8820IP Phone User Manual_ SIP (V1.44)
6
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CNG (Comfort noise generation)
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Dynamic voice jitter buffer
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G.167/165 compliant 16ms echo cancellation
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Tone generation and Local DTMF re-generation according with ITU-T
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Support the Inband audio; RFC2833; SIP INFO etc DTMF transmission
method
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E.164 dial plan and customized dial rules
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100 entries for speed dial
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80 entries each for missed calls, answered calls and dialed calls
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Adjustable volume for both handset and speaker
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Voice prompt
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Hotline
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Support adjustable user password and super password
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Standard and Protocol
PA168X SIP Phone supports following standard and protocol:
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IEEE 802.3 /802.3 u 10 Base T / 100Base TX
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Major G.7XX; GSM610;iLBC audio codec
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SIP RFC3261
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TCP/IP: Internet transfer and control protocol
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RTP: Real-time Transport Protocol
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RTCP
:
Real-time Control Protocol