Network Equipment Compatibility
Use this guide to determine if your network equipment is compatible with Penguin VoIP phone service.
- The Session Initial Protocol Application Layer Gateway (SIP ALG) and Stateful Packet Inspection (SPI) need to be disabled on most routers and firewalls. If your device does not have these options or the options cannot be disabled, you may need to replace it.
- The setting listed may not be appropriate for the exact make, model, firmware, and version of the equipment in your network. Not all possible setting and configuration options are reflected.
Routers by Manufacture
Manufacturer
| Model
| Recommendations
|
Linksys
| E2500
| Disable SIP ALG and SPI Firewall.
|
Linksys
| E3200 v1
| Disable SIP ALG and SPI Firewall.
|
Linksys
| E3500
| Disable SIP ALG and SPI Firewall.
|
Linksys
| E4200 v1 and above
| Disable SIP ALG and SPI Firewall.
|
Linksys
| E900
| Disable SIP ALG and SPI Firewall.
|
Linksys
| EA4500 v1
| Disable SIP ALG and SPI Firewall.
|
Linksys
| EA6900 v1
| Disable SIP ALG and SPI Firewall.
|
Linksys
| RV042
| Disable load balancing and SIP helper.
|
Linksys
| RV082
| Disable load balancing and SIP helper.
|
Linksys
| WRT610N
| Upgrade to the latest firmware, then Disable SIP ALG and SPI Firewall.
|
Netgear
| R6300 v1
| Disable SIP ALG and Dos Protection.
|
Netgear
| WGR614 v8 and above
| Disable SIP ALG and DoS Protection.
|
Netgear
| WNDR3300
| Disable SIP ALG and DoS Protection.
|
Netgear
| WNDR3400
| Disable SIP ALG and DoS Protection.
|
Netgear
| WNDR3700 v1, v3, v4
| Disable SIP ALG and DoS Protection.
|
Netgear
| WNR1000 v2 and above
| Disable SIP ALG and Port Scan and DoS Protection. Update firmware.
|
Netgear
| WNR2000 v2 and above
| Disable SIP ALG and DoS Protection.
|
Netgear
| WNR3500L v1 and above
| Disable SIP ALG and DoS Protection.
|
Western Digital
| MyNet N600
| Disable SIP ALG.
|
ISP Equipment and cable/modem gateways
Make and Model
| Common ISPs
| Recommendations
|
Arris TG862
| Comcast/Xfinity
| Change Firewall to "Low", Firmware revision to 9.1.103m2b.sip.pc20.ct .
|
Cisco DPC3939
| Comcast Business
| Change Firewall to "Low", Firmware revision to P20-18v303r20421733.
|
Cisco DPC3939B
| Comcast Business
| Change Firewall to "Low", Firmware revision to v303r2042174.
|
Cisco DPC3941B
| Comcast Business
| Change Firewall to "Low", Firmware revision to v303r2042174.
|
Cisco DPC3941T
| Comcast Business
| Change Firewall to "Low", Firmware revision to P20-18-v303r20421733.
|
Edgemarc
| Various providers
| Disable SIP ALG and Option 66.
|
Netgear DG834G
| Various cable providers
| Disable SIP ALG and DoS.
|
Netopia 3000
| AT&T Uverse, Centurylink
| Disable SIP ALG.
|
Siemens SpeedStream 4200
| Windstream
| Disable SIP ALG.
|
SMC D3G
| Comcast Business
| Must DMZ to a compatible router. If not, may experience audio issues
|
Technicolor TC8305C
| Comcast/Xfinity
| Change Firewall to "Low", Firmware revision to 01.e6.01.22.25.
|
ZyXEL P-660HW
| CenturyLink DSL, Qwest
| Disable SIP ALG (May require Telnet).
|
ZyXEL P792H v2
| CenturyLink DSL, Qwest
| Disable SIP ALG (May require Telnet).
|
ZyXEL PK5001Z
| CenturyLink DSL, Qwest
| Disable SIP ALG (May require Telnet).
|
Firewalls and Enterprise equipment
| Manufacturer | Model | Recommendations |
| Checkpoint/Alteon | All models | Disable SIP ALG and set UDP Virtual Session Timeout to 3599 seconds. |
| Cisco | Meraki MX-60 | Put phones in an IP range and set to exclude content filtering. |
| Dell | Sonicwall | Enable Consistent NAT, disable SIP transformations, and create access rules (if necessary). |
| Draytek | Vigor (all models) | Disable SIP ALG (may require Telnet) and DoS protection. |
| Firebox | All models | Disable SIP ALG and create access rules. |
| Fortinet | Fortigate (all models) | Disable SIP helper and SIP ALG, then reboot the device. |
| Juniper | NetScreen (all models) | Disable SIP ALG, set UDP-ANY timeout to 10 minutes and disable UDP flood protection. |
| Juniper | SSG5 | Disable SIP ALG and create access rules. |
| Netgear | FVS336G Prosafe | Update to the latest firmware and disable SIP ALG and DoS. |
| Peplink | All models | Set SIP to Compatibility Mode in Service Passthrough section. |
| Sonicwall (Dell) | All models | Enable Consistent NAT, disable SIP transformations, and create access rules (if necessary). |
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