Session Border Controller

The SVI-SBC Session Border Controller polices real-time multimedia traffic between IP network borders ensuring your private network is robustly secure and fully manageable. Built to protect & simplify your IP core while ensuring consistent network availability.

Overview

Functionality

Specifications

Delivery

VoIP Protocols

SIP	RFC 3261 Session Initiate Protocol
	RFC 2976 SIP INFO Method
	RFC 3398 ISUP-SIP Mapping
	RFC 3515 Refer Method
	RFC 3578 Overlap
	RFC 2327 Session Description Protocol
	RFC 3581 An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing
	RFC 3665 Session Initiation Protocol (SIP) Basic Call Flow Examples
	RFC 3666 Public Switched Telephone Network (PSTN) Call Flows
	RFC 3892 Referred-By Mechanism
	RFC 3891 "Replaces" Header
SIP-T	RFC 3372 Session Initiation Protocol for Telephones (SIP-T)
SIP-I	ITU Q.1912 for ISUP/C7-to-SIP inter working
H.323	ITU Version 2 and 4
	Fast and Slow Start
	Gateway and Gatekeeper interconnect
BICC	ITU-T Q.1901 for SIP-BICC interworking

VoIP Media

Voice Transcoding Support	G711a, G711µ, G723, G723.1, G729, G726, GSM FR, AMR, iLBC
	High Bandwidth > Low Bandwidth
	Low Bandwidth > Low Bandwidth

SIP H.323 Performance Benchmarks

Server CPU	Pentium 3.0 GHz
Server RAM	2 GB RAM
Server Form Factor	PCI
Message Flow	SIP-I->SIP H.323->SIP	SIP->H.323 SIP<->SIP
BHCA	720,000	1,440,000
Call Attempts per sec	200s	400s
% CPU Usage	Avg 25%	Avg 80%
Call Completion Rate	99.9998%	99.9998%
Simultaneous Calls Supported	10,000	10,000

Firewall Traversal Capabilities

NAT/PAT Translation	Allows for public to private address translation.
Network Topology Hiding	Allowing VoIP endpoint IP addresses to be hidden from their IP destination.