4750: EdgeMarc 30
  Enterprise Session Border Controller - 8LAN, 2WAN:  The EdgeMarc 4750 delivers superior performance for multiple 
simultaneous services including voice voice quality monitoring traffic 
management high capacity data throughput and firewall.  It is the ideal 
solution for small and medium business and service provider managed 
services such as SIP trunking and hosted IP telephony. - Supports 15 - 
300 concurrent calls at a 100 Mbps data rate 
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