![Amazon.com : Patton Electronics - SN4970/4E30V120R/EUI - SmartNode 4 T1/E1 PRI VoIP Gateway, 1x GigEthernet, 30 VoIP Channels; upgradeable to 120, Failover Relay, External UI Power, IPv6 Ready. : Office Products Amazon.com : Patton Electronics - SN4970/4E30V120R/EUI - SmartNode 4 T1/E1 PRI VoIP Gateway, 1x GigEthernet, 30 VoIP Channels; upgradeable to 120, Failover Relay, External UI Power, IPv6 Ready. : Office Products](https://m.media-amazon.com/images/I/41I03AsQK+L._AC_UF894,1000_QL80_.jpg)
Amazon.com : Patton Electronics - SN4970/4E30V120R/EUI - SmartNode 4 T1/E1 PRI VoIP Gateway, 1x GigEthernet, 30 VoIP Channels; upgradeable to 120, Failover Relay, External UI Power, IPv6 Ready. : Office Products
![Amazon.com : Patton Electronics - SN4141/2ETH4JO4V/EUI - Patton SmartNode 4140 SN4141/2ETH4JO4V/EUI VoIP Gateway - 2 x RJ-45-4 x FXO - Gigabit Ethernet - Rack-mountable : Office Products Amazon.com : Patton Electronics - SN4141/2ETH4JO4V/EUI - Patton SmartNode 4140 SN4141/2ETH4JO4V/EUI VoIP Gateway - 2 x RJ-45-4 x FXO - Gigabit Ethernet - Rack-mountable : Office Products](https://m.media-amazon.com/images/I/21eSgt57HkL._AC_UF894,1000_QL80_.jpg)
Amazon.com : Patton Electronics - SN4141/2ETH4JO4V/EUI - Patton SmartNode 4140 SN4141/2ETH4JO4V/EUI VoIP Gateway - 2 x RJ-45-4 x FXO - Gigabit Ethernet - Rack-mountable : Office Products
![Amazon.com : Patton Electronics - SN4838/4JS4JOC/EUI - SmartNode 4 FXS & 4 FXO VoIP IAD, Integrated V.35 WAN, H.323 and SIP, External UI Power. : Voip Telephone Products : Office Products Amazon.com : Patton Electronics - SN4838/4JS4JOC/EUI - SmartNode 4 FXS & 4 FXO VoIP IAD, Integrated V.35 WAN, H.323 and SIP, External UI Power. : Voip Telephone Products : Office Products](https://m.media-amazon.com/images/I/314J4oQboDL._AC_UF894,1000_QL80_.jpg)