™ Media Gateway Mediant 8000™ Product Description Version 6.6 Document # LTRT-92323 Product Description Contents Contents 1 Introduction ....................................................................................................... 15 1.1 General Features ..................................................................................... 15 1.2 PSTN Signaling Features ........................................................................ 16 1.3 3GPP Functionality .................................................................................. 16 1.4 Cable Functionality (PacketCable 1.0) ................................................... 17 1.5 System Management Functionality ........................................................ 17 1.6 Hardware Platform Functionality ........................................................... 18 1.7 Performance Highlights .......................................................................... 19 2 Mediant 8000 Basic Feature Highlights ........................................................... 21 2.1 Voice Packet Processing ........................................................................ 21 2.1.1 Echo Cancelation ................................................................................... 21 2.1.2 Voice and Tone Signaling Discrimination ............................................... 22 2.1.3 Capacity and Voice Compression ........................................................... 22 2.1.4 Voice Activity Detection and Comfort Noise Generation ......................... 23 2.1.5 Voice, Data and Fax Discrimination ........................................................ 23 2.1.6 Tone Processing .................................................................................... 23 2.1.7 AMR Coder Policy .................................................................................. 23 2.1.8 Flexible Combinations of DSP Templates............................................... 24 2.2 Gateway Management ............................................................................. 24 2.3 Performance Management ...................................................................... 28 2.3.1 Performance Monitoring Threshold Alarms ............................................. 29 2.3.2 EMS Data Collector and Reduction Functions ........................................ 29 2.4 High Availability ....................................................................................... 30 2.4.1 System Controller (SC) Boards (Active/Standby Configuration) .............. 30 2.4.2 Alarm (SA) Boards (Active/Standby Configuration) ................................. 30 2.4.3 Ethernet Switch Boards (Active/Standby Configuration) ......................... 31 2.4.4 Ethernet Uplink Redundancy .................................................................. 31 2.4.5 Media Gateway Boards (N+1 Configuration) ......................................... 32 2.4.5.1 SS7 Point Code Sharing ......................................................................32 2.4.5.2 PSTN and IP to IP Applications Activation via Boards’ License Key ..33 2.4.6 Power Supply Modules (Load sharing N:1 Configuration) ....................... 33 2.4.7 Cooling Fans (Load sharing N:1 Configuration) ...................................... 33 2.4.8 Multi-Redundancy Groups Procedures ................................................... 34 2.4.9 Carrier Grade Alarm System .................................................................. 34 2.4.9.1 Alarm Throttling ...................................................................................35 2.5 Clock Synchronization Modes ................................................................ 35 2.5.1 Standalone Sync Clock Mode ................................................................. 36 2.5.2 Timing Module BITS Sync Clock Mode .................................................. 37 2.5.3 Timing Module Line Sync Clock Mode .................................................... 38 2.6 Security .................................................................................................... 39 2.6.1 Media Gateway Threats ......................................................................... 39 2.6.2 Mediant 8000 Security Features ............................................................. 40 2.6.2.1 OS Hardening ......................................................................................41 2.6.2.2 File System Integrity Check .................................................................41 2.6.2.3 Denial-of-service (DoS) Attacks Protection .........................................42 2.6.2.4 Auditing on Mediant 8000 Media Gateway ..........................................42 Version 6.6 3 July 2014 Mediant 8000 Contents 2.6.2.5 CLI Interface Access Control ...............................................................42 2.6.2.6 Intrusion Detection Events ...................................................................45 2.6.2.7 Configuration Freeze and Configuration Change Event......................45 2.6.3 Mediant 8000 Security Technology ........................................................ 46 2.6.3.1 IPSec and IKE .....................................................................................46 2.6.3.2 SNMPv3 ...............................................................................................47 2.6.3.3 Firewall.................................................................................................47 2.6.3.4 SSH ......................................................................................................48 2.6.3.5 SSL/TLS ..............................................................................................48 2.6.3.6 X.509 Certificates ................................................................................48 2.6.3.7 RTP Media Encryption – RFC 3711 Secured RTP or ARIA (Korean standard) ..............................................................................................51 2.6.3.8 ARIA Encryption Algorithm for SRTP ..................................................52 2.7 Network Time Protocol (NTP) Synchronization .................................... 52 2.7.1 NTP Synchronization and Status ............................................................ 53 2.7.2 Internal NTP Implementation .................................................................. 53 2.8 Remote Online Software Upgrade .......................................................... 55 2.8.1 Hitless Upgrade Mode ............................................................................ 55 2.8.2 Graceful Shutdown Mode ....................................................................... 55 2.9 Session Border Controller (SBC) Application ....................................... 56 2.9.1 Support for LAN and WAN Physical Interface Separation ....................... 56 2.9.2 NAT Traversal ........................................................................................ 56 2.9.3 VoIP Firewall .......................................................................................... 57 2.9.4 Topology Hiding ..................................................................................... 57 2.9.5 SIP Normalization ................................................................................... 57 2.9.6 SIP Dialog Initiation Process .................................................................. 58 2.9.7 User Registration and Internal Database ................................................ 58 2.9.7.1 Registration Restriction Control ...........................................................58 2.9.8 SBC Media Handling .............................................................................. 59 2.9.8.1 SRTP-RTP Interworking ......................................................................60 2.9.9 SIP Dialog Admission Control ................................................................. 60 2.9.10 SBC Conditions ...................................................................................... 60 2.9.11 Advanced CAC Reserved Number of Calls per Customer ...................... 60 2.9.12 Support for User Registration Time per IP Profile ................................... 61 2.9.13 Media (RTP) Normalization .................................................................... 61 2.10 Call Forking .............................................................................................. 61 2.10.1 SIP Call Forking ..................................................................................... 61 2.10.2 Support for SIP Forking by SIP Proxy Server ......................................... 62 2.10.3 Tel to IP Forking Group .......................................................................... 62 2.11 IP-to-IP Routing Application ................................................................... 62 2.11.1 Theory of Operation ............................................................................... 63 2.12 IP to IP Interconnect Border Gateway Function (I-BGF) ...................... 64 2.13 Message Manipulation ............................................................................ 65 2.13.1 SBC Message Manipulation ................................................................... 65 2.14 Support Stand-Alone Survivability (SAS) .............................................. 66 2.15 SIP Emergency Gateway ......................................................................... 66 2.16 NAT Translation ......................................................................................