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C o m m u n i c a t i o n s , I n c .
● Call Forwarding – Unconditional, No Answer, On Busy
● Auto-Answer
● Do-Not-Disturb
● Configurable Dial Plan Support
● Phone Book with 100 entries
● Speed Dialing Support (10 entries)
● Call History: Missed, Answered, Dialed Numbers with call time (10
each)
● Adjustable volume for handset, ring volume and speaker etc.
● Hot Line Calling
2.3. Standard and Protocol
● SIP (RFC2543; RFC3261;RFC3262 ; RFC2976 ; RFC3264 ; RFC3311 ;
RFC3515 ; RFC3666 ; RFC3420 )
● IEEE 802.3 /802.3 u 10 Base T / 100Base TX
●Support for Layer3 Qos(Diff-Serv) and Layer 2 Qos (802.1P/Q)
● PPPoE: PPP over Ethernet
● TCP/IP: Transmission Control Protocol / Internet Protocol
● ARP: Address Resolution Protocol
● ICMP: Internet Control Message Protocol
● RTP: Real-time Transport Protocol
● RTCP：Real-time Transport Control Protocol
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