Optimize Dell SonicWALL SOHO Router for iProphet VoIP Telephones

The Dell SonicWALL SOHO router can be configured to open ports, prioritize voice traffic and set minimum bandwidth for the iProphet VoIP service. Follow the instructions below to configure your SonicWALL firewall.

NOTE: Based on available ISP bandwidth of 10Mbps/10Mbps (download/upload); accounting for 10 concurrent calls, adjust your numbers accordingly. One call requires approximately 90Kbps download/upload. 100Kbps was used in the example below for ease of calculation.

The router can be optimized by accessing the following:

1. The firewall’s interface
2. VoIP Settings
3. Firewall Settings 
4. Network Settings
5. Rules 

1. Access the firewall’s interface

1. Enter the firewall’s IP address in the address bar of your web browser.

NOTE: To check your firewall’s IP address, refer to your firewall’s documentation or contact the manufacturer for support.

2. Enter the firewall’s username and password. Click OK.

NOTE:  The default username and password is admin.

2. Access the VoIP Settings

1. Go to VoIP > Settings.

2. Put a check on Enable Consistent NAT.  

3. Disable/uncheck Sip Transformations. This will disable SIP ALG.

4. Click Accept to save the settings.

3. Access the Firewall Settings 

1. Go to Firewall Settings > BWM.

2. Under Bandwidth Managment Type, select Global.

3. Under Priority, disable EVERY category, except Medium. 

Set Medium values to:
Guaranteed : 30%
Maximum / Burst: 50%

Enable Realtime and set values to:
Guaranteed : 70%
Maximum / Burst: 100%

4. Click Accept to save the settings.

4. Access the Network Settings

1. Go to Network > Interfaces > X1 (WAN)

2. Under the General tab, click the Configure icon (on far right).

3. Go to Advance > Link Speed, and then set to Auto Negotiate (UNLESS there’s a need to set it to something specific).

4. Under Bandwidth Management set the following:

• Check the tickbox next to Enable Egress, and set Interface Egress Bandwidth to match the available bandwidth.
• Check the tickbox next to Enable Ingress, and set Interface Ingress Bandwidth to match the available bandwidth.

5. Click OK to save the settings.

10. Click Add under Services, and then add the following:

Name: RC1
Protocol:  UDP
Port Range: 1000-65535
Sub type: none
Click Add

Name: RC2
Protocol:  TCP
Port Range: 5060-6000
Sub type: none
Click Add

Name: RC3
Protocol:  TCP
Port Range: 80-80
Sub type: none
Click Add

Name: RC4
Protocol:  TCP
Port Range: 443-443
Sub type: none
Click Add

Name: RC5
Protocol: UDP
Port Range: 123-123
Sub type: none
Click Add
 

11. Still on Services under Service Groups, click Add Group, to add the services to a group. Name the group iProphet, and then highlight RC1 through RC5. Use the arrows in the box to move the highlighted information from left to right. Click OK.
 

5. Access Rules 

1. On the left side of the page, go to Firewall > Access Rules.

2. Click Add to add the rule for LAN-to-WAN and WAN-to-LAN.

3. Click the edit button  on both the LAN-to-WAN and WAN-to-LAN settings for RCFullRNGGrp, and go to the Ethernet BWM tab.

Ethernet Bandwidth Management

• Check the box next to Enable Outbound Bandwidth Management, and set the Bandwidth Priority to Realtime. 
• Check the box next to Enable Inbound Bandwidth Management, and set the Bandwidth Priority to Realtime.

4. Go to the QoS tab.

DSCP Marking Settings

• DSCP Marking Action: Explicit
• Explicit DSCP Value: 46 – Expedited Forwarding (EF)

5. Click OK to save.