Patton SmartNode 4131 VoIP-gateway - ISDN BRI, Gigabit Ethernet, SIP/H.323

The Patton SmartNode 4131 is a compact VoIP gateway designed to connect legacy ISDN BRI equipment to modern IP networks. It provides a single BRI S0 port (NT/TE configurable) and two Gigabit Ethernet ports, supporting up to 2 concurrent calls with high-quality voice codecs and advanced fax relay. Ideal for small offices or remote sites, it offers robust security, QoS, and management features.

Advantages

Seamless integration of ISDN phones or PBX into VoIP networks; supports both SIP and H.323 protocols; compact desktop form factor; easy configuration via web GUI, CLI, or SNMP; reliable T.38 fax support; comprehensive security including SIP TLS and SRTP.

Suitable for

• Small to medium businesses migrating from ISDN to VoIP
• Remote offices needing connectivity to central VoIP systems
• Integration of legacy ISDN equipment (phones, fax, PBX) into IP networks
• Cost-effective voice and fax over IP deployments

Key specifications

• VoIP Protocols: SIP, H.323
• ISDN Interface: 1 x BRI (S0) port, NT/TE configurable
• Ethernet: 2 x 10/100/1000Base-T (Gigabit Ethernet)
• Concurrent Calls: 2
• Voice Codecs: G.711 (a/µ-law), G.723.1, G.729ab, G.726
• Fax Support: T.38 Fax Relay
• Echo Cancellation: G.168-2002 (up to 128 ms tail length)
• DTMF: In-band, RFC 2833, SIP INFO
• Security: Firewall, VPN Pass-through, SIP TLS, SRTP, HTTPS, SSH
• QoS: TOS, DiffServ, 802.1p/Q VLAN tagging
• Management: Web GUI, CLI, SNMP, TR-069
• Power: External AC/DC adapter (100-240VAC, 50-60Hz)
• LED Indicators: Power, Status, LAN, WAN, BRI
• Form Factor: Desktop
• Operating Temperature: 0 to 40 °C (32 to 104 °F)

Recommendations

For optimal performance, use with a compatible SIP trunk or IP-PBX. Ensure network QoS is configured to prioritize voice traffic. The device supports up to 2 simultaneous calls, suitable for small offices with moderate call volume.