User`s manual

DVG-5121SP User’s Manual
D-Link Corporation
7
Voice
Pond Key
SIPv2 compliance
SIP Methods: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS,
PING, PRACK, REFER, REGISTER, SUBSCRIBE, UPDATE
SIP Extension: Session Timer, Proxy-Require,
P-Asserted, MWI
Voice Compression: G.711 a/u-law, G.726, G.729A/B, G.723.1
CNG and VAD
Silence suppression and detection
168 Echo Cancellation
Adaptive jitter buffer
Programmable gain control
In-band DTMF
Out-of-band DTMF relay: RFC2833
DTMF
Termination Impedance: 600/900 and complex Impedance
Failover SIP Proxy server registrations
Failsafe Mechanism (FXS relay to PSTN):
Network failure
Service unavailable
Power loss
T.30 FAX pass through, T.38 real time FAX relay
Caller ID: DTMF, FSK-Bellcore
Call Hunting support
Phone book
E.164 numbering
Hot line
Call features:
Call Hold, Call Waiting, Call Pickup
Call Forward - Unconditional, Busy, No Answer
Call Transfer - Unattended, Attended
Speed Dialing, Repeat Dialing, Three Way Calling (Media Server required)
Digit Maps