Crexendo Router Configuration Guide
Router Quality of Service (QOS) and Traffic Shaping settings are designed to enable the router to prioritize Voice traffic. These settings are essential to consistent and successful VoIP operation. If a customer chooses to use a router which is not on the Crexendo Recommended Router List, the customer assumes full responsibility for configuring the QOS and Traffic Shaping settings in the router. The basic port and IP address information listed below are to be used in the router configuration.
Crexendo SIP/RTP ports and SBC servers:
Ports and IP Subnet Ranges
Outlined are the outbound ports and IP addresses that need opened to support Crexendo services. In addition the SIP and RTP ports and IP ranges can be used to provide Quality of Service and traffic shaping.
Ports
| Port(s) | Protocol | Domain | Description |
| 5060,9000 | UDP | SIP Call Signaling | |
| 5061 | TCP | SIP Call Signaling (TLS) | |
| 16000-17990, 11780-1180 | UDP | External RTP Audio, Internal RTP Audio | |
| 80, 443 | TCP | phones.crexendo.com | Phone configuration and Firmware |
| 123 | UDP | us.pool.ntp.org | NTP Time Synchronization |
| 514 | UDP | Syslog Logging |
All ports shown above are on the WAN side (i.e. Crexendo phones communicate to remote servers that are
listening on these ports).
IP Subnet
| Subnet | Description |
| 184.178.213.0/255.255.255.0 | Tempe Data Center |
If you restrict traffic based on WAN source/dest IP addresses, please allow any traffic originating from or
terminating to the IP ranges indicated above. Also any IP addresses that belong to the domains listed in the
Ports table above.
Please note: Due to anomalies of routers that fall into categories such as consumer-class, open source, end
of life status, etc., Crexendo is unable to provide support for any quality or signaling issues for routers not
listed on the Crexendo Recommended Router List in the Customer Sales Agreement documentation.