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AudioCodes Mediant 4000B GTPM00894 M4KB/ESBC/Base/AC Session Board Controller


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AudioCodes Mediant 4000B GTPM00894 M4KB/ESBC/Base/AC Session Board Controller VoIP Gateway

Item is Used with Normal Wear and Tear, Tested and Working.

Comes with Rack Ears and Power Cords Only.


The AudioCodes Mediant 4000 is a session border controller (SBC) designed for deployment in large organizations and as an access SBC for service providers.

Supporting up to 5,000 concurrent sessions, the Mediant 4000 supports extensive SIP connectivity with wide-ranging interoperability, enhanced perimeter defense against DoS attacks, and advanced voice quality monitoring.

  • Supports a wide variety of qualified SIP trunks and SIP platforms
  • A highly integrated device for secured SIP trunking, forming a single and managed point of demarcation for VoIP networks
  • High-availability 1:1 active-standby configuration ensures business continuity
  • Scalable to 5,000 SBC sessions
  • Extensive SIP mediation capabilities
  • Supports remote workers and mobile SIP clients
  • Perimeter defense against denial of service, fraud and eavesdropping
  • VoIP quality monitoring and enforcement
  • Branch survivability during WAN failure
  • Active/Standby High Availability
  • Advanced media handling including transcoding and wideband speech
  • Max. SBC Sessions: 5000 (RTP-RTP or SRTP-SRTP) ; 3000 (RTP-SRTP)
  • Max. Transcoding Sessions: 5,000
  • Max. Registered Users: 20,000
  • LAN Interfaces: 8 x 100/1000 Base-T Ethernet ports for physical separation between multiple LAN and WAN between Media, Control and OA&M
  • Supported DSP Capabilities: Coder normalization including transcoding, coder enforcement and re-prioritization, IBS, Echo-Cancellation (EC), Silence Suppression/Comfort Noise Generation, VAD, CNG, fax-detection, T.38, RTCP XR, G.711, G.723.1, G.726, G.729, GSM-FR, iLBC, AMR-NB/WB, SILK-NB/WB, Opus-NB/WB
  • Physical Dimensions: 1U x 19” (444mm) x 14” (355mm) (HxWxD) or 1U x 19” (444mm) x 14.9” (378mm) (HxWxD)
  • Powering: Dual redundant 100-240V AC power supply


Condition Description An item that has been restored to working order by the eBay seller or a third party not approved by the manufacturer. This means the item has been inspected, cleaned, and repaired to full working order and is in excellent working condition. This item may have cosmetic blemishes and may or may not be in original packaging. See the listing description for full details.