Network and Firewall Requirements for TIPS Phones
As with all internet-connected technology, there are some requirements and best practices to be aware of when installing True IP phones.
Requirements
The phones must be able to communicate with our servers on specific ports. Please open the following ports to each of our server's IP addresses for VOIP communications.
SIP IP Addresses and Ports
Server
| Alias/Registration Proxy
| IP Address
|
atlanta-nms.trueipsolutions.com
| atlanta.outbound.tips
| 72.28.115.4
|
atl2-nms.trueipsolutions.com
| atl2-nms.outbound.tips
| 72.28.115.5
|
charlotte-nms.trueipsolutions.com
| charlotte.outbound.tips
| 198.24.51.162
|
dal-nms.trueipsolutions.com
| dallas.outbound.tips
| 192.235.96.195
|
mcnc1-nms.trueipsolutions.com
| mcnc1.outbound.tips | 152.46.24.12
|
mcnc2-nms.trueipsolutions.com
| mcnc2.outbound.tips
| 152.46.24.13 |
mcnc3-nms.trueipsolutions.com | mcnc3.outbound.tips | 152.46.24.14 |
mcnc4-nms.trueipsolutions.com | mcnc4.outbound.tips | 152.46.24.29 |
Purpose
| Protocol
| Port(s)
|
SIP Registration
| TCP/UDP
| 5060
|
SIP TLS Registration | TCP | 5061 |
RTP (Audio) Traffic
| UDP
| 5000-60000
|
Application Communication
| TCP
| 8001
|
Webphone Communication
| TCP
| 9002
|
DISCLAIMER: SIP Trunks and other SIP Devices that are not using the Registration Proxy FQDN and are using the IP Address for Registration will not automatically fail over to an alternate server in the event the primary registration server goes down.
Provisioning IP Addresses and Ports
Server
| IP Address
|
ndp.trueipsolutions.com
| 72.28.115.6
|
Yealink Remote Provisioning
Server | Domain Name | IP Address | Port | Description |
| Redirection Provisioning Service | rps.yealink.com
rpscloud.yealink.com | 20.242.144.0
20.242.144.1
52.71.103.102 | 443 (HTTPS), 5061 (phone_rps) | Yealink redirection service, for example, redirecting to our auto-provisioning server.
|
There are some requirements related to the autoprovisioning of the phones as well as some maintenance and troubleshooting functions. Our provisioning server does not require any specific ports to be opened for inbound communication, simply allow the phones to contact 72.28.115.6 for provisioning.
Fax Servers
Server
| IP Address
|
faxback1.trueipsolutions.com
| 198.24.51.177
|
faxback2.trueipsolutions.com
| 192.235.96.196
|
Yealink Management and Cloud Services
Yealink maintains several servers that we use for advanced troubleshooting, provisioning, and maintenance, please whitelist the following IP addresses and ports.
Updated 12/5/25
Server
| Domain Name | IP Address
| Port | Description |
Device Connection
| us-device-scheduler.ymcs.yealink.com | 20.242.144.3
| 443 (HTTPS) | Used for routing to the corresponding data center when devices are first connected. |
| us-app-scheduler.ymcs.yealink.com | 20.88.189.229
| 443 (HTTPS) | App report address |
| redirect.ymcs.yealink.com | 20.19.104.34
| 443 (HTTPS) | Used for routing to the corresponding data center when YRC/YUC devices are first connected. |
| us-device.ymcs.yealink.com | 20.242.144.4
| 8110 (Device Management protocol) | Device connection address |
| us-device-req.ymcs.yealink.com | 20.85.145.227
| 443 (HTTPS) | Hardware HTTP request address, used to distinguish between hardware long and short connection requests. |
| us-device-compat.ymcs.yealink.com | 20.242.144.6 | 8110 (Device Management protocol) | Compatible with MD5 certificate for device connection |
| us-device-compat-req.ymcs.yealink.com | 20.242.144.6 | 443 (HTTPS) | Compatible with MD5 certificate for device connectionf |
Update Service | update.yealink.com | 20.19.104.34 | 443 (HTTPS) | Address for firmware detection in the device's automatic update service. |
File upload/download | yiotbackenduseast1.blob.core.windows.net |
| 443 (HTTPS) | File upload address. |
| cdn-us-resource.ymcs.yealink.com |
| 443 (HTTPS) | File download address. |
| us-resource.ymcs.yealink.com | 20.85.145.227 | 443 (HTTPS) | Resource storage address. |
Reserved | 20.242.144.0/29 |
| 443,8110,8443,8445,8446 | Reserved |
Note: Yealink advises that the above IP addresses are subject to change without warning and suggests that network administrators whitelist the domains instead. We will make every effort to keep this table updated.
Domain |
*.ymcs.yealink.com |
*.yealink.com |
Network and Firewall Miscellaneous
- Phones do use LLDP and CDP by default. If not configured on your network it may need to be disabled on the phone.
- Phones can be tagged on a specific VLAN by way of configuration overrides from our servers if needed.
- Many firewalls employ SIP ALG in some form. This is harmful to SIP traffic more often than helpful. Research your firewall to determine the best way to disable SIP ALG.
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