SmartNode 4900 Series overview 16SmartNode 4900 User Manual 1 • General informationSmartNode 4900 Series overviewThe IpChannel Bank 4900 Series are Analog Access Routers that support 12 to 32 VoIP calls. Filling the gapbetween small media gateways and T1/E1 gateway equipment, the SN4900 Series IpChannel Bank fits yourneeds cost effectively—so you won’t have to “stack” multiple smaller units or buy an over-designed product.Figure 1. Model SN4932 IpChannel BankThe following base models are available:• IpChannel Bank 4912 (12 VoIP calls)• IpChannel Bank 4916 (16 VoIP calls)• IpChannel Bank 4924 (24 VoIP calls)• IpChannel Bank 4932 (32 VoIP calls)Refer to appendix B, “Specifications” on page 55 for a complete feature description of the SN4900 Series.The SmartNode 4900 Series comes equipped with two 10/100Base-T Ethernet ports, from 12 to 32 FXSports, and an integrated optional V.35 or X.21 serial-WAN port. This provides voice-over-IP (VoIP) andInternet telephony integrated with routed serial-WAN access. The SN4900 IpChannel Bank supports Frame-Relay and PPP networking with VPN and firewall functions and provides extensive quality of service (QoS)features for best-possible voice quality over any broadband IP network.The SmartNode IpChannel Bank performs the following major functions:• Voice over IP and local switching via a combination of 12, 16, 24, or 32 analog phone ports (FXS).• Voice over IP and local switching via a combination of 12, 16, 24, or 32 analog ports (FXO) forSN4900/JO models.• Standards-compliant conversion between analog voice and digital VoIP in accordance with SIP andH.323 protocols.• Internet access and IP Routing with IP QoS support for mixed voice and data traffic.• Routed LAN-to-WAN connectivity between two 10/100 Ethernet LAN ports and a synchronous serialV.35 or X.21 WAN interface.