loading spinner

ISDN BRI Gateways



Viewed products

Patton SmartNode 4120 - 1 BRI SN4120/1BIS2V/EUI View larger

Patton SmartNode 4120 - 1 BRI SN4120/1BIS2V/EUI


New product

Patton SmartNode™ 4120 ISDN BRI PSTN SN4120/1BIS2V/EUI Gateway converts up to four simultaneous phone or T.38 fax calls from SIP to ISDN BRI

More details

2 Items

In stock

289,92 €

Add to wishlist

Data sheet

Product TypeGateway
Connection TypeSIP
FE/GE Interfaces1
Ethernet Port10/100M
Telephone InterfacesBRI - RJ45
Rack MountNO

More info

For system integrators looking to connect a VoIP or Unified Communication solution to public or private ISDN lines, the SmartNode 4120 provides unparalleled ISDN to IP feature preservation. Like any SmartNode the 4120 provides advanced ISDN functionality such as Explicit Call Transfer (ECT) support and Advice of Charge (AOC) over SIP. Patton CPEs are interoperable with most IP PBX and Unified Communication vendors such as Asterisk, 3CX, Elastix, Microsoft, IBM, Swyx, SNOM One and many others. 

Compared to PC-based solutions that combine IP PBX and a PCI BRI cards, the SmartNode has several advantages, including: installation without additional drivers or software, operation without ventilation or hard disk, scalable without limitation, and service integration without downtime. SmartNode gateways can be combined in a cluster for simple and flexible redundancy solutions not available with PCI BRI cards. System administrators don't have to learn ISDN as industry standard protocols like SIP do the job of connecting the PSTN to your VoIP system. 


  • Up to Four Simultaneous SIP or T.38 Calls—With 1/2 ISDN So BRI ports and one 10/100Base-TX Ethernet port.
  • Proven Interoperability— Standard ISDN compliant and Interoperable with a wide range of IP-PBX and Unified Communication Systems.
  • Comprehensive Signaling & Protocol Support—Supports SIP, H.323, ISDN telephony plus T.38 and SuperG3 FAX over TDM/PSTN and IP/Ethernet services simultaneously.
  • Transparent ISDN Features—Complex number manipulation and mapping for seamless integration with existing infrastructures, CLIP, CLIR, AOC, PARE, hold, transfer and much more.
  • Management & Provisioning—Built-in Web-based management, SNMP, command line interface (CLI) and auto-provisioning for automated configuration distribution and software upgrades. RADIUS for call detail records (CDR) and user authentication.
  • Supported by SmartNode™ Redirection Service: A free service enabling zero-touch mass deployments for Service Providers and Distributors with auto-provisioning servers



LAN Connectivity


10/100Base-T Ethernet LAN • Auto- MDI-X • DHCP Client • PPPoE Client (multi-session) • SNTP • IP Multinetting • VLAN 


IP Quality of ServiceIEEE 802.1p, TOS, DiffServ Labeling • IEEE 802.1Q, VLAN Tag insertion/deletion (4,096 VLANs)
ManagementWeb-based GUI • Fully documented CLI • Telnet and HTTP access  • TFTP configuration upload and download • TFTP/HTTP firmware upgrade • SNMP agent, MIB II and enterprise MIB • Built-in diagnostic tools  • Auto-provisioning—configuration and firmware
Fax and Modem SupportT.38 fax over IP • Fax relay and bypass • Modem bypass
ISDN Specification1/2 port Euro-ISDN BRI/So RJ-45, TE • DSS-1, Q.921, Q.931 • Point-to-point & point-to-multipoint.
Voice SignalingSIPv2 • H.323v4 • SIP call transfer, redirect  • Overlap or en-bloc dialing • DTMF in-band & out-of-band • Configurable call progress tones • CLIP • CLIR • AOC • PARE
Call Routing & ServicesRegular expression number matching • Regular expression number manipulation • Least Cost Routing • Number blocking • Short-Dialing • Digit collection • Distribution-Groups & Hunt-Groups • 2nd call offering
Voice ProcessingG.711 • G.723.1 (5.3/6.3 kbps) • G.729, G.729a, G.729ab (8 kbps) • G.726 ADPCM (16, 24, 32, 40 kbps) • G.168 echo cancellation (25 ms) • Transparent ISDN data • Silence suppression and comfort noise • Adaptive and configurable dejitter buffer • Configurable packet length
Power Consumption< 4W
Temperature0 to 40°C (32 to 104°F)
HumidityHumidity: Up to 90% (non condensing)
Dimensions20.8W x 3.4H x 16.5D cm (8.2W x 1.3H x 6.5D in.)
Weight< 450 g (15.9 oz)
ComplianceFCC Part 15 Class B (US EMC) • CE per RTTE 99/5/EC (EMC and LVD) • Safety EN60950 • TBR-3 (ISDN 

15 other products in the same category: