The net2phone Canada Sonar service has been engineered to work in most environments without requiring changes to firewalls or other network components. Use this guide to review the firewall and network requirements that may be required to optimize your network for net2phone Canada’s Hosted PBX service.
Rogers Hitron CODA-4582 is not supported
The Rogers Hitron CODA-4582 modem/router combo is not compatible with net2phone Canada’s service. Neither a firmware update nor bridge mode will resolve issues caused by its DOCSIS processing. If you are using this device, contact net2phone Canada Support before proceeding with the rest of this guide.
Required protocols and ports
Ensure the following protocols and ports are allowed on your network for proper functionality.
| Service | Protocol | Ports | Direction | Purpose |
|---|---|---|---|---|
| SIP | UDP/TCP | 5060 | Outbound | Call signaling |
| Secure SIP (TLS) | TCP | 5061 | Outbound | Encrypted call signaling |
| WebRTC | TCP | 9002 | Outbound | WebRTC signaling |
| RTP (Audio) | UDP | 20000–37000 | Outbound | Voice audio |
| HTTP | TCP | 80 | Outbound | Device provisioning |
| HTTPS | TCP | 443 | Outbound | Secure provisioning and web access |
These connections are initiated by your phone to net2phone Canada’s soft-switch. If needed, allow connections to the following hosts:
proxy-pri.versature.comproxy-sec.versature.comproxy-ter.versature.comwebrtc-pri.versature.comwebrtc-sec.versature.com
SIP ALG must be disabled
Some routers and firewalls include a SIP ALG (Application Layer Gateway) feature that can interfere with call signalling and audio. Disable SIP ALG or SIP Helper in your router or firewall settings.
Phone provisioning services
Allow communication to the following servers so supported devices can download their configurations during initial setup.
| Device | Provisioning Server |
|---|---|
| Yealink | rpscloud.yealink.com |
| Poly | ztp.polycom.com |
If your router or firewall cannot whitelist domain names, use the resolved IP addresses and include the net2phone Canada IP block: 204.235.80.0/20.
Bandwidth requirements
Each concurrent phone call uses approximately 88 Kbps in both directions. If two internal extensions are communicating, bandwidth usage doubles. For lower bandwidth usage, other codecs may be available—please contact support for more information.
Quality of Service (QoS) and DiffServ prioritization
To ensure optimal voice quality, prioritize traffic marked with EF (Expedited Forwarding) using the following values:
| Setting | Value |
|---|---|
| EF DiffServ Decimal | 184 |
| EF DiffServ Hexadecimal | 0xb8 |
| EF DSCP Decimal | 46 |
| EF DSCP Hexadecimal | 0x2e |
Many third-party networks choose not to honour these markings; however, net2phone Canada’s equipment does add them to real-time packets.
Cisco device configuration
On Cisco devices, disable SIP Helper using the following commands:
router(config)#no ip nat service sip tcp port 5060router(config)#no ip nat service sip udp port 5060
Need help? Contact Support
For immediate assistance, contact Technical Support by dialing 611 from your net2phone Canada device or by calling 1-877-498-3772 and choosing option 3. Emails can be sent to support@net2phone.ca.
