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Voice Features >>
• G.711 a /μ-law with G.723.1, G.726,
G.729A or GSM FR6.10
• Silence Suppression & Detection
• Comfort Noise Generation (CNG)
• Voice Activity Detection (VAD)
• Echo Cancellation (G.165/G.168)
• Adaptive (Dynamic) Jitter Buffer
• Call Progress Tone Generation
• Programmable Gain Control
SIP Method Support
>>
ACK, BYE, CANCEL, INFO, INVITE, MESSAGE,
NOTIFY, OPTIONS, PING, PRACK, PUBLISH,
REFER, REGISTER, SUBSCRIBE, UPDATE,
REFER, REGISTER, SUBSCRIBE, UPDATE
SIP Call Features >>
• Peer to Peer Call
• Call Hold / Retrieve
• Call Waiting
• Call Pick Up
• Call Park / Retrieve (SIP Server
Required)
• Call Forward
• Call Transfer
• Speed Dialing
• Repeat Dialing
• Three-way Calling (Media Server
Required)
Telephony
Specifications >>
• In-Band DTMF, Out-of-Band DTMF Relay
(RFC2833) or SIP INFO
• DTMF / PULSE Dial Support
• Caller ID Generation / Detection:
DTMF
FSK-Bellcore Type 1 & 2
FSK-ETSI Type 1 & 2
Calling Name, Number, Date and Time (FSK)
• Polarity Reversal Detection (FXO) and
Generation (FXS)
• T.30 FAX Bypass to G.711, T.38 Real
Time FAX Relay
• Failsafe mechanism: Network, Service,
Power Failure (FXS relay to FXO / PSTN)
• Recordable Greeting Message (FXO
models)
• Emergency Number Table (FXO / PSTN
models)
• Modem Over IP Up to 14,400bps
• Message Waiting Indication (SIP
Notice)
• Hot line; Warm Line Support
• Receiver Off-Hook (ROH Tone @ 480 Hz)
• Loop Current Suppression after Busy
Tone (configurable)
• Visual Message Waiting Indication (VMWI)
SIP Account Management >>
• By port registration
• By device registration (share account)
• Mixed mode (Hunt number for inbound,
by port number for outbound)
• Invite with Challenge
• Register by SIP Server IP Address or
Domain Name
• Support RFC3986 SIP URI format
SIP Call
Management >>
• Outbound Proxy Support
• SIP Proxy Server Registration Failover
• Privacy Mechanism / Private Extensions
to SIP
• Session Timers (Update / Re-invite)
• DNS SRV Support
• Call Types: Voice / Modem / FAX
• Call Routing by Prefix Number
• User Programmable Dial Plan Support
• Toll-Free Support (FXO / PSTN models)
• Automatic Calling Number Manipulation
(VoIP, PSTN)
• CDR Client
• Phone Book Manager & Manual Peer Table
(for P2P calls)
• E.164 Numbering, ENUM support
• Symmetric RTP |
