VoIP IP Addresses for configuring firewalls

The intent of this list is to provide the raw information needed for configuring advanced firewalls, usually in a business or complex network setup. This information is usually not required for residential products.

 

IP Address Ranges

For continued operation of your voice services, all of the IP addresses below must be added to your firewall configuration.

Westnet utilizes automatic failover to the next available cluster during times maintenance and faults, therefore your equipment will need to be able to connect all the clusters at any time to maintain reliability.

Service/Locations IP Subnets (CIDR) IP Network Range
National Services
(Session Balancing)
203.173.44.0/24
  • 203.173.44.0 - 203.173.44.255
Brisbane Network
(Signalling & Media)
203.55.228.192/26
  • 203.55.228.192 - 203.55.228.255
Sydney SBC Cluster
(Signalling & Media)
203.55.231.192/26
  • 203.55.231.192 - 203.55.231.255
Melbourne SBC Cluster
(Signalling & Media)
203.55.229.192/26
  • 203.55.229.192 - 203.55.229.255
Adelaide SBC Cluster
(Signalling & Media)
203.2.134.0/25
  • 203.2.134.0 - 203.2.134.127
Perth SBC Cluster
(Signalling & Media)
203.59.49.0/26
  • 203.59.49.0 - 203.59.49.63
Configuration and Firmware (Business Voice services)
  • 203.55.231.64/27
  • 203.206.62.0/27
 

DNS Servers

(for Westnet Internet Customers)

  • 203.0.178.191
  • 203.215.29.191
  • 203.0.178.191
  • 203.215.29.191

NTP Server (Time Sync)

(for Westnet Internet Customers)

  • 203.0.178.191
  •  203.0.178.191

Note: The Config/Firmware download servers may automatically redirect customer equipment to the vendor website for firmware download. 
 

Protocols and Ports

Protocol Name

UDP/TCP Ports used by Protocol
SIP (VoIP Signalling) Both UDP & TCP

5060, 5061 & 5070

RTP (VoIP Audio/Video) UDP Only 15000-49999
DNS Both UDP & TCP 53
NTP (Time Sync) UDP Only 123
Configuration and Firmware (Business Voice services)  TCP Only 80 & 
443

Note: This information is subject to change without notice, however we will endeavor to keep this page up-to-date.