Patton SmartNode SN4332/JO/48 IpChannelBank Analog VoIP Gateway | 32 FXO ports

SKU: 4391 Category:





The SmartNode™  SN4332/JO/48 VoIP Gateway provides 32 analog FXO interfaces to connect phones, fax or PSTN trunk lines to your IP-based communications (IP PBX, UC systems and SIP Trunks). The  SN4332/JO/48 is a member of the SN4300 product series.

Like every SmartNode™, the SN4332/JO/48 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, H.323, 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 provides PSTN fallback to ensure business continuity in case the IP network fails. 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 SN4332/JO/48 VoIP Gateway. Providing 32 FXO interfaces and one 10/100/1000 Ethernet, the  SN4332/JO/48 delivers a reliable, cost-effective solution for the Enterprise.















Additional information

Weight 2.00 lbs
Dimensions 5.00 × 5.00 × 5.00 in


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  • 32 FXO—Simultaneous voice or fax calls on all ports. Advanced local call switching.
  • Full SIP and T.38 support—Supports the complete range of industry standard VoIP: SIP, H.323, T.38 fax, fax and modem bypass, DTMF relay. Codecs G.729, G.723 etc.
  • Outstanding Interoperability—Interoperable for voice and T.38 fax with leading SIP service providers, soft-switch vendors and Asterisk™ IP-PBX


Call Capacity  16 simultaneous G.722/G.711 or T.38 fax calls
Voice Signaling

SIPv2 and SIPv2 over TLS**

SIP over IPv6
SIP call transfer, redirect
Overlap or en-bloc dialing
DTMF in-band, out-of-band

Call Routing & Services Regular expression number matching
Regular expression number manipulation
Least Cost Routing
Number blocking
Digit collection
Distribution-Groups and Hunt-Groups
FXO Connectivity

2-wire Loopstart on RJ-11/12

32 FXO ports

Programmable impedance 

Ring detection, tone detection

Caller ID detection (FXS, DTMF) 

Disconnect supervision

ISDN 2 or 4 BRI S0/T0 ports, RJ-45 

NT/TE configurable per port

Built-in line power on each port (total 4W) 

DSS1, Q.921, Q.931. NTT-64 

HP High Precision Clock Stratum 3 CO
Point-point and point-multipoint
Lifeline Bypass Relay
Optional QSIG support**

Voice Processing G.722
G.723.1 (6.4 kbps)
G.729, 729a, 729ab (8 kbps)

G.726 (16, 24, 32, 40 Kbps)

AMR-NB (4.75, 5.15, 5.9, 6.7, 7.4, 7.95, 10.2, 12.2kbps)
iLBC at 13.33 & 15.2 kbps

G.168-2004 echo cancellation (128 ms)

16 simultaneous low-bandwidth voice or T.38 fax calls 

16 HD calls with SRTP

Up to 200 SIP to SIP calls***

2 to 8 transcoded calls**
Transparent ISDN data (RFC 4040)
Silence suppression and comfort noise
Adaptive and configurable dejitter buffer
Configurable RTP packet length

Quality of Service PacketSmart Network Assessment & Monitoring***
Voice priority, DownStreamQoS
Traffic Management, shaping policing
IEEE 802.1p, IEEE 802.1Q, 4096 VLANs (Tag insertion/deletion), TOS, DiffServ Labeling
Connectivity One or two 10/100/1000Base-T Ethernet ports


USB 2.0 host port (/2ETH port version only) 

DHCP Client
PPPoE Client (multi-session)
IP Multi-Netting, VLAN, Secondary IP
Dual Stack IPv4 & IPv6
Dynamic and static NAT and NAPT
ACL, Stateful Firewall
DHCP Server
SNTP Client


Web/HTTPS, CLI with Telnet and SSH access

WebWizard support

Patton Cloud Management

TR-069, TFTP, HTTP, HTTPS configuration & firmware up- and download

TR-069 configuration and firmware provisioning
SNMPv3 agent
Separate config domain
MIB II and private MIB
Built-in diagnostic tools
Secure Auto-Provisioning with built in root CA


Power Consumption < 10W


Metal: Rack mount option


19-in. rack-mount chassis 48.3W x 4.44H x 30.50D cm


4.1 kg 

Environment Operating temperature: 32 104F (0 40C)
Operating humidity: up to 90%, non-condensing

*FCC Part 15 Class A (US EMC)
*CE per RTTE 99/5/EC (EMC and LVD)



Ordering Information

# Model # Description Availability
  SN4332/JO/48 SmartNode Multiport FXO VoIP GW, 32 FXO ports presented on RJ21, 1x Fast Ethernet, Internal 48VDC Power General Availability