Session border controller SBC-1000

  • Up to 500 simultaneous calls
  • Business process security
  • Efficient management
  • Hardware redundancy

Session border controller
Eltex SBC is an element of VoIP network that process as session border controller. The device provides signal protocol normalization, statistics collection and network protection against unauthorized access and attacks.    

Eltex SBC is deployed at the border of the IP networks: 
  • between service providers’ networks;
  • between service provider network and Client’s corporate network;
  • between service provider network and a public network.
  • Ensuring of the security for service provider networks
  • Public IP addresses translation1
  • Flexible distribution of the redundancy routes
  • Extended Firewall settings
  • Statistics gathering
  • Media streams transcoding1
  • Alarm log
  • Linear scaling1
  • Control of access to RADIUS
  • Operation with subscribers behind NAT
  • SDP analysis and verification
  • end-to-end SLA1
  • Fail2ban security mechanism
  • RTCP control
  • RTP sessions management
  • Efficient management
  • Black and white lists
  • Quality of Service (QoS)1
  • Integration with Eltex.EMS
  • Signaling protocol conversion1
  • Load balancing between trunks
  • Trunks with registration
  • Flexible calls distribution according to established rules
  • 1+1 redundancy 
Signaling protocols

  • SIP, SIP-T/I

SIP functionality

  • SIP L5 NAT/Topology hiding
  • SIP dialogue transparency
  • SIP RFC-3326 Reason w/Cause
  • SIP transit of unrecognized headers1
  • B2BUA as defined in RFC-3261
  • RFC-2833 (Telephone Event)
  • RFC-3264 (Offer/Answer)
  • RFC-3204 (MIME Support)
  • RFC-4028 (Session Timers)
  • RFC-3326 (Reason Field)
  • SIP RFC-2833 relay
  • RFC-3262 (PRACK)
  • RFC-3372 (SIP-T)
  • B2BUA peering
  • B2BUA access
  • RFC-1889 (RTP)
  • RFC-4566 (SDP)
  • RFC-3261
  • RFC-3581
  • RFC-3515 (Refer Method)
  • RFC-3265 (Subscribe)

Media protocols

  • RTP and RTCP

Media modes

  • Flow-through
  • Flow-around1

Transport protocols

  • TCP
  • UDP
  • TCP/UDP interworking

Network protocols

  • LACP
  • IPv4
  • IPv61

Video codecs

  • H.263
  • H.263-1998
  • H.264


  • Up to 500 simultaneous calls 


  • Warm-standby 1+1 redundancy
  • Automatic switching to a backup
  • Automatic synchronization of primary and backup equipment settings


  • Up to 40 VLAN 
  • VPN (L2TP, PPTP)
  • Rogue RTP detection
  • Toll-free, fraud protection1
  • Protection against DoS - SIP/ICMP flood
  • DDoS1
  • Protection against overloading, based on registration
  • IP address filtering according to geographic criterion

Fax transmission

  • T.38
  • G.711

Voice codecs

  • G.711 (a-law, µ-law), G.729, G.729 (A/B), G.723.1, G.722, G.728, G.726

Quality of Service  (QoS)

  • IP priority mechanism1
  • Differentiated Services Code Point (DSCP) marking1



  • 2 x 1000Base-X ports (2 slots for SFP modules)
  • 3 x 10/100/1000Base-T (RJ-45) ports

USB port, 2 e-SATA ports

  • Alarm logging
  • Billing data recording

Statistics of connections

  • CDR files are kept on the SATA storage
  • CDR files are stored on the remote FTP server
  • Transmission of data on connections via AAA protocol1


The following management means provides access right differentiation:

  • MML console (SSH/Telnet)
  • Web interface
  • Monitoring and editing of active registration list
  • Possibility of integration with Eltex.EMS (SNMP)
¹  Not supported in the current firmware version 1.8.0