These devices have been thoroughly tested in actual working environments and have proven to work reliably. We recommend these devices to work with our hardware. If you have tested with any devices and would like us to display it here, please contact us. 

Compatible routers stock or with minimal changes.

Our recommendation:

Ubiquiti EdgeRouter - Disble SIP ALG, and the router supports upward of 500 users.

Other supported devices:

Apple Airport / Apple Airport Express
Status: Compatible  
Recommended Usage: This router supports 1-3 desk phones.  
Comments: Since this router does not offer Quality of Service, it is recommended to be used with minimal amounts of phones.  

Asus RT-N66U, RT-AC66U, RT-AC68U
Status: Compatible  
Recommended Usage: These routers have been tested with 1-50 phones  
Comments: This router is recommended due to the availability of Quality of Service settings. Upgrade to the latest firmware (3.0.0.4.376 as of this writing). SIP ALGs must be disabled on this router.
1. Log into the router's web interface
2. Go to Advanced Settings / WAN on left side.
3. From the tabs across the top, choose NAT Pass through.
4. Change SIP pass through to "Disable." Hit apply.
Reboot phones in order to update the NAT table. 

DD-WRT Firmware based routers
Status: Compatible  
Recommended Usage: Supports virtually unlimited devices  
Comments: The DD-WRT VOIP build works with relatively small configuration. Note that since this is an open source project, security may be affected.  

Cisco Routers (most)
Status: Compatible  
Recommended Usage: Cisco manfuctured after 2012 are known to support 1-50 phones  
Comments: Most Cisco routers seem to support Claricom's service very well. Please ensure that the model you are buying has Quality of Service / Bandwidth management settings.  

Cisco RV180W
Status: Compatible  
Recommended Usage: These routers have been tested with 1-50 phones  
Comments: A recommended device, that includes Gigabit ethernet, VPN and wireless capabilities.  

Cisco Linksys RV082, RV016, RV042, RV042G
Status: Compatible  
Recommended Usage: These routers support 1-50 phones  
Comments: These routers work well if properly configured. Please update to the latest firmware version ( v4.2.1.02 as of writing.) The MTU settings under 'Setup' -> 'Network' should be set to 1500 (Cable) or 1492 (DSL).  

Cisco/Linksys WRVS4400N
Status: Compatible  
Recommended Usage: This router supports 1-50 desk phones.  
Comments: Works well with minimal changes.  

Cisco/Linksys E1200, E2500, E3500
Status: Compatible  
Recommended Usage: This router supports 1-6 desk phones.  
Comments: These routers work well a few phones. Consider the small business edition for larger deployments.  

Cisco/Linksys WRT160N
Status: Compatible  
Recommended Usage: This router supports 1-3 desk phones.  
Comments: Entry level/Home use router. Should not put more than 3 phones. Consider Cisco's business line for a larger deployment.  

Cisco/Linksys WRT54G2
Status: Compatible  
Recommended Usage: This router supports 1-3 desk phones.  
Comments: Entry level/Home use router. Should not put more than 3 phones. Consider Cisco's business line for a larger deployment.  

Siemens Speedstream
Status: Compatible  
Recommended Usage: This router supports 1-3 desk phones.  
Comments: Basic router, should not be used for large deployments. Quality of Service cannot be setup on this router. Consider using it in bridge mode.  

These devices have been thoroughly tested in actual working environments and have proven to work reliably only after some configuration changes. Information technology professionals may usually get involved in settings these type of devices. Our team is also knowledgeable in settings these type of devices. 

Compatible routers with configuration changes. 

2Wire Routers and Modems / Gateways
Status: Changes required  
Recommended Usage: This router supports 1-4 desk phones.  
Comments: Disable SIP ALG. If this option is not available, please bridge to a router from our compatible list.  

D-Link DIR-615, HW Revision B only
Status: Changes required  
Recommended Usage: These routers have been tested with 1-4 phones  
Comments: Disable SIP ALG. Please upgrade to latest firmware (2.2.4 as of writing.) 
1. Click on Firewall settings
2. Under Application Level Gateway (ALG) Configuration
3. Uncheck the option.
 

D-Link DIR-625
Status: Changes required  
Recommended Usage: These routers have been tested with 1-4 phones  
Comments: Disable SIP ALG from the web interface. Using more than 4 phones, this router causes the rest of the phones to lose registration. We recommend using this router in very small deployments.  

D-Link EBR-2310, HW Revision B
Status: Changes required  
Recommended Usage: These routers have been tested with 1-50 phones  
Comments: Disable SIP ALG. Please upgrade to latest firmware (2.2.4 as of writing.) 
1. Click on Firewall settings
2. Under Application Level Gateway (ALG) Configuration
3. Uncheck the option.
 

Fortigate/Fortinet
Status: Changes required  
Recommended Usage: Disable SIP ALG  
Comments: Open the CLI and run the following commands:
config system settings
set sip-helper disable
set sip-nat-trace disable

Reboot the device

In the CLI type the following:
Config system session-helper
show
(now look for SIP, mostly it will be "12")
delete 12
Don't use any protection profiles on the firewall of the SIP rules.  

Juniper - Netscreen
Status: Changes required  
Recommended Usage: This router supports 1-50 desk phones.  
Comments: Disable SIP ALG on the Netscreen router. Click on Configuration page, then choose Advanced. Choose ALG, and uncheck the SIP check box.  

Motorola Surfboard
Status: Changes required  
Recommended Usage: This router supports 1-6 desk phones.  
Comments: Ensure that the firmware is currently up to date (v3.3 as of writing.) Disable SIP ALGs.  

Netgear FVG318
Status: Changes required  
Recommended Usage: This router supports 1-10 desk phones.  
Comments: Ensure that the latest firmware is updated to the latest release. Click on Rules on the left hand side. Disable SIP ALGs by checking the box.  

Netopia
Status: Changes required  
Recommended Usage: This router supports 1-10 desk phones.  
Comments: Disable SIP Passthrough by using the web interface. If the web interface does not have this option, you must manually telnet into the router. This procedure is advanced and should be carefully planned, as it may brick the router. Professional supervision may be required.
telnet into router, and type each of the following commands
configure
set ip sip-passthrough off
save
exit
Restart

On the Netopia 4622xlt
Telnet into the device
Use the arrow keys to highlight 'quick menu' and press "ctrl-n"
That brings you to the console.
type:
ip nat alg sip enable no
save
exit
restart
 

SMC 3100
Status: Not compatible unless bridged  
Recommended Usage: If bridged, it becomes a modem  
Comments: This router is not compatible with voip. This router should be put in bridge mode, and a compatible router should be used.  

Sonic Wall
Status: Compatible  
Recommended Usage: These routers can support virtually unlimited phones if configured by Sonic Wall technicians.  
Comments: Please see the adjustments below:
Firmware v5.8.12 or lower 
Disable SIP ALG

Firmware v5.8.13 and higher 
Enable 'Consistent NAT' 
Disable 'SIP Transformations'. 
Ensure that the MTU is set correctly for your ISP.

Select the Firewall Settings -> Edit LAN>WAN Rule -> Advanced
TCP Connection Inactivity Timeout (minutes) to 60
UDP Connection Inactivity Timeout (seconds) to 3600

Select the Firewall -> Access Rules and add a new rule:
Action: Allow
Service: Any
Source: WAN, Address Range 64.34.222.2 to 64.34.222.254
Destination: LAN, Address Range * to *
Comment: Claricom Hosted Voice System
If option appears: 'Allow Fragmented Packets', enable.
TCP Connection Inactivity Timeout (minutes) to 60
UDP Connection Inactivity Timeout (seconds) to 3600
Select the Firewall -> Access Rules and add a new rule:
Action: Allow
Service: Any
Source: WAN, Address Range 64.34.74.2 to 64.34.74.254
Destination: LAN, Address Range * to *
Comment: Claricom Hosted Voice System
If option appears: 'Allow Fragmented Packets', enable.
TCP Connection Inactivity Timeout (minutes) to 60
UDP Connection Inactivity Timeout (seconds) to 3600
 

Tomato Firmware Routers
Status: Changes required.  
Recommended Usage: These routers can support virtually unlimited phones if configured by Sonic Wall technicians.  
Comments: If only one phone can register at a time, it means that there is a bug into the firmware. It can be resolved using the following steps.
1. Click on Router settings 
2. Click on Advanced 
3. Click on Conntrack/Netfilter
4. Enable SIP option for Tracking/NAT helpers.  

Zxyel
Status: Changes required.  
Recommended Usage: This router can be bridged for optimal performance.  
Comments: It is recommended that this router be put into bridge mode. You may also disable SIP ALGs:
1. Telnet into router2. Choose System maintenance (24)3. Choose Command Interpreter mode (8)4. Type: ip nat service sip active 05. Reboot  

These devices have been thoroughly tested and have been found not to work with our voip service. Please note that many manufacturers constantly release firmware updates that could fix the underlying voice issues. If that's the case, we will try to keep this list updated. 

Incompatible routers. 

Actiontec GT704WG
Status: Incompatible  
Recommended Usage: Replace device  
Comments: This router tends to drop calls after a short period of time. Settings cannot be tweaked to resolve the issue. Please replace.  

Belkin (general)
Status: Incompatible  
Recommended Usage: Replace device  
Comments: Settings cannot be tweaked to resolve the issue. Please replace.  

D-Link DIR-825
Status: Incompatible  
Recommended Usage: Replace device  
Comments: Settings cannot be tweaked to resolve the issue. Please replace.  

D-Link WBR-1310
Status: Incompatible  
Recommended Usage: Replace device  
Comments: SIP ALGs cannot be disabled on this device. Phone registration issues and one way audio common. Replace device.  

Hitron CGN3 (Rogers Advanced WiFi Modem)
Status: Incompatible  
Recommended Usage: Replace device or put in bridge mode 
Comments: This router lacks the option to disable SIP ALGs. Users may put this device into bridge mode, using it alongside a compatible router. Rogers recommends placing phones in DMZ mode or using Port Forwarding. This will severely compromise the security of the phones. We highly recommend not following this path. There have been reports of Rogers technicians been able to disable SIP ALGs remotely.  

Linksys WRT54G, WRT54GX, WRT54GL, WRT54GS
Status: Incompatible  
Recommended Usage: Replace device or install 3rd party firmware 
Comments: Some of these routers support the DD-WRT VOIP firmware. We recommend either replacing the device or using the DD-WRT firmware. Contact support for help.  

Netgear FVS318, WGR614, WGT624, WRN2000
Status: Incompatible  
Recommended Usage: Replace device  
Comments: SIP ALGs cannot be disabled on this device. Phone registration issues and one way audio common. Replace device.  

SMC (general)
Status: Incompatible  
Recommended Usage: Replace device  
Comments: Phone registration issues and one way audio common. Replace device.  

Thompson TG-585
Status: Incompatible  
Recommended Usage: Replace device  
Comments: SIP ALGs cannot be disabled on this device. Phone registration issues and one way audio common. Replace device.