Specifications
Protocol for Signaling	SIP (RFC3261 Standard)
Protocol for Delivery of Media	RTP, RTCP (When using NAT Traversal)
Transport Protocol	TCP, UDP
Routing Methods	Register database, Dial Plan, B2BUA
NAT Traversal	Proprietary method, UPnP
Maximum Number of Concurrent Sessions	Unlimited
Administration	Web-based Administration

System Requirements
OS	Microsoft Windows, Linux, Mac OSX, Solaris
Java	Sun Microsystems JDK 1.6 or later (32bit)
Memory	256 MB Minimum

*Note: Apache Tomcat (v.5.5.12 or later) is required for operating systems other than Windows.