Capacities
Max Signaling                       60(from 30 to 60)
Max. RTP/SRTP Sessions       120(from 30 to 60)
Max. Transcoding Sessions   120(from 30 to 60)
Max. Registered Users           500(upgradeable to 1000)

Telephony Interfaces
Analog                      Optional
Digital                       Up to 2E1/T1 Interfaces
Clock Source                50 ppm High Precision
Digital PSTN Protocols: ISDN: ISDN User Side, ISDN Network Side, SS1: SS1 Signaling; SIP signaling: SIP V1.0/2.0, RFC3261; SS7 MTP1~3,SS7 TCAP, SS7 ISUP, SIGTRAN, SS7 1+1 active/standby redundancy

Network Interfaces
Ethernet:                   2(10/100 BASE-TX (RJ-45)) & Customizable


Security
Access Control:                         DoS/DDoS line rate protection, bandwidth throttling, dynamic blacklisting (Intrusion Detection System)
Encryption/Authentication:      TLS, SRTP, HTTPS, SSH, client/server SIP Digest authentication
Privacy:                                     Topology hiding, user privacy
Traffic Separation:                    Self-adjustable automatic load balance
Intrusion Detection System:     Detection and prevention of VoIP attacks, theft of service and unauthorized access
VoIP firewall:                             Optional

Interoperability
SIP B2BUA:    Full SIP transparency, mature and broadly deployed SIP stack, stateful proxy mode
SIP Interworking:     3xx redirect, REFER, PRACK, early media, call hold
Registration and Authentication:     User registration restriction control, registration and authentication on behalf of users, SIP authentication server for SBC users
Transport Mediation:       Mediation between SIP over UDP/TCP/TLS, IPv4/IPv6, RTP/SRTP
Header Manipulation:      Add/modify/delete SIP headers and message body using simple WireShark-like language with powerful capabilities such as variables and utility functions
Number 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.729, GSM-FR, AMR-NB, SILK-NB/WB, Opus-NB/WB
Signal Conversion:     DTMF/RFC 2833/SIP, T.38 fax, T.38 V3, V.34, packet-time conversion
NAT:               Hosted NAT, RTP self-adaption
WebRTC controller:     Optional or customizable

Voice Quality and SLA
Call Admission Control:     Limit number and rate of concurrent sessions and registers per peer for inbound and outbound directions
Packet Marking:                 802.1p/Q VLAN tagging, DiffServ
Standalone Survivability:   Maintains local calls in the event of WAN failure. Outbound calls can use PSTN fallback (including E911).
Impairment Mitigation:     Dynamic Programmable Jitter Buffer, Silence Suppression/Comfort Noise Generation
Voice Monitoring and Enhancement:   acoustic echo cancellation, fixed and dynamic voice gain control, dynamic programmable jitter buffer, silence suppression, RTP redundancy, broken connection detection
Direct Media:                     Hair-pinning (no media anchoring) of local calls to avoid unnecessary media delays and bandwidth consumption
High Availability:                SBC high availability with 1+1 redundancy, active calls preserved
Test Agent:                         Ability to remotely verify SIP message flow between SIP UAs
Echo cancellation:               G.168 128 ms tail length
Advanced Media Processing:       T.38 real-time fax, T.38 – G.711 interworking


SIP Routing
Routing Criteria:    Incoming SIP trunk, DID ranges, host names, any SIP headers, codecs, QoE, bandwidth
Route To:               Configured SIP peers, registered users, IP address, request URI
Advanced Routing Features:   Alternative routes, load balancing, least-cost routing, call forking, E911 emergency call detection and prioritization
SIPREC:                  SynAPI recording interface

Management
OAM&P:                Browser-based GUI, SNMP, INI Configuration file


Physical/Environmental
Dimensions:          190*30*120mm
Weight:                 About 0.7Kg
Mounting:             Desktop
Power:                   100-240V AC
Environmental:      Operating temperature: 0℃—40℃;Storage temperature: -20℃—85℃
                              Humidity: 8%— 90% non-condensing; Storage humidity: 8%— 90% non-condensing