"The Mediant 3000's carrier-grade design delivers high availability through its 1+1 redundant architecture. The platform connects any SIP to SIP environments and IP-PBXs to any SIP trunking service provider, scaling to 1008 concurrent VoIP sessions."
Redundant pair of Mediant 4000 Enterprise Session Border Controller (SBC) - with 0 sessions (bare bones) supporting SW upgrade up to 5000 SBC sessions. Includes a pair of M4K chassis with dual power supply, AMC module with 1 CPU AMC sub module, 2 networking AMC sub modules with 4 x redundant 1000Base-T GE copper interface and 2 DSP AMC sub modules with 2xDSPs. - M4K11/BASE/RED/AC
Image, Data Sheet & Marketing Description may differ from the actual product of part# M4K11/BASE/RED/AC