Verbex IP PABX system 500 SIP users and 30 concurrent calls
Physical Interface
l FXS: 2 *FXS Ports
l FXO: 2 * FXO Ports
l USB Interface:  1* USB2.0
l Ethernet Interfaces
1 WAN, 100/1000M, Base-T, RJ45
1 LAN, Â 100/1000M, Base-T, RJ45
l 1*SD card slot
l 1* Console port
l LED Indicators: PSTN Line, FXS, USB,SD,PWR/RUN
FXS
l Connector: RJ11
l Caller ID: Bellcore Type 1&2, ETSI,BT,NTT and DTMF
l Answer and Disconnect Signaling: Answer, Disconnect, Busy Tone
l Polarity Reversal
l Hook Flash
FXO
l Connector: RJ11
l Caller ID: FSK, DTMF
l Polarity Reversal
l Answer Delay
l Detection of Busy Tone
l Detection of No Current
l Auto Match of FXO Impedance
Voice Capabilities
l VoIP Protocols: SIP over UDP/TCP/TLS,RTP/SRTP
l Codecs: G.711a/μ law,G.723.1, G.729A/B
l Silence Suppression
l Comfort Noise Generator(CNG)
l Voice Activity Detection(VAD)
l Echo Cancellation: G.168 with up to 128ms
l Dynamic Jitter Buffer
l Adjustable Gain Control
l Automatic Gain Control （AGC）
l Call Progress Tones: Dial Tone, Ring Back Tone, Busy Tone
l FAX: T.38 and Pass-through
l NAT: STUN/UPnP
l DTMF: RFC2833/Signal/Inband
l VPN Server/Client
PBX Services
l Call Forward (Unconditional/No Answer/Busy)
l Call Waiting
l Call Holding
l Call Transfer
l Hotline
l Do-not-disturb
l 3-Way Conference
l Ring Group
l Call Queue
l Routing Groups
l Caller/Called Number Manipulation
l Routing Based on Time Period
l Routing Based on Caller/Called Prefixes
l Routing Based on Source Trunks
l Dial Rules
l Failover Routing
l Multi-level IVR
l Auto-attendant Function
l CDRs
l Voicemail
l Local Recording (Support USB Storage)
l Up to 500 SIP Extensions
l Up to 30 Concurrent Calls
l Paging
l Event Report
l Email Client
l Voicemail to Email
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