User manual

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