User's Manual 1192 Document #: LTRT-27045
Mediant 1000B Gateway & E-SBC
Function Specification
Intrusion Detection System
Detection and prevention of VoIP attacks, theft of service and
unauthorized access
Interoperability
SIP B2BUA
Full SIP transparency, mature & broadly deployed SIP stack, stateful
proxy mode
SIP Interworking
3xx redirect, REFER, PRACK, session timer, early media, call hold,
delayed offer
Registration and
Authentication
User r
egistration restriction control, registration and authentication on
behalf of users, SIP authentication server for SBC users
Transport Mediation
SIP over UDP/TCP/TLS, IPv4-IPv6, RTP-SRTP (SDES)
Message Manipulation
Ability to add/modify/delete SIP headers and message body using
advanced regular expressions (regex)
URI and Number
Manipulations
URI user and host name manipulations, ingress and egress digit
manipulation
Transcoding and Vocoders
Coder normalization including transcoding, coder enforcement and
re-prioritization, extensive vocoder support: G.711, G.723.1, G.726,
G.729, GSM-FR, AMR-NB, iLBC, QCELP, GSM EFR
Signal Conversion
DTMF/RFC 2833/SIP, T.38 fax, V.34, packet-time conversion
NAT
Local and far-end NAT traversal for support of remote workers
Voice Quality and SLA
Call Admission Control
Based on bandwidth, session establishment rate, number of
connections/registrations
Packet Marking
802.1p/Q VLAN tagging, DiffServ, TOS
Standalone Survivability
Maintain local calls in the event of WAN failure, outbound calls can
use PSTN fallback for external connectivity (including E911)
Impairment Mitigation
Packet Loss Concealment, Dynamic Programmable Jitter Buffer,
Silence Suppression/Comfort Noise Generation, RTP redundancy,
broken connection detection
Voice Enhancement
Transrating, RTCP-XR, acoustic echo cancellation, replacing voice
profile due to impairment detection, fixed and dynamic voice gain
control
Direct Media (No Media
Anchoring)
Hair-pinning of local calls to avoid unnecessary media delays and
bandwidth consumption
Voice Quality Monitoring
RTCP-XR, AudioCodes Session Experience Manager (SEM)
Quality of Experience
Access control and media quality enhancements based on QoE and
bandwidth utilization
Test Agent
Ability to remotely verify connectivity, voice quality and SIP message
flow between SIP UAs
SIP Routing
Routing Methods
Request URL, IP Address, FQDN, ENUM, advanced LDAP, third-
party routing control through REST API
Advanced Routing Criteria
QoE, bandwidth, SIP message (SIP request, coder type, etc.), Layer-
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