Overview
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SmartNode 4660 & 4670 User Manual
1 • General information
Overview
The SmartNode 4660 VoIP Gateway-Router and SmartNode 4670 VoIP IAD offer flexible combinations of
ISDN BRI, analog FXS/FXO, and Ethernet/IP interfaces to deliver a unique solution allowing the Enterprise
to IP-enable legacy ISDN-PBX and analog phone/fax/answering machine and audio-intercom systems. The
SN4670 model also includes a G.SHDSL or ADSL interface for broadband access to deliver a single-box CPE
solution.
Providing 4 Ethernet, 2 to 8 BRI, 4 to 8 FXS, and up to 4 FXO ports, the SN4660 and SN4670 inter-connect
any Ethernet switch, ISDN PBX, analog equipment or IP-data network to support 8 to 24 simultaneous VoIP
calls using SIP, FXS/FXO or BRI signaling. The 10/100 Ethernet uplink provides seamless WAN access via
any existing cable, ADSL, VDSL, EFM, or fiber-optic modem. Additionally, the SN4670 model’s built-in 4-
wire G.SHDSL (11.4 Mbps) or ADSL (up to 24 Mbps) interface provides seamless WAN access.
Figure 1. SmartNode 4660 (left) and SmartNode 4670 (right)
Like every SmartNode, the SN4660 and SN4670 support every industry-standard CODEC to deliver toll-
quality voice on every call. Adding session border controller capabilities, the SmartNodes include IP transcod-
ing for up to 12 SIP channels. 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 encryp-
tion provides secure voice and data via IPsec with AES/DES strong encryption and automated keying via Inter-
net Key Exchange (IKE). In addition, advanced call-router functionality includes least-cost call routing with
flexible dialed-number plan support.
The SmartNode survivability suite combines PSTN fallback, SIP Registrar and IP-link redundancy to ensure
business continuity if the IP network fails. Patton’s DownStreamQoS delivers the advantage of clear, uninter-
rupted voice-and-data communication. Furthermore, SmartNode’s unique high-precision clock delivers first-
line IP telephony service in demanding ISDN and DECT environments with reliable FAX and modem perfor-
mance. 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.