Supported Models: Patton SmartNode 4171, SN4970A, SN4940, SN4950, SN4960, SN4970, SN4980, SN4990

To add this PSTN gateway in SIP Trunks you need to have installed the latest firmware available from Patton.

⚠ Important:

• The device must be in the same LAN subnet and/or locally routed subnet as 3CX, including site to site VPN.
• After connecting the gateway to your network, Patton recommends using their SmartNode Discovery Tool to help you find its IP address on your network.

Step 1: Add and Choose Device

Go to “SIP Trunks” in 3CX Management Console and:

1. Click on “Add Gateway” and in “Select Brand” specify “Patton”.
2. Select your model/device, e.g. “Patton ISDN E1”, “Patton ISDN T1”, “Patton Trinity ISDN E1 (SN4171/SN4970A)” or “Patton Trinity ISDN T1 (SN4171/SN4970A)”.
   📄 Note: E1 lines are also known as PRI, S2M, while T1 is commonly used in the USA.
3. Set the “Number of Physical PSTN Ports on device” to the total number of the device ports, not the ports to be used.
4. Set the “Main Trunk No” to your line number acting as a catch-all destination, i.e. your main number.
5. Press “OK” to save your configuration.

Step 2: PSTN Line Setup

• 

Now you need to define these device and line-specific options:

1. “Registrar” – enter the IP address for your Patton FXO device. The gateway is set with this static IP after the configuration is uploaded.
2. “Device Subnet Mask” – set the network mask for the device.
3. “Tone Set Selection” – select the country in which you are using this device. If the country is not listed, inquire your telco for the tone set used for your line and select a country with this specific tone set.
4. “Number of SIM Calls” – enter the number of ISDN ports to be used, i.e. less than or equal to the number of physical ports on the device. For each port used, calculate and enter the respective value based on your device type:

• For a T1 – multiply the number of ports to use by 23, e.g. for 2 ports enter 46 SIM Calls
• For an E1 device – multiply the number of ports to use by 30, e.g. for 2 ports enter 60 SIM Calls

Step 3: Port Configuration

In “Options” tab > “PSTN Gateway Options” section, set these options for outbound calls to the PSTN network:

1. “Signalling Protocol” select depending on the interface type:

1. for E1, the default option is DSS1.
2. for T1, NI2 is the default option.

2. “Overlap Dialing” –  set to “Yes” for the gateway to get any further digits after the initial call is received and ensure that all digits are sent to the 3CX Phone System. This may cause some delay to the incoming call.
3. “Hunting Mode” – all ports are placed in a hunt group, select how the Patton device allocates the ports while placing outbound calls:

1. “Normal” – always start from the first port.
2. “Cyclic” – spread the calls evenly across all ports in a round-robin manner.

📄 Note: Ports already in use are skipped and the next available port is used.

4. “Default IP Route” – enter the default network gateway to be used by the Patton device.
5. “DNS Server IP Address” – set the DNS server IP to be used by the Patton device.
6. Click “OK” to save your configuration.

Step 4: Upload Configuration

1. Click the ”Generate config file” for the 3CX Management Console to open the gateway’s web interface on the “Import Configuration” page.
2. Save the generated configuration file to upload onto the gateway device.

📄 Note: Patton devices accept only filenames with the characters

,

,

,

.

3. Access the gateway’s web UI:

• On newer Trinity firmware devices, expand the menu and go to “System” > “Configuration File” and then press the “+” button.
• On older firmware devices go to “Import Configuration” page, e.g. 
  http://192.168.9.45/imp-cfg.html

   .

4. Click on “Browse” / “Choose File”, select the generated configuration file to upload and click “OK” / “Import”.
5. Reboot your gateway device to apply the uploaded configuration.

6. After the device reboots, verify that the device’s “Port/Trunk” status in 3CX Management Console is now available, i.e. changes from red to green.

Step 5: Add Inbound Rules

See the Inbound Rules guide for more info on how to manage inbound calls.

Step 6: Add Outbound Rules

See the Outbound Rules guide on creating outbound rules for routing outgoing calls.

 

Reference:

https://www.3cx.com/voip-gateways/patton-sn4940-sn4950-sn4960/