.74.128/26

*

1

1

Canada

Quality Management

35.182.115.172/32

TCP:443

1

0

Canada

Quality Management

35.182.123.207/32

TCP:443

1

0

Canada

Quality Management

35.183.163.16/32

TCP:443

1

0

Canada

Quality Management

35.183.201.82/32

TCP:443

1

0

Canada

Quality Management

35.183.211.136/32

TCP:443

1

0

Canada

Quality Management

35.183.224.105/32

TCP:443

1

0

Canada

Quality Management

52.60.133.25/32

TCP:443

1

0

Canada

Quality Management

52.60.32.244/32

TCP:443

1

0

Canada

Quality Management (Req)

15.222.42.21/32

TCP:443

1

0

Canada

Quality Management (Req)

35.182.82.252/32

TCP:443

1

0

Canada

Required Core Services

13.248.132.114/32

TCP:443

1

0

Canada

Required Core Services

13.248.142.126/32

TCP:443

1

0

Canada

Required Core Services

76.223.16.174/32

TCP:443

1

0

Canada

Required Core Services

76.223.2.173/32

TCP:443

1

0

Canada

Toronto Datacenter

140.238.129.0/26

*

1

1

China

China Datacenter

101.227.59.128/27

*

1

1

Europe

8x8 Meet

130.61.64.185/32

TCP:443,UDP:443

1

1

Europe

8x8 Meet

140.238.95.196/32

TCP:443,UDP:443

1

1

Europe

8x8 Meet

152.67.128.56/32

TCP:443,UDP:443

1

1

Europe

8x8 Meet

158.101.192.6/32

TCP:443,UDP:443

1

1

Europe

8x8 Meet

193.122.11.14/32

TCP:443,UDP:443

1

1

Europe

8x8 Meet

193.123.38.193/32

TCP:443,UDP:443

1

1

Europe

8x8 Meet

130.61.162.0/24

UDP:10000

1

1

Europe

8x8 Meet

152.67.144.0/24

UDP:10000

1

1

Europe

eu-central-1 (Meeting Frankfo

3.123.12.160/27

UDP:10000

1

1

Europe

Frankfurt Datacenter

130.61.163.0/25

*

1

1

Europe

Maestro GW (CRM ACL)

35.176.164.119/32

TCP:443

1

0

Europe

Maestro GW (CRM ACL)

35.176.234.255/32

TCP:443

1

0

Europe

Maestro GW (CRM ACL)

52.56.196.74/32

TCP:443

1

0

Europe

Netherlands Datacenter

158.101.200.0/26

*

1

1

Europe

Netherlands Datacenter

64.95.100.96/28

*

1

1

Europe

Paris Datacenter

158.178.208.128/25

*

1

1

Europe

Required Core Services

13.248.140.65/32

TCP:443

1

0

Europe

Required Core Services

13.248.145.116/32

TCP:443

1

0

Europe

Required Core Services

3.9.159.0/27

TCP:443

1

0

Europe

Required Core Services

76.223.14.171/32

TCP:443

1

0

Europe

Required Core Services

76.223.18.166/32

TCP:443

1

0

India/Jeddah

8x8 Meet

152.67.14.48/32

TCP:443,UDP:443

1

1

India/Jeddah

8x8 Meet

152.67.30.22/32

TCP:443,UDP:443

1

1

India/Jeddah

8x8 Meet

158.101.224.215/32

TCP:443,UDP:443

1

1

India/Jeddah

8x8 Meet

193.122.64.56/32

TCP:443,UDP:443

1

1

India/Jeddah

8x8 Meet

152.67.21.0/24

UDP:10000

1

1

India/Jeddah

Hyderabad Datacenter

152.67.181.0/26

*

1

1

India/Jeddah

India Datacenter

152.67.22.0/26

*

1

1

Latin America

8x8 Meet

168.138.229.53/32

TCP:443,UDP:443

1

1

Latin America

8x8 Meet

168.138.236.29/32

TCP:443,UDP:443

1

1

Latin America

8x8 Meet

168.138.245.0/25

UDP:10000

1

1

Latin America

Brazil Datacenter

168.138.245.128/25

*

1

1

Latin America

Brazil Datacenter

168.90.173.112/28

*

1

1

Latin America

Brazil Datacenter

3.44.193.0/27

*

1

1

Latin America

sa-east-1 (Meeting Sao Paolo)

18.229.100.64/27

UDP:10000

1

1

United Kingdom

Cardiff Datacenter

129.151.79.0/24

*

1

1

United Kingdom

Customer Experience

152.67.137.148/32

TCP:443

1

0

United Kingdom

eu-west-2 (Meeting London)

3.9.41.96/27

UDP:10000

1

1

United Kingdom

Quality Management

18.130.16.212/32

TCP:443

1

0

United Kingdom

Quality Management

18.130.18.18/32

TCP:443

1

0

United Kingdom

Quality Management

3.8.107.238/32

TCP:443

1

0

United Kingdom

Quality Management

35.176.213.157/32

TCP:443

1

0

United Kingdom

Quality Management

35.177.27.132/32

TCP:443

1

0

United Kingdom

Quality Management

35.177.58.140/32

TCP:443

1

0

United Kingdom

Quality Management

35.178.208.221/32

TCP:443

1

0

United Kingdom

Quality Management

35.178.242.83/32

TCP:443

1

0

United Kingdom

Quality Management

52.56.140.99/32

TCP:443

1

0

United Kingdom

Quality Management

52.56.173.204/32

TCP:443

1

0

United Kingdom

Quality Management

52.56.189.61/32

TCP:443

1

0

United Kingdom

UK Datacenter

109.70.58.0/24

*

1

1

United Kingdom

UK Datacenter

109.70.59.0/24

*

1

1

United Kingdom

UK Datacenter

152.67.145.0/24

*

1

1

United Kingdom

UK Datacenter

185.173.48.64/26

*

1

1

United Kingdom

UK Datacenter

217.163.57.0/24

*

1

1

United Kingdom

UK Datacenter

66.81.220.0/24

*

1

1

United Kingdom

UK Datacenter

91.236.117.0/24

*

1

1

United States

8x8 Meet

129.146.219.44/32

TCP:443,UDP:443

1

1

United States

8x8 Meet

129.146.227.2/32

TCP:443,UDP:443

1

1

United States

8x8 Meet

193.122.167.175/32

TCP:443,UDP:443

1

1

United States

8x8 Meet

193.122.177.113/32

TCP:443,UDP:443

1

1

United States

8x8 Meet

129.146.204.128/27

UDP:10000

1

1

United States

8x8 Meet

129.146.205.0/27

UDP:10000

1

1

United States

8x8 Meet

129.146.205.96/27

UDP:10000

1

1

United States

8x8 Meet

129.146.206.64/27

UDP:10000

1

1

United States

8x8 Meet

158.101.40.0/25

UDP:10000

1

1

United States

8x8 Meet

193.122.184.0/24

UDP:10000

1

1

United States

Customer Experience

132.226.123.231/32

TCP:443

1

0

United States

Maestro GW (CRM ACL)

34.210.124.154/32

TCP:443

1

0

United States

Maestro GW (CRM ACL)

35.153.28.172/32

TCP:443

1

0

United States

Maestro GW (CRM ACL)

35.163.17.165/32

TCP:443

1

0

United States

Maestro GW (CRM ACL)

35.168.184.179/32

TCP:443

1

0

United States

Maestro GW (CRM ACL)

52.11.53.3/32

TCP:443

1

0

United States

Maestro GW (CRM ACL)

52.45.12.242/32

TCP:443

1

0

United States

Maestro GW (CRM ACL)

52.70.44.5/32

TCP:443

1

0

United States

Performance Monitoring

35.155.33.148/32

TCP:443

1

0

United States

Phoenix Datacenter

158.101.41.0/24

*

1

1

United States

Quality Management

100.24.138.19/32

TCP:443

1

0

United States

Quality Management

18.207.17.202/32

TCP:443

1

0

United States

Quality Management

18.210.227.214/32

TCP:443

1

0

United States

Quality Management

18.211.30.153/32

TCP:443

1

0

United States

Quality Management

18.212.44.232/32

TCP:443

1

0

United States

Quality Management

18.235.118.25/32

TCP:443

1

0

United States

Quality Management

3.83.62.171/32

TCP:443

1

0

United States

Quality Management

3.85.150.14/32

TCP:443

1

0

United States

Quality Management

3.86.124.117/32

TCP:443

1

0

United States

Quality Management

3.89.13.72/32

TCP:443

1

0

United States

Quality Management

3.90.23.190/32

TCP:443

1

0

United States

Quality Management

3.91.164.8/32

TCP:443

1

0

United States

Quality Management

34.202.185.172/32

TCP:443

1

0

United States

Quality Management

34.210.112.178/32

TCP:443

1

0

United States

Quality Management

34.212.53.26/32

TCP:443

1

0

United States

Quality Management

34.213.220.197/32

TCP:443

1

0

United States

Quality Management

34.237.214.158/32

TCP:443

1

0

United States

Quality Management

35.161.5.126/32

TCP:443

1

0

United States

Quality Management

35.162.170.255/32

TCP:443

1

0

United States

Quality Management

35.170.137.234/32

TCP:443

1

0

United States

Quality Management

35.175.90.124/32

TCP:443

1

0

United States

Quality Management

52.35.50.242/32

TCP:443

1

0

United States

Quality Management

52.42.100.84/32

TCP:443

1

0

United States

Quality Management

52.45.194.239/32

TCP:443

1

0

United States

Quality Management

52.7.210.48/32

TCP:443

1

0

United States

Quality Management

52.89.212.132/32

TCP:443

1

0

United States

Quality Management

54.145.163.56/32

TCP:443

1

0

United States

Quality Management

54.148.199.210/32

TCP:443

1

0

United States

Quality Management

54.149.163.109/32

TCP:443

1

0

United States

Quality Management

54.201.101.254/32

TCP:443

1

0

United States

Required Core Services

13.248.132.105/32

TCP:443

1

0

United States

Required Core Services

13.248.140.87/32

TCP:443

1

0

United States

Required Core Services

3.14.30.96/27

TCP:443

1

0

United States

Required Core Services

76.223.4.132/32

TCP:443

1

0

United States

Required Core Services

76.223.9.159/32

TCP:443

1

0

United States

Santa Clara Datacenter

162.221.236.0/23

*

1

1

United States

Santa Clara Datacenter

192.84.16.0/22

*

1

1

United States

Santa Clara Datacenter

216.59.136.0/24

*

1

1

United States

Santa Clara Datacenter

63.209.12.0/24

*

1

1

United States

Santa Clara Datacenter

8.21.164.0/24

*

1

1

United States

Santa Clara Datacenter

8.5.248.0/23

*

1

1

United States

SV2 Next Gen

216.59.141.0/24

*

1

1

United States

us-east-1 (Meeting Virginia)

3.219.176.32/27

UDP:10000

1

1

United States

us-west-2 (Meeting Oregon)

34.223.80.128/27

UDP:10000

1

1

United States

Virginia Datacenter

129.159.80.0/24

*

1

1

United States

Virginia Datacenter

162.221.238.0/23

*

1

1

United States

Virginia Datacenter

8.28.0.0/22

*

1

1

Domains

Below is a list of domains that are used by 8x8 products and applications. There is an export option at the top of the list. When a Port Used range of * is referenced it refers to All Ports listed above in the Data Center Ports section.

JSON versions of this table are found at the bottom section of this article under the Additional Resources section.

Domain Name

Name of Application or Service

Port Used

Domain Owner

*.8x8.com

8x8 Core Domains

*

8x8

*.8x8cloud.com

8x8 Core Domains

*

8x8

*.callstats.io

8x8 Core Domains

*

8x8

*.cloud8.net

8x8 Core Domains

*

8x8

*.p8t.us

8x8 Core Domains

*

8x8

*.packet8.net

8x8 Core Domains

*

8x8

*.wavecell.com

8x8 Core Domains

*

8x8

*.8x8.com

8x8 Media Domains

*

8x8

*.packet8.net

8x8 Media Domains

*

8x8

*.8x8.vc

8x8 Video Meetings (Required)

*

8x8

*.jitsi.net

8x8 Video Meetings (Required)

*

8x8

8x8.vc

8x8 Video Meetings (Required)

*

8x8

jitsi.net

8x8 Video Meetings (Required)

*

8x8

*.dxi.eu

8x8CoreDomains(Deprecated)

*

8x8

*.easycallnow.net

8x8CoreDomains(Deprecated)

*

8x8

*.easycontactnow.com

8x8CoreDomains(Deprecated)

*

8x8

*.amplitude.com

8x8VideoMeetings(Analytics)

TCP:443

3rd Party

*.google.com

8x8VideoMeetings(Analytics)

TCP:443

3rd Party

*.googleapis.com

8x8VideoMeetings(Analytics)

TCP:443

3rd Party

*.googleusercontent.com

8x8VideoMeetings(Analytics)

TCP:443

3rd Party

*.gstatic.com

8x8VideoMeetings(Analytics)

TCP:443

3rd Party

www.google-analytics.com

8x8VideoMeetings(Analytics)

TCP:443

3rd Party

*.dropbox.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.dropboxapi.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.dropboxcaptcha.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.dropboxstatic.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.dropboxusercontent.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.live.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.microsoft.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.microsoftonline-p.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.microsoftonline.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.msauth.net

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.youtube.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

www.gravatar.com

8x8VideoMeetings(Optional)

TCP:443

3rd Party

*.apigee.io

API

TCP:443

3rd Party

*.cloudflare.net

DDoS mitigation,Internet security,distributed domain-name-server services

TCP:443

3rd Party

*.okta.com

SSO via Okta

TCP:443

3rd Party

*.amazonaws.com

Storage and downloading Call Center Analytic reports via S3 Signed URLs

TCP:443

3rd Party

*.walkme.com

Training,Configuration assistance

TCP:443

3rd Party

Contact Center as a Stand Alone Service

When using Contact Center as a stand-alone service (not using 8x8 UC as a voice path/answering point). If you are using 8x8's XCaaS services, this section does not apply.

Computer hardware

  • Agents require a personal computer and a high-speed Internet connection capable of running Microsoft Internet Explorer 11, Firefox, or Chrome quickly when accessing popular search sites such as Google and Yahoo.

  • If an agent uses a Voice over IP (VoIP) softphone provided by 8x8, then the agent's computer and Internet connection must consistently perform well while processing all other desktop applications required for the agent's tasks.

  • Agent screens must support a resolution of no less than 1200 x 900 pixels. If available, a higher screen resolution is recommended.

Firewall and Network Address Translation (NAT) Requirements

  • 8x8 Contact Center works with typical default stateful inspection firewall settings.

  • 8x8 Contact Center requires standard NAT with any VoIP Application Layer Gateway (ALG) address fix up features disabled.

  • The 8x8 Contact Center browser and VoIP phone sessions periodically generate activity to keep stateful inspection ports open.

  • For organizations with restrictive firewall settings, 8x8 Contact Center recommends stateful inspection to open the following ports automatically when needed:

  • Agent browser sessions use TCP ports 80 and 443.

  • VoIP softphones use UDP port 5060, plus UDP ports in the range of 10000-35000.

  • The Collaborate feature uses TCP port 5907.

  • Downloading call recordings through FTPS clients uses TCP port 21 and TCP ports in the range of 30000-30999.

  • Agents using Counterpath software-based softphones (such as eyeBeam) may need to configure any firewall products (for example, Windows firewall, Symantec, or Trend Micro) to allow the softphones to receive calls.

Additional Resources

The following resources are intended for customers who are using Jitsi, Wavecell, or other companies/brands owned by 8x8 outside of their 8x8 resources/applications. 

The following resources are intended for customers who are using 8x8 Voice + Microsoft Teams. There are no 8x8 specific network requirements for these users. The Teams applications (mobile, desktop, browser) and any Teams-certified phones communicate directly with Microsoft and do not communicate directly with 8x8.