Patton SmartNode SN4970A/4E120VRHP/EUI PRI VoIP Gateway | 4 T1/E1/PRI interface for 120 simultaneous phone or fax calls

SKU: 4448 Category:





Cloud Enabled The SmartNode™ SN4970A/4E120VRHP/EUI VoIP Gateway offers Enterprises a cost-effective solution to IP-enable legacy PBX systems. The SN4970A/4E120VRHP/EUI is a member of the SN4970A product series. Evolving from Patton’s award winning SmartNode 4970 Series, the next generation SmartNode 4970A Series comes now with Trinity software containing a wide set of features.

Like every SmartNode™, the SN4970A supports every industry-standard CODEC to deliver toll-quality voice on every call. The Unified Communications Agent™ (UCA) provides any-to-any multi-path switching (simultaneous SIP, ISDN, and POTS calls with routing and conversion between TDM/PSTN and IP/Ethernet networks—plus T.38 and SuperG3 FAX). VoIP-over-VPN with voice encryption provides secure voice and data via IPsec with AES/DES strong encryption and automated keying via Internet Key Exchange (IKE). In addition, advanced call-router functionality includes least-cost call routing with flexible dialed-number plan support.

The SmartNode survivability suite offers PSTN fallback to ensure business continuity in case the IP network fails. Furthermore, SmartNode’s unique high-precision clock delivers first-line IP telephony service in demanding ISDN and DECT environments with reliable FAX and modem performance. In addition, SmartNode delivers a smooth transition to VoIP with strong number portability support accepting incoming calls from the PSTN throughout the VoIP service provider's number porting process.

Preserve investments in legacy phone equipment while taking the next steps toward unified communications with the SN4970A VoIP Gateway. Providing 4 T1/E1/PRI and a 10/100/1000 Ethernet for 120 VoIP calls, the SN4970A/4E120VRHP/EUI delivers a reliable, cost-effective solution for the Enterprise.





Convert Legacy PBX to VoIP




SmartNode 4970

Additional information

Weight 2.00 lbs
Dimensions 5.00 × 5.00 × 5.00 in


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  • Trinity OS– Advanced feature set including SIP TLS/SRTP, IPv6 ready, and Cloud capableSoftware Comparison
  • 120 VoIP calls (Non-upgradeable)—with four T1/E1/PRI ports and a single Gigabit Ethernet port.
  • Proven Interoperability—SIP interop with major IP PBX, Softswitch and VoIP Service Providers. Over 100,000 SmartNode deployments worldwide. ISDN/PSTN compliance in nearly every country.
  • Transparent Telephony Features—Complex number manipulation and mapping for seamless integration with existing infrastructures, CLIP, CLIR, hold, transfer and much more.
  • High Precision Clock—Delivers DECT PBX interoperability with reliable fax performance.
  • Flexible Mounting Options—The device can be placed on a desktop or installed in a 19-inch rack using the optional rack ear kit (INS-KIT-RACKEARS-11/19)
  • Supported by SmartNode™ Redirection Service:A free service enabling zero-touch mass deployments for Service Providers and Distributors with auto-provisioning servers (Learn More).


PSTN Four T1/E1/PRI ports (NE/TE) * Signaling support (ISDN DSS-1, NI-2, Q.SIG) * ISDN AOC/ECT * ISDN speech, audio & data (Fax Gr 4, UDI 64, RDI64) * ISDN supplementary services * CAS protocols: R2/MFC-R2 (Q.400?Q.490 and Configurable country profiles), fallback-relays on 4 port versions
VoIP SIPv2 (SIP Info, Update, PRACK, Privacy, Refer), B2BUA
Voice Processing Codec G.711 a-law/mu-law, G.723, G.729ab, G.726, G727, T.38 fax relay (9.6 k, 14.4 k) * G.711 transparent fax and bypass * 128 ms echo cancellation
Call Routing and Services Regular expression call routing and manipulation * number blocking * short-dialing * digit collection, distribution and hunt groups
Data Interfaces One 10/100/1000 TX Ethernet Port * Autosensing * Auto-MDI * Full-duplex
Management Web/HTTP, CLI with local console & remote Telnet access * HTTP/TFTP configuration & firmware loading * SNMP MIB II and product MIB * SYSLOG * Secure autoprovisioning for both firmware & unit/subscriber configuration * Built-in diagnostic tools (trace, debug, call generator)
Power External Power: 100?240VAC (50/60 Hz)

Desktop metal chassis

Dimensions: 30.1W x 4.5H x 18.1D cm (11.9W x 1.8H x 7.1D in.) 

Weight < 30 oz (850g)
Power Consumption < 15W
Temperature 32 to 104F (0 to 40C)
Humidity Up to 90%, non-condensing
Compliance EMC: EN55022 and EN5502 * Safety: EN 60950 * CE * FCC Part 15 Class A; Part 68; CS-03

Ordering Information

# Model # Description Availability
  SN4970A/4E120VRHP/EUI SmartNode VoIP GW, 4 E1/T1 PRI, 120 VoIP Calls not upgradable, or 15 SIP-SIP Calls (SIP b2b UA) upgradable (max. 80), failover relay, High Precision 5ppm Clock, optional SIP-TLS, SRTP, 1x Gig Ethernet, external UI power (100–240 VAC) NA/EU General Availability